Java Profiler List: 3 different types and why you need all of them

Debugging performance problems in production can be a pain and, in some cases, impossible without the right tools. The Java profile creators have been around for a while, but the profile creators that most developers think are just one type.

Let’s dive into the 3 different types of Java profiles:

1. Standard JVM profiles that track all the details of the JVM (CPU, chaining, memory, garbage collection, etc.).
2. Light profilers that emphasize its application with a little abstraction.
3. Application performance management (APM) tools used to monitor live applications in production environments.

Standard JVM profiles

Products such as VisualVM, JProfiler, YourKit and Java Mission Control.

A standard Java profiler certainly provides most of the data, but not necessarily the most useful information. This depends on the type of debugging task. These profiler will track all method calls and memory usage. This allows a developer to immerse themselves in the call structure at any angle they choose.

pros:

• Excellent for tracking memory leaks, standard profiles detail all memory usage by JVM and which classes / objects are responsible. The ability to manually run the garbage collection and then review the memory consumption can easily highlight the classes and processes that are retained in memory with error.
• Good for tracking CPU usage, a Java profile creator generally provides a CPU sampling resource to track and add CPU time per class and method to help focus on access points.

cons:

• Requires a direct connection to the monitored JVM; This ends up limiting the use to development environments in most cases. (Note: some profile creators can work with subprocess frames and memory in limited ways).
• slow down your application; Good processing power is necessary for the high level of detail provided.

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Lightweight transaction profiles in Java

Products such as XRebel and Stackify Prefix.

The creators of light profiles adopt a different approach when tracking their application, injecting themselves directly into the code.

• Aspect Profilers uses aspect-oriented programming (AOP) to inject code at the beginning and end of the specified methods. The injected code can start a stopwatch and report the elapsed time when the method is completed. These profiler are simple to configure, but you need to know what to create. For example, see Creating the profile of the Spring AOP method.
• Java Agent profile creators use the Java instrumentation API to inject code into their application. This method has greater access to your application, since the code is rewritten at the bytecode level. This allows any code that runs in your application to be instrumented – either the code you wrote or the third-party libraries that the application depends on. Check the introduction to the Java agents to see how everything works.

Aspect profilers are very easy to configure, but they are limited in what they can monitor and are overloaded by detailing everything you want to track. Java agents have a great advantage in their tracking depth, but they are much more complicated to write.

The Stackify Prefix is ​​a developer-oriented Java profile creator using the Java agent profile method behind the scenes. The interesting thing is that Prefix already knows the most desired classes, and developers of third-party libraries want to be instrumented. So you do not need to detail all of them. In addition, it takes all the instrumentation statistics and displays them in a simple and understandable way. For example, when running an application using Hibernate, the Prefix not only details the elapsed time for queries, but also displays parameter values ​​for the generated SQL. When your application calls a SOAP / REST API, the Prefix provides the content of the request and the response.

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Low Overload, Creating Java JVM Profile in Production (APM)

APM tools like New Relic, AppDynamics, Stackify Retrace, Dynatrace.

All profilers have been optimal for development so far, but monitoring how your system works in production is critical. Production is always a different landscape – the development and preparation configurations usually do not have the same data sets and load.

Java APM tools generally use the Java Agent profile creator method, but with different instrumentation rules to allow execution without affecting performance in productions. The trick with these proflets is to provide the correct information in a smart way so as not to occupy the CPU cycles.

Why are some Java profiles so expensive?

XRebel is a legal tool, but it costs US $ 365 per year. The Stackify Prefix is ​​free and provides much of the same functionality.

The biggest problem with APM solutions is definitely its price. Traditionally, they are so expensive that only the largest companies can deal with them. It does not make much sense to spend $ 100 a month on a server in Azure or AWS and spend another $ 200 a month for a product like the new relic.The monitoring tools should not cost more than the servers!

 

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The state of Java in 2018

2017 has been a turbulent year in the Java world. The long-awaited version of Java 9 brought many changes and interesting new features, and Oracle announced a new launch schedule for the JDK.

And that was just the beginning. In the past, developers often complained that Java was not developing fast enough. I do not think you will hear such complaints in the near future. It may be the opposite.

What is reserved for 2018

In 2018, the JDK will follow a new launch schedule. Instead of a huge release every few years, you will receive one less every six months. Then, after the release of Java 9 in September 2017, Java 10 is already planned for March 2018. But more about that later.

Overview of the business stack

Most corporate projects do not use the JDK alone. They also have a stack of corporate libraries, such as Spring Boot or Java EE, which will also evolve in the coming months. In this article, I will focus mainly on the JDK. But here is a quick overview of what you should expect from the two main stacks of business in the Java world.

The Spring development team is working hard on Spring Boot 2 and released the first release candidate in January. The team does not expect any major changes to the API and does not plan to add new features to the final version. Therefore, if you are using Spring Boot in your projects, it is time to take a closer look at the new version and plan the updates of your existing Spring Boot applications.

At the end of 2017, Oracle began delivering the Java EE specifications for the EE4J project managed by the Eclipse Foundation. As expected, this transfer is a big project that can not be completed in a few days. There is a lot of organizational and technical work that still needs to be done. Java EE needs a new name and development process. And the transfer of the source code and all the artifacts stored in different bug trackers is still underway. We will have to wait a little longer to see the effects of the transfer and the stronger participation of the community.

Short release and support cycles of JDK

As announced last year, Oracle will release two new versions of the JDK in 2018. Instead of the slow release cycle, in which every few years we produce a new release with many changes, we will now have a lower version every six months. This allows a faster innovation of the Java platform. It also reduces the associated risks of a Java update. For Java developers, these minor releases will also greatly facilitate the familiarization process with the latest changes and apply them to our projects.

I hope this is a very positive change for the Java world. It will add new dynamics to the development of the Java language and will allow the JDK team to adapt and innovate much more quickly.

Changes and new features in JDK 10

Due to the short launch cycle, Java 10 brings only a small set of changes. You can get an overview of the 12 JEP (proposal for improvement of the JDK) currently included in the JDK10 page of OpenJDK.

The most notable change is probably the support for inference of local variable types (JEP 286). But you should also know about the new release version based on time (JEP 322) and the full parallel support of the GC (garbage collector) added to the G1, or the Garbage First (JEP 307).

Release version based on time

Beginning with Java 10, the format of the Java version number is changed to improve support for a time-based release model.

The main challenge presented by the new launch model is that the content of a release is subject to change. The only thing defined at the beginning is the time when the new version will be released. If the development of a new feature takes longer than expected, it will not be cut to the next version and will not be included. Therefore, you need a version number that represents the passage of time instead of the nature of the changes included.

