12 Frameworks Java Web Developers Should learn in 2018

INTRODUCTION

In today’s world, a good knowledge of several frameworks is very important. They allow you to quickly develop the prototype and the actual design. If you are working in a startup space, you are expected to take something legal in a short time and that is where the knowledge of the framework is excellent.

It also helps you get a better job and take your career to the next level, if you’re stuck somewhere working on boring tasks, like just starting and stopping the server, setting up some cron jobs and responding to the same old emails while keeping the job legacy applications.

In this article, I have shared 12 useful structures related to Java development, mobile application development, web development and Big Data. If you have another good framework that you think Java and web developers should learn in 2018, then be happy to share it in the comments.

1) Angular 2+

This is another JavaScript framework, which is on my list of things to learn in 2018. It provides a completely client-side solution. You can use AngularJS to create dynamic Web pages on the client side. It provides declarative models, dependency injection, end-to-end tools and integrated best practices to solve common development challenges on the client side.

Because it is a JavaScript library, you can include this in your HTML page using the <script> tag. It extends HTML attributes with directives and links data to HTML using expressions.

As Google is behind Angular, you can rest easy in terms of performance and regular updates. I firmly believe that AngularJS is here for the long term, so investing time in it is completely justified.

2) Node JS

There is no doubt that JavaScript is the programming language # 1 and the Node.js has a great role to play in it. Traditionally, JavaScript is used as a client scripting language, where it is used with HTML to provide dynamic behavior on the client side. It runs in the Web browser, but