JEP 322 defines the format of the version number as $ FEATURE, $ INTERIM. $ UPDATE. $ PATCH and plan to use it in the following way:

• Every six months, the development team will publish a new resource version and increase the $ FEATURE part of the version number.
• The release published in March 2018 will be called JDK 10 and the September release of JDK 11. The development team declares in JEP 223 that they expect to send at least one to two significant resources at each resource launch.
• The $ INTERIM number is maintained for flexibility and will not be used in the currently planned 6-month accounting model. So, for now, it will always be 0.
• Updates will be released between resource postings and not include any incompatible changes. One month after the release of a resource and after every three months, the $ UPDATE part of the version number will be increased.

Complete GC parallel in G1

For most developers, this is one of the smallest changes. Depending on your application, you may not recognize it.

The G1 has become the standard garbage collector in JDK 9. Its design attempts to avoid complete garbage collections, but that does not mean they never occur. Unfortunately, the G1 uses only a single-threaded mark-sweep-compact algorithm to execute a complete collection. This can result in a decrease in performance compared to the parallel collector previously used.

JEP 307 addresses this problem by providing a multi-threaded implementation of the algorithm. Starting with JDK 10, you will use the same number of threads for complete collections, as applied to new and mixed collections.

Therefore, if your application forces the garbage collector to complete collections, the JDK 10 can improve its performance.

Plans for JDK 11

The JDK 10 has not yet been released, and there are only seven months left until the launch of JDK 11. So, it is not surprising that there is already a small set of PEC planned for the second release of the resource in 2018.

In addition to the removal of obsolete Java EE and CORBA modules (JEP 320) and a new garbage collector (JEP 318), JDK 11 will likely present dynamic class file constants (JEP 309) and support the keyword var implicitly. typified lambda expressions (JEP 323).

The current scope of JDK 11 shows the benefits of shorter launch cycles. JEP 309 and 318 introduce new functionality, while the other two JEPs use an iterative approach to develop existing resources.

With the launch of JDK 9 in September 2017, the Java EE and CORBA modules became obsolete. A year later, with the release of JDK 11, JEP 320 removes them from JDK. So, instead of keeping them for several years, they will be removed in a timely and predictable manner.

And JEP 323 is a logical next step after JEP 286 introduced type inference for local variables in JDK 10. You should expect to see this approach more frequently in the future. Short launch cycles make it much easier to send a huge resource in several logical stages distributed in one or more resource releases.

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Short support cycles require rapid adoption

Along with the new release model, Oracle also changed its support model. The new model differentiates between short and long-term launches.

Short-term versions, such as Java 9 and 10, will only receive public updates until the next release of resources is published. Thus, support for Java 9 ends in March 2018, and Java 10 will not receive public updates after September 2018.

Java 11 will be the first long-term release. Oracle wants to support these releases for a longer period. But so far, they have not announced how long they will provide public updates for Java 11.

As an application developer, you will have to decide if you want to update your Java version every six months or if you prefer a long-term release every few years. In addition, Oracle encourages everyone to migrate to the Java SE Advanced product. Includes  at least five years of support for all long-term releases.

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Summary

In the past, many developers complained about the slow evolution of the Java language. This will no longer be the case in 2018. The new 6-month launch cycle and adapted support model will impose faster updates on existing applications and introduce new features on a regular basis. In combination with the evolution of existing structures, such as Java EE or Spring, this will add a new dynamic to the Java world. And it will also require a change of mentality in all the companies that are used to update their applications every few years.

 

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Java vs. Python

While we all start learning to code with HTML, the development of a sophisticated application requires more advanced language. Java and Python are two of the most popular programming languages ​​currently on the market due to their versatility, efficiency and automation features. Both languages ​​have their merits and failures, but the main difference is that Java is statically written and Python is written dynamically.

They have similarities, since both adopt the design “everything is an object”, they have an optimal multiplatform support and use immutable chains and deep standard libraries. However, they have many differences that direct some coders for Java and others for Python. Java has always had a single large corporate sponsor, while Python is more distributed.

See how the two languages ​​are different and how to decide which of them best fits your goals.

Pros and cons

The phrase “dynamically typed” means that Python executes type checking at runtime, while statically typed languages ​​such as Java execute type verification at compile time. Python can compile even if it contains errors that prevent the correct execution of the script. On the other hand, when Java contains errors, it will not be compiled until the errors have been corrected.

Java also requires you to declare the data types of your variables before using them, whereas Python does not. Because it is statically written, it expects its variables to be declared before they can receive assigned values. Python is more flexible and can save time and space when executing scripts. However, this can cause problems at runtime.

Choosing a language is summarized to what you are trying to achieve with your code. Performance is not essential in the software at all times, but it is always worth taking into account. Java is more efficient when it comes to performance speed, thanks to its optimizations and execution of virtual machines.

You can add implementations in Python without this restriction, but they can negatively affect the portability assumptions within the Python code. Therefore, when it comes to absolute speed performance, Java has the advantage.

However, Python is more effective when it comes to adapting legacy systems. The language is more appropriate to make changes in an existing legacy system. Python can make gradual changes instead of rewriting and completely readjusting the system, as Java does.

Java in the corporate world is a more detailed coding style, which means that these systems are generally larger and more numerous than Python’s legacy. The last language is most common among the corporate code, which unites its IT infrastructure, making it more efficient in adapting legacy systems.

As far as practical agility is concerned, both languages ​​have their pros and cons. Recent advances in DevOps benefited both from the success of Java in a more consistent support of refactoring. This is due to the system of static language types, which makes the automated refactoring resource more predictable and reliable.

Meanwhile, the dynamic Python system is based on brevity, fluency and code experimentation, offering more versatility than the rigid Java style. Python is also adapting to automated testing in modern development, but this occurs more frequently in integration, rather than unit testing.

The choice of language depends on the needs of your company and the setbacks that you are willing to accept. While Java produces higher performance speeds, Python is more suitable for evolving legacy systems. When it comes to practical agility, Java is a more proven option, while Python has more flexibility for experimentation.

Is the future with Java or Python?

Both languages ​​have large communities around them and both are open source. This means that the coders are constantly correcting errors with languages ​​and updating them, making the two coding options viable for the future. The way things are, Java is the most popular programming language in the world, while Python is the top-five.

Java programmers have Java User Groups (JUG), which are some of the most popular coding communities in the world. They also have JavaOne, a high-profile programming event that shows no signs of slowing down. Meanwhile, Python has 1,637 user groups in 191 cities and 37 countries with more than 860,000 members. The language also has events, including PyCon and PyLadies for women to gather and code.

Learning one of the two languages ​​will help you get a job in computer science, but it is difficult to predict which trend will be more advanced in the future. There will always be encoders with different preferences, with Java attracting those who prefer a more direct language. Encoders who wish to have more coding flexibility, such as data scientists in a machine learning project, prefer Python.

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There are different works for each of these languages, but it is worth noting that Python may be progressing more than Java at the moment. Python tools, such as GREENLETS and GEVENT, allow asynchronous I / O functions with a programming style similar to segmentation. This means that the language can be written in twisted code without harming the brain of its users, counting the mounting code of stack exchange for the greenlets.

There is also Kivy, a Python tool that facilitates the creation of mobile applications. The language moves away from the traditional technologies of the web, becoming an interesting option for the future. With the language, you could talk to telecommunication equipment through a custom C extension. The recent update of Python corrects error messages, the ability to modify the PATH in the Windows installer and other resources to make things easier for the coders.

Python has a slight advantage over Java when it comes to the future, but none of them is perfect and Java users will continue to try to perfect the language by moving forward.

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The best language for you

We do not know which language to choose, but make sure that both languages ​​will be relevant in the coming years. Python is a good option for beginners, since the language is more intuitive and its syntax is similar to that of the English language. It is also in the midst of a revolution, because its open source nature is paving the way for a series of new tools to perfect it.

Java has a lot to offer as open source, in addition to handling performance issues more resolutely. The choice of a language is summarized to the preference, since Java turns more towards perfectionists who seek to build a clear and consistent code using a complex syntax. Some will prefer this system, while others prefer the flexibility, brevity and fluidity of Python.

 

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6 Software Development Trends for Developers

The demand for Blockchain developers will explode

Blockchain has become a high-tech theme in 2017, thanks in large part to the meteoric rise of Bitcoin. But in addition to the digital currency, blockchain is a technology ready to revolutionize almost all sectors. In 2018, we will begin to see the first attempts of this interruption through the business class blockchain platforms.

Many of the legacy technology companies introduced their own blockchain platforms in 2017. IBM is considered the leader and is already establishing partnerships with banks, food distributors and government regulatory agencies to place blockchain in use. However, Microsoft, Oracle and Amazon are far behind, and the battle for the blockchain domain at the corporate level is barely heating up.

What does all this mean for the software industry? Companies from all sectors will begin to create applications on blockchain platforms, which means that the demand for blockchain developers will explode. According to the 2016 numbers, there were only 5,000 full-time blockchain developers in the world. Certainly that number increased in 2017, but it is still little compared to the more than 18 million Java developers. 2018 will be a golden race for developers who are dedicated to blockchain, and most will become much richer.

The Shell Ursa Platform Rig is located 130 miles southeast of New Orleans, in the Gulf of Mexico. Platforms like this one will depend on edge computing for local data processing.

IoT is pushed towards the edge

Wearables such as Fitbit and Apple Watch receive most of the attention, but they are only a niche in the vast ecosystem of the IoT. From cars to highways, oil platforms in deep water to living rooms, almost everything is becoming a device for data collection. These devices collect huge amounts of data and IT companies are exploring cheaper and faster methods of processing everything. That’s where edge computing is going to play a role in 2018.

Edge computing uses a microdata mesh to process data near the device or at the “edge” of the network. Processing at the limit saves time and money on the portability of all data to a centralized data center. For the end user, this means that IoT devices can perform faster analyzes in real time, even when they are in a location with low connectivity (as in an offshore oil rig).

As cutting edge computing becomes a priority, database and network engineers are called to create the infrastructure of the future of the IoT. It is also likely that more companies adopt BizDevOps practices thanks to faster analysis in real time, giving developers a place at the strategy table.

Cutting-edge computing will affect all layers of the IT infrastructure, including the cloud. However, some experts are warning about the traps of edge computing, which leads us to…

Cyber ​​security reaches a turning point

With focus on Equifax, WannaCry, Uber and National Security Agency, 2017 has been a terrible year for private information on the web. That is saying something, considering the fiasco of the electoral invasion a year earlier. Security is the main concern of all companies, organizations and governments of the world, which means that resources will be flowing towards the development of new solutions.

Cybersecurity initiatives can be divided into two categories: internal and external. Internally, companies will be focused on creating security in their software. DevOps teams should focus on automating security testing in their software development life cycle. This will help ensure that vulnerabilities are not introduced during development.

Externally, venture capitalists are flooding cybersecurity startups with $ 3.4 billion in capital in 2016. According to the Crunchbase Unicorn Leaderboard, there are currently 5 cybersecurity startups worth more than $ 1 billion. , and we must see more emerge in 2018.

Although funding may not be a problem, there is a lack of cybersecurity talent. The Enterprise Security Group conducted a study and found that 45% of organizations claim to have a problematic shortage of cybersecurity talents. This shortage has consequences beyond the large companies. Jon Oltsik, of the ESG, believes that the lack of skills in cybersecurity “represents an existential threat to our national security.”

As well as blockchain and edge computing, cybersecurity represents another green grass for developers who want their skills to remain in demand for the foreseeable future. It could also be one of the most important jobs of our generation.

Continuous delivery is no longer a competitive advantage; they are bets on the table

The software delivery will reach speeds of level 1 of Formula 1 in 2018, led by giants like Amazon, which supposedly implement new codes every 11.7 seconds. Not every company needs to be so fast, but continuous delivery offers several advantages in addition to the speed of implementation. These advantages become table bets in competitive software niches.

In summary, continuous delivery is when the default state of your software compilation is “ready for deployment.” Once the code is written, it is integrated (called continuous integration), tested, constructed and configured. The only thing left to the developers is to click on the red “Implant” button. Companies like Amazon take this process one step further by implementing continuous implementation.

Despite accelerating the implementation rate, continuous delivery actually helps teams reduce the number of errors that transform it into production. Thanks to continuous testing, all errors are detected immediately and sent back to the developer for correction. In addition, continuous delivery helps teams follow the construction software that their customers want. Following the Agile principle of short feedback loops, continuous delivery quickly receives new releases in the hands of customers.

Continuous delivery requires several tools to operate, including a CI creation server, monitoring tools, and code management platforms. To learn more about continuous delivery, check out our article on the subject.

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Artificial intelligence becomes a necessity

We are reaching the point where companies need to adopt the IA to remain relevant. The domestic assistants activated by voice, smartphones, Big Data and Insight-as-a-Service providers will have great years as a result of this adoption of the AI. But this year’s biggest winners are data scientists and Chief Data Officers (CDO), who will be in high demand for a long time.

Forrester anticipates that Artificial Intelligence will blur the boundaries between structured and unstructured data and 50% of CDOs will begin reporting directly to the CEO. As a result, more than 13% of the jobs related to data on Indeed.com are for data engineers, compared to 1% for data scientists. This reflects the need for practical and action-oriented data professionals that can directly impact the results.

AI will probably have consequences that go beyond business. Already visionaries like Elon Musk and world leaders like Vladimir Putin believe that AI has the power to alter the landscape of the world. That is something to keep an eye on, to say the least.

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Virtual reality (can) go of current

2017 was the first full year of commercially available high-end VR headsets. Oculus Rift and HTC Vive from Facebook led the way in full-power VR systems (as opposed to systems equipped with smartphones, such as the Galaxy Gear VR), but adoption has been slow. Analysts estimate that less than one million units were sold between the two.

Both systems, however, are making major moves to expand the market in 2018. Facebook and HTC significantly reduced prices on their main devices. HTC announced a stand-alone headset only a few weeks after Facebook revealed the Oculus Go. Both “light” headphones will start with a much lower price to attract new users (the Oculus Go will start at $ 199).

On the entertainment side of the industry, storytellers are creating better and more immersive stories. Star Wars: Secrets of the Empire, is a virtual immersion ride that mixes virtual and physical elements in an epic game of adventure. “For the mainstream audience,” says Bryan Bishop of The Verge, “Star Wars: Secrets of the Empire may be the first time that virtual reality really offers the potential of the Holodeck that has been promising all the time.”

For developers who daydream as they must have worked with Ed Catmull and Steve Jobs in the first computer-generated film, VR offers another generation opportunity to be at the crossroads of entertainment and technology. 2018 may be the last time to get in early before I go to full Hollywood.

 

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Current trends in Java technology

Currently, the world of computer applications and sites has become so dependent on Java, that most sites and applications require Java installed on the devices that we use every day, so that they work perfectly. Varying from Internet phones to gigantic high-tech supercomputers, Java is the most popular choice, and it is operating on more than 7 billion devices and used by more than 9 million developers worldwide. As it is evident, the software has been in constant development in the last 20 years and continues in development, with new trends emerging almost every day. The development of Java in India also embarked on its journey to the heights and is well ahead on its way. As software development progresses, employment opportunities continue to increase, changing the shape of the Indian IT sector and the world for the better.

1. Java’s leadership position throughout the world

As mentioned earlier, Java took the day from 25th place to the highest position in computer programming languages ​​in the last two decades. Its wide reputation lies in its simple and efficient resources, such as language clarity, easy debugging process, universal compatibility and its immense potential. The applications and sites operated in Java are very scalable and are capable of processing more data than other programs in most cases. Over the years, many applications and programs have changed to Java from other programming languages, mainly because of their ability to scale and process data better than others. When compared to other programming languages, such as C, C ++, Ruby on Rails, PHP, Python, Perl, etc. Java is the most popular language by far.

2. Growing demand for Java and its response

The popularity of Java as an efficient programming language over the years has also led it to become one of the most used languages ​​in all kinds of software development programs. This language provides a large collection of libraries for Java developers, it sizes and processes complicated data better than most languages, it is compatible with all types of software, highly secure and friendly – in short, the best solution for web and web developments. Applications. Hence the popularity and growing demand. In order to meet the growing demand, many and many Java development companies emerged around the world, for example, JDK 6, 7, 8 and more recently, Java 9), IDE (IntelliJ, Eclipse, etc.), etc. . The growing demand for this software has its impetus in the growing demand for applications and mobile developments based on Android (80.7%) and Apple (17.7%) phones, in addition to other developments on the web.

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3. Internet of things or IoT

Internet of Things refers to a network that includes interaction devices, such as cell phones, interconnected with each other, capable of assembling and analyzing data information and finalizing the data. This technology is one of the latest trends in Java software development, one of the few that is capable of uniting all IT devices with each other. It is believed that the future of Java depends a lot on the development of IoT technology. The company that owns Java, Oracle, took on the challenge of developing end-to-end data storage solutions in embedded systems, thus creating a more secure use of the IoT. This is the main objective of Oracle’s The Kona project. This application works in processes such as control and management of smart devices in a house (TV, AC, fridge, etc.) through the smartphone. IoT technology, therefore, has led to many web applications that strive to create links between the user’s gadget and the devices that need to be managed.

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4. The present and future of Java developers

With the gradual increase in demand for Java among the other languages, the field of Java development has seen a great tendency to progress. As a result, job opportunities for Java developers increased a lot. Vacancies for Java developers were opened in the United States, the United Kingdom, India and around the world. The main reason for this is that the Java language ecosystem is very self-sustaining, with its adaptability, efficiency, compatibility, scalability and language ease. The new Java 9 (JDK 9) is the latest trend developed by Oracle for Java, which will be launched in 2017.

The Java programming language has been on a roller coaster in popularity since the beginning. But he proved his resistance by returning several times to the global IT market, with better and improved resources on all occasions. The viability of Java and other resources that make it the most popular programming language in the world, has given ample opportunities of work for Java developers around the world. Java software development company in India and other countries of the world flourished with the growing popularity of Java.

 

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Latest trends in Java technology for 2018

Each year, Java continues to grow and evolve, maintaining a prominent place among the most used and popular programming languages. Its versatility, changes and improvements already known make Java easier to use, climb better and work more smoothly than before.

Among the most interesting developments for Java professionals are: Java EE is now an Eclipse project; Oracle accelerated the launch rate of Java SE and the expected modularization through the Java Platform Module System, better known as Jigsaw, finally arrived.

Brief Retrospective: Java in 2017

Due to the many updates and advances, 2017 was very turbulent for the development of Java. These are some of the most significant Java transformations that occurred last year:

• Java continued to maintain its position with legacy applications and its enormous popularity among Android applications;
• Java EE has moved to an open source database with a new host for Eclipse Enterprise for Java (EE4J);
• Java EE 8 was released in September 2017;
• MicroProfile also experienced some progress;
• The Android community has accepted the Kotlin and we will see even greater changes in the future.

Java in 2018

The tremendous transformation and major updates that took place in 2017 took Java very far, bringing countless benefits to the IT sector, which also contribute to the advancement of other fields. Some of the predictions that the experts made are:

• huge changes in the EE4J;
• Strengthening the impact that Java J2EE has as a result of the increased popularity of the US community.

The wide selection of various tools available in the market makes it difficult for developers to choose just one. Java tools are not an exception. But it seems that 2018 will give a boost to many of the lightweight tools, including Eclipse, Java Development Kit (JDK) and Oracle JDeveloper.

Let’s look at the most significant trends, the most interesting tools and the changes in the Java environment for 2018.

The year of the eclipse

The Eclipse Foundation is becoming more important as projects like EE4J and MicroProfile begin to be supported by the platform. This is expected to bring accelerated innovation since the open community can now be more involved in them and in other projects related to Java.

Accelerated Convergence

The broader efforts to simplify the development and administration of software bring containers and runtimes like Java more closely related. They are optimized together to allow continuous administration and configuration of Java applications. The goal is to provide consistent memory management and an easier connection between Java constructions and containers so that developers can take full advantage of the use of containers and Java runtimes.

Faster release model

Another great development is the new six-month launch interval, which means more frequent changes and the faster introduction of resources for Java applications. These resources are available in business stores and allow the use of Java to solve new problems and enter new areas. Although large organizations need to wait a little longer for long-term launch support, they will have a clearer script, and it will be easier to plan for future development.

Rise of Kotlin

Kotlin seems to be increasingly popular in the world of programming. Its concise coding syntax and interoperability with Java have already made it a success among developers. It is expected that additional first class support for Android will further improve its use for mobile development.

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Platforms without a server

The demand for serverless platforms is growing. It started as a consumption model and expanded from simple event programming models to composite flow-based systems. This innovation continues to evolve as developers prefer to keep the focus on working on their applications without having to worry about servers. This change means that Java servers will need to be optimized and reproduced to work in a serverless environment

The Java ecosystem is huge and has been changing and evolving to meet the needs of industry and developers. Consequently, it provides the necessary tools and technologies to support all diversified users and their demands. The new and updated tools, platforms and old structures will add a new dynamic to the Java world, including faster updates of existing applications and the introduction of new resources on a regular basis. 2018 brings many changes and requires a change of mentality in all companies that are working at a slower pace and using older tools and frameworks.

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There are countless conferences that discuss these changes and news, allowing the IT community to keep up to date with the latest and most important trends, technologies and developments. And two of the largest IT conferences in Poland are held next week in Krakow.

The first of these, held on Tuesday, May 8, is the Code Europe, which is a more general IT conference that addresses topics such as Cloud Computing, IoT, Data Science, DevOps, Mobile, Programming Languages ​​and much more. . . The next day, on Wednesday, May 9, GeeCon begins, a conference focused on Java-based technologies and Java Virtual Machine, with a duration of 3 days.

If you want to know more about the latest Java trends discussed in this article, listen to the most important IT and technology news, have the opportunity to listen to lectures by world leading IT experts, connect to companies and find your next opportunity job.

 

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Java and the Internet of Things

Examples of how Java is shaping the Creator Movement and the Internet of thing

The recent MakerCon Conference, organized by Oracle, along with Maker Faire 2014, has made it clear that the Maker Movement, a vital source of hardware innovation, is igniting and opening rich possibilities for Java developers. The combination of Maker Maker’s ingenious smart devices and embedded software technology is fundamental to the development of the connected world, the Internet of Things (IoT) and machine-to-machine (M2M) technology. As embedded devices become cheaper, more powerful and more connected, and as the Internet of things grows, Java developers are receiving strong support from Oracle as they face new challenges and radical opportunities. Java is better equipped to serve as a unified standardized platform for the Internet of things. For this purpose, a great effort to unify the Java platform is underway – specifically, Java ME with Java SE – to reduce the Java SE for the integrated space and smaller devices.

The Internet of Things and the rise of an M2M ecosystem are in the process of convergence with cloud computing and big data, demanding an integrated platform that runs from the device to the data center with Java. Oracle offers an integrated, secure and complete platform for the entire Internet architecture of Things in all vertical markets, with these main resources:

• Real-time response capabilities for millions of device endpoints
• Fastest time to market
• End-to-end security
• Integration with IT systems
• A coordinated global ecosystem of partners
• Lifecycle solution management and end-to-end compatibility

Java remains the number one choice among developers and the world’s leading development platform, with nearly 9 million Java developers worldwide.

What is the Maker movement?

The Maker Movement, with its focus on hardware innovation, has strong precedents in the history of the United States, perhaps more recently in the arts and crafts movement, the Do-It-Yourself (DIY) movement associated with Stewart Brand and the Whole Earth Catalog, originated in the world 1960s, and stereotyped garage creators with big dreams – best exemplified by Steve Jobs and Steve Wozniak, of Apple’s fame.

Wikipedia summarizes the manufacturer culture as “a technological extension of the DIY culture”, with typical interests, including “engineering-oriented activities, such as electronics, robotics, 3-D printing and the use of CNC tools (computer numerical control). “As the most traditional activities, such as metallurgy, carpentry and traditional arts and crafts, with emphasis on new and exclusive applications of technologies. The convergence of several historical forces – for example, the availability of tools and the Internet, including virtual communities, improved visualization and new software applications – is fueling the Maker Movement, which branches from northern California throughout the United States and Europe and East Asia.

The Maker movement now has magazines, blog sites, substantial literature, annual events and several hundred thousand people around the world participating in manufacturer activities each year. It has all the characteristics of a genuine movement, including a manifesto written by Mark Hatch of TechShop, which emphasizes nine key concepts: doing; the fee; give to; to learn; tool up; touch; take part; Support, support; and change.

In summary, the manifesto states that “doing” is fundamental to human expression and feeling, and sharing what you do is necessary to complete that totality. Giving what you did, or at least giving knowledge about how it was done, is a way of giving a part of yourself to the world. Establishing a path of learning throughout life is a key to human happiness. “Getting ready” is essential to being a successful creator – manufacturers are lucky because the tools have never been cheaper or more powerful. A spirit of play is fundamental to creative creation. In addition, the manifesto states that participation in the producer community will facilitate growth and, finally, that manufacturers must be ready, willing and prepared to change as technology accelerates.

Java finds the Maker movement

For many Java developers, the rise of the Maker movement presents an opportunity to renew their creative passions and explore new ways to apply their skills. The Java champion Vinicius Senger of Brazil is an example of this. Software developer for more than 20 years, Senger is the founder of Globalcode (his Portuguese homepage, which can be autotranslated by Google), the largest educational center in Brazil specializing in software development. He also started a company dedicated to residential automation and open source educational robotics and was the winner of the 2011 Duke’s Choice Award for his jHome project, which offers a residential automation API based on Java EE.

Senger is confident that the application of Java to M2M and IoT technology will have a great impact. “Bringing M2M and IoT for the Internet is going to change our lives, for example, in the health area, we now have clothes that monitor people when they sleep in. E-cigarettes can one day be connected to social networks on the Internet to help people to stop smoking, something we could not have imagined ten years ago The constant monitoring of the heart on the Internet is now a reality.

For Senger, the Internet of things reaches his personal life. “I have a sailing boat, and now my boat is part of the Internet so I can control it and know if someone is tying the engine, I have friends who like wine and now they monitor the wine and accompany the humidity, something goes wrong with refrigeration ”

The sky is the limit for Senger. “Every market has opportunities with M2M and IoT,” he observes. “It’s a very exciting time in the industry because we have many new devices, new computers and new boards, the market is growing so fast and there are so many opportunities and technologies to play.

So, what is the role of Java in all this? “Java was born to do that kind of thing,” says Senger. “In the last ten years, Java has been all about providing corporate solutions, selling items on the Internet and banks, but Java was initially designed as a programming language to connect things like appliances, we’re going back to Java for fifteen years., And Java creators are very happy with this development, Java is the best platform for the Internet of things because it is flexible for computers of different sizes.This is a good time for Java developers, according to Senger. to work with the embed is that there are so many possibilities. I like horses and I like wine – there are opportunities to find horses and wine. I like information about home and robotics, so I found an opportunity there, because the Internet of things, Java developers can put their passion into their work. ”

Senger strongly supports Oracle’s attempts to get involved with the Java community. “Oracle is making VM work very well on different types of computers and cards, like the Raspberry Pi,” observes Senger. “He’s doing a great job with tools like NetBeans, his work with the integrated space and the IoT community has been excellent, Oracle is serving the Java and Maker communities well.

User experience and the Internet of things

Noel Portugal, the main developer of the Oracle user experience, is confident that the Internet of Things will have a strong impact on the way we live, with sensors and devices connected in our homes and workplaces, which allows us to take more and more accessible data. advantage. According to Portugal, the status quo of the user experience (UX) is changing.

For Portugal, being a designer means having the ability to create something that did not exist before or replicate something, but in a new way. “I’ve always been very curious and obsessed with action and reaction,” says Portugal. “You do one thing, and another happens, I was excited to know that I could shoot something with a computer, so learning about microcontrollers and onboard devices has been very inspiring for me. Many manufacturers come from the software community. of software and not an electronic engineer – much of what manufacturers are learning now is already known by electronic engineers.New tools are available that allow software developers to design devices and make them work.

That’s where embedded Java enters history. “The Java team has worked with the built-in community to ensure that the software works well with Raspberry Pi,” says Portugal. “Therefore, we created Oracle Java SE Embedded in Raspberry Pi.”

What is it that Java developers who want to write on the Internet about what Oracle is doing to facilitate?

“Java Internet Powers, our banks and retail companies – is behind the scenes everywhere,” says Portugal. “So, we can apply the same architectures, security and communication protocols that we use in the company to a built-in device, I used Arduino, but it would be difficult to start a Web server with it, but with the Raspberry Pi, I can run a server or, for example, using general-purpose I / O, where I can connect sensors, the point is that developers can translate their Java development knowledge into the enterprise for integrated things. ”

Make Robots with Java

Dan Royer, from Marginally Clever, exemplifies the game between the maker spirit and Java. “I love making robots,” exclaims Royer, “and create different types, I use Java in practically everything I do, because he takes care of many things for me, I do not have to do any memory management and the documentation is really complete. Joy to work with Java. ”

Royer’s most popular product, Makelangelo, is an art creation robot that allows users to take a picture of the Internet or a phone and convert it in two seconds with Java software that communicates the GCode (the language of 3D printers to send a message to the Arduino platform, which then moves the motors that circulate around a board.All styles of image conversion and 3D management, together with other programs, use Java.

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Creating prosthetic hands

Ali Lemus, a Java developer in Guatemala, is working on a low cost prosthetic hand. The simple mechanical version costs less than $ 50, while a more sophisticated bionic version, based on Java, which is based on artificial intelligence (AI) and machine learning, sells for less than US $ 150.

By exerting tension with a shoulder, it is possible to move a prosthetic hand to grasp objects. “For more complex actions, we incorporate a Raspberry Pi that comes preloaded with embedded Java,” explains Lemus. “It uses artificial neural network sensors to read muscle data and then analyze the data, we have other microcontrollers that Java also works with, the flexibility of Java and its libraries make it an excellent combination.”

Lemus is creating a switch that will allow users to move between the mechanical and bionic versions of the hand. “It’s great to be able to grab and open things,” says Lemus. “But, if you want to paint, then you need the bionic version.” After two or three months of using the mechanical version, the person will be able to move back and forth with flexible sensors.The more the person to use, the better the AI ​​machine will work. ”

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A GUI driver based on JavaFX 2

Riley Porter, founder of Synthetos, uses JavaFX 2 to make CNC GUI (Computer Numeric Control) controllers for the TinyG motion controller for robots that make 3-D printers, among other things. A Python developer and trade malware expert, Porter learned JavaFX to the GUI. “It’s very difficult to create distributed binaries that work on all platforms,” ​​explains Porter. “I use Java SE 7 and JavaFX because I like its ability to do FXML design with weakly coupled UIs, my partner changes a lot on the backend, so I need to be able to check the card and figure things out. Data connection – I like being able to dynamically update things with connections so you do not have to worry about updates or observables. ”

Conclusion

With so much innovation happening so quickly, we can expect important changes in our daily lives in the coming years, if not months, as Java and the Creator Movement become better acquainted.

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10 amazing ways you can use Java

According to most calculations, Java is currently the most popular programming language for all types of purposes, which means that there is a huge variety of work options and interesting opportunities to earn money for engineers who specialize in it.

When considering what you can do with Java, many developers think about building:

• Application servers

• Web applications

• Unit tests

• Mobile apps

• desktop applications

• Business applications

This is a good list, but it does not cover the incredible variety of things you can do with Java. For example, many developers use Java to create games and tutorials. And Java often appears in the development of several languages ​​with products like JNBridge, which means that your Java experience can be useful, even if you are not writing pure Java applications.

Just look a bit – there is a good chance that Java developers will find a job that really makes work fun in the morning. If you need inspiration, take a look at the 10 surprisingly legal ways to make a living with Java:

1. Working in the cloud

As they do with many languages, software developers use Java to create cloud-based application services, Web APIs, client applications and so on. It’s not just that Java is useful for creating new applications in the cloud or moving existing applications to the cloud. But Java’s proven ability to work anywhere fits perfectly into the modern mix of cloud, mobile and desktop applications designed to work in the same way, regardless of where they are running. There is also no lack of AV / VR applications (many of which are mobile applications) that depend on cloud-based resources.

Companies like Belatrix specialize in outsourcing cloud development and Heroku provides cloud-specific services for Java. Or imagine creating an application that helps users see on their phones, tablets or other devices how hair will be when they are reused. According to ITFirms, many of the leading Java development companies are involved in cloud-based work with a wide range of high profile clients (think of organizations like Nestle, United Nations, Universal Studios, Jaguar and others).

Especially important for the development of the cloud is the unit test using simulations in a process called “teasing”, in which software objects are used to simulate real-world objects and determine whether unit tests pass or not. One of the most useful and most used to mock packages is the Mokito, which is based on Java. You can take advantage of the combined abilities of Mokito and Java to perform unit tests of all kinds of applications and devices, imagine unit test robots, satellites or IoT devices that depend on cloud resources to function.

2. Exploring space at NASA

The National Aeronautics and Space Administration (NASA) uses Java for several interesting applications. A personal favorite is the World Wind, a software development kit (SDK) that allows you to expand the space and examine any place on Earth. The data source is a combination of Landsat satellite images and data from the shuttle radar topography mission. Unknowable 90 application examples show how to use this SDK. Would not it be amazing to work on the code that makes all this possible? And in a blog post about the development of NASA’s mission software with Java, four NASA engineers detail the role that Java played in various space missions.

NASA is always creating interesting new products, so keep in mind the news from Ames Research Center. You can find a list of jobs for NASA at several sites, such as Indeed.

3. Working with Internet of Things

You have probably heard a lot about the Internet of Things (IoT) currently. The IoT is everywhere, from sensors on giant industrial machines to smart devices like security cameras. In fact, you knew that the popular Nest Thermostat has an interesting mix of Java and AI? Some smart sales machines are based on Java, using software to track stocks, temperature, humidity and location. In addition, many visible technology applications are built in Java.

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4. Developing autonomous cars

One of the most interesting and demanding applications of technology today is the autonomous car. Of course, you have to create robotics that can guide the vehicle and place the safe assortment of sensors to help the car avoid collisions, but some of the more interesting jobs use technology to perform tasks that humans consider more or less mundane . However, to place autonomous cars on public roads, developers must combine all these elements in a package that guarantees extreme reliability or faces public protests.

These tutorials and online simulations can help you understand how Java plays an important role in high-performance applications, such as stand-alone cars.

5. Help doctors make virtual domestic calls with chatbots

It was once, doctors made calls from home, visiting patients in their homes. This has not always been effective for doctors, but it was certainly convenient for patients. Now, there is an expanding medical approach designed to allow the doctor to stay in the office, but still visit patients at home. One of these projects is Doctor Online, which has Java in its application modules. Although not new, the system includes a complete set of modules designed to make the doctor-patient interactions convenient and fast.

In addition to telemedicine, more and more sites, including e-commerce sites, have chatbots to provide a personalized touch for everything from choosing the right clothes to tracking lost packages.

Eventually, we could see robotic medical devices that reside in the homes of those who need them. Remote doctors, through the robot, could perform simple tasks, such as checking a patient’s temperature, hearing heartbeats or checking blood pressure – all without leaving the office. In fact, one day the doctor may even be able to perform more advanced tasks, such as administer basic care or perform an electrocardiogram.

Java developers will be on the front line in the creation of this technology. As the medical profession looks for less expensive ways to meet the needs of patients, look for an increasing role for software engineers in creating the necessary software.

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6. Realization of big data analysis

Today, big data analysis is at the center of some of the most interesting uses of technology. Scientists from several key industries are using advanced data analysis techniques to discover new patterns in large amounts of data and better understand complex processes.

Although many engineers believe that Python or R are more suitable for these types of applications, Java is also used for many data analysis tasks, especially in extraction / transformation (ETL) processes. Java is often used to work with Hadoop implementations. Fortunately, a variety of tools are available to perform data analysis using Java, including libraries and frameworks such as Weka, Rapid Miner, MOA (Massive Online Analysis), SAMOA Apache, JSAT, Java Machine Learning Library – Java-ML, Retina Library , Java Data Mining Package – JDMP and many others.

It does not hurt that highly compensated big data jobs are emerging in a wide variety of data analysis applications and businesses. For example, these skills can be invaluable in helping social networks like Facebook, Twitter and LinkedIn deal with their management problems from everything from hate speech to terrorist recruitment. Java-based data analysis can, one day, help prevent a terrorist attack or discover large-scale voter manipulation.

7. Get your name on the big screen

Special effects companies like Industrial Light and Magic (ILM) have Java for all kinds of software-based wonders. Actually, you can often find jobs in ILM for almost any development skill. Currently, ILM uses a combination of Java and Python to handle tasks such as sequencing animation scenes.

8. Make games

Many popular video games today – like RuneScape, for example – run in Java. Basically, Java games are everywhere because Java works almost anywhere.

The Open JavaFX (OpenJFX) graphic package makes it easy to work with the types of images that make players go crazy. Actually, there are game development sites, such as Java-Gaming.org, that are totally dedicated to the needs and interests of Java game developers. You can also find specialized libraries for the development of games, such as the LWJGL (lightweight Java Game Library), designed to make the creation of Java games much easier.

Android makes extensive use of Java for applications of all kinds, including games. Check Mybridge’s list of 38 main applications written in Java – you may be surprised by the richness and variety of applications that depend on Java development skills.

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9. Become a mad scientist

There was always an association in popular culture between number processing and mad scientists. (In the end, how many people know that they label numbers as malignant?) Many modern developers do not consider Java to be the best language for numerical processing and scientific needs, and reviewers tend to cite their lack of mathematical libraries as a serious problem. problem. That may be why Python is more widely associated with these types of programming tasks.

However, Java may be a better solution for mathematics-oriented applications when you need to combine heavy numerical or scientific processing with smooth 2D or 3D graphics output. If you are a mad scientist in training and want to use Java, you need a library like JScience or JSci. Sites like Glassdoor provide lists of interesting works working with science and Java.

10. Going back to school

A large number of schools and educational institutions (from primary to medium and higher) depend on custom Java applications. Until recently, Java was the preferred language for learning programming skills in schools (it was recently obfuscated by Python) and is still widely used in educational settings.

The creation of educational applications and other applications for schools tends to involve the recording of a wide variety of smaller applications, compared to smaller, but larger, projects in corporate environments. In the educational world, you could code an application to accompany the statistics of the students one day and work in a modeling process for a laboratory another day. Freelancer offers job advertisements in this category.

Java is everywhere

These 10 lesser known things that you can do with Java only scratch the surface of how to transform Java skills into a rewarding career, a lucrative sideline or even a way to unlock the hidden potential in your current position. Java is so popular and widespread that there is no shortage of ways to find a fun and fascinating job with the language. With a little creativity and creativity, the Java experience can be your step into a fascinating career in almost every field.

 

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IoT is emerging as a disruptive trend for the development of mobile applications

Mobile applications, undoubtedly, have become indispensable for a business, but investing in a mediocre business will not do you good. When you really want to get into the mobility train, look for an application that goes beyond the ordinary. After all, the options for users out there are endless and you have to give them a good reason to pick it up from others. The answer lies in training your business application with the latest technologies that make it capable of providing superlative user experiences. The Internet of Things is one of those technologies that is being highlighted in the mobility scenario and there are many statistics that support this claim.

• By 2020, more than 34,000 million smart devices connect to the Internet.
• Industries worldwide will invest US $ 6 billion in the IoT over a five-year period.
• Big brands such as Amazon and Apple are at the forefront of adopting this technique in the development of applications. Amazon’s Lab126 is planning a $ 55 million investment in IoT development in the coming years.

Now that enough has been said about this futuristic trend, there is a need to understand the reason behind its growing popularity. We will clarify the role that IoT will play in the evolution of mobile application development in the near future.

Diversity in connectivity

Mobile technology drives connectivity between mobile devices, depending on the platform for which applications are created. But, once these applications are integrated in IoT, your company can generate extensive diversity in connectivity. In simpler words, mobile applications aimed at IoT are able to work with different devices, operating systems and platforms. With that, they can open greater opportunities for companies to expand their reach, connecting with users in different sets of things in an integrated manner. These “things” include smartphones, tablets, wearables, sensors and smart consumer electronics.

Improved user experiences

When it comes to user experiences, IoT applications have opened unparalleled opportunities to improve them. There is practically nothing that can not be done with these applications; from operating automated devices at home to industrial automation, powering smart vehicles, operating remote sensors and much more, everything becomes as easy as sliding or touching the smartphone. The retail sector can take advantage of Beacon-based IoT applications to create seamless collaboration across multiple sales channels.

Big Data Integration

Another big impact that IoT technology is causing in mobility is the integration of Big Data for the collection of massive data volumes for commercial use. Application developers for mobile devices use IoT in applications to collect data from disparate connected devices and combine them with analytics to gather useful information for the company. For example, information collected from connected devices can provide information related to user behavior, which the company can use to frame its customer segmentation strategies.

Improvements in the configuration of the organization

The growing adoption of business mobility has transformed organizations significantly, strengthening their architecture and central systems. Taking things one step further, they are investing in mobility solutions based on IoT to use the innovative automation technology to their advantage. These applications enable employees with remote connectivity and allow them to operate machines even when they are not in manufacturing facilities. In the same way, they can be used to monitor stocks and labor, in addition to simplifying other important business operations.

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Better security in application development processes

As a typical IoT environment comprises a large number of devices, the security of these devices, as well as the data they store, is always a concern for companies. Consequently, developers must adopt all essential security measures to ensure that neither devices nor critical data are committed at any cost. Here, the same technology that represents the threat comes to its rescue, because the IoT has the ability to protect the application code and data storage. You can scan different applications on a network at one time with IoT protection.

 

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Looking from another perspective: The role of mobile applications in the IoT

 

The role of IoT for the growth of mobile applications has been well explained. But we must perceive that the relationship between the two is symbiotic; While the adoption of the IoT contributes to the value of applications, the latter are also essential for the expansion of the IoT. An IoT-based system will not be complete unless there is a smartapp to operate the connected devices. “Physical things, such as devices, vehicles, workplaces, residences and even cities, must be synchronized with mobile applications to provide exclusive virtual experiences and provide everything that is expected from a connected and IoT-based environment. impossible to imagine the creation of such an environment, despite having access to the most advanced technologies.

Conclusion

Seeing the intrinsic connection between IOT and mobile applications, it is clear that you need both to create a successful IoT-based environment for your company. In this scenario, there is a need to associate with an application development partner that is able to combine both to provide a results-oriented business application, either for its consumers or for the organization itself.

OrangeMantra, with its experience in business mobility solutions and consumer applications, acts as the secure mobile application development company for diverse business needs. Our team of developers is on the side of the latest technological trends. Connect with us if you are looking for an application with IoT technology for your company and we will definitely create the right application solution for you.

 

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5 main features of JDK 7

What’s new in Java or JDK 7

It’s been almost a year since JDK 7 or Java 7 was released, but the programmer asks what’s new in Java 7? What is the best resource introduced in JDK7, where is the list of all the new Java 7 features, etc? I have thought about documenting the 5 main features introduced in Java 7 for easy reference, this will not only answer what’s new in Java 7, but it will also provide a quick overview of what these features are in Java 7. Java 7 introduced Many new features of Java programming language such as trying to capture with a resource, String on the switch, etc., but also makes a lot of change in the Java development API, introducing the new API files in Java and other small changes. For example. Now you can find hidden files of the Java program without applying any hack. Anyway, let’s see my list of the 5 main features of Java 7:

The 5 new new features of Java 7

Here are my Top 5 new favorite Java 7 features introduced in the Java programming language in version 7. There are many other features in Java 7 that are introduced along with these front line features, such as changes to the File API, that also deserve to be exploited

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Allow to use chain in case of switching

You can not use String in Switch or case statement before Java 7. Talk about allowing String in the case of Switch was growing since Enum was introduced in Java 5, although you can use Enum in the case of Switch, you can not do what same with String which is more common than Enum in the Java programming language. of the JDK 7 you can use the String in Switch case, see How to use the String in Switch case in Java7 for more details.

Multiple Exception in a catch block

This is the first resource that comes in my mind when people ask What’s new in the Java 7 resource? Can you cite some new features introduced in the release of JDK 7? From JDK 7, you can capture several Exceptions in a catch block. This is called the blocking feature of multiple Java 7 captures. This is a significant improvement of Java 7 made in the Exception handling because it will reduce the confusion in the Java Exceptions handling code. To learn how to capture several exceptions in the catch block once in Java 7, see this article. Explains this new feature of Java 7 beautifully.

Automatic management of resources or ARM blocks

Like the previous Java 7 function, automatic resource management (ARM blocks) also known as try with resource block is another significant improvement in the area of ​​exception manipulation in Java. The ARM blocks allow the automatic closing of resources, for example Files, Flows, etc., opened within the try block. The functionality must implement the Closeable interface in Java. See how to use the ARM block in Java 7 for more details.

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Fork binding structure in Java 7

Another new feature that you can use to answer the question of the Java interview What’s new in Java 7? The fork binding framework exists even before Java 7, but as a separate JSR. It has been added as a new feature in Java 7 to be part of the standard Java 7 main library. The fork binding structure allows writing code that can take advantage of several cores present in modern servers. See How to use the bifurcated link structure in Java 7 for code example and guidance on the use of the fork joint structure.

Diamond operator <> for type inference

Since Java 5 introduced Generics in Java, programmers complain that they are very detailed and generate duplicate code, which is true because when creating a java parameterized class object you need to provide type parameters on the left and right side. The diamond operator <> is a new Java 7 feature that provides type inference when creating generic class objects. Although you can achieve type inference without using Java 7, by creating the Factory method in Java, the Diamond operator is an easy way to get type inference in Java 7.

This was my list of the 5 new new features introduced in Java 7 and now you can reply What’s new in Java 7. These were some of the most popular new features of JDK 7. Many production systems are still running in several updates to JDK 6 But I guess they’re also slowly updating to Java 7. Now, even talking about Java 8 is growing, because you can enter closures in Java, which was previously planned to be released in Java 7 along with these new ones resources.

 

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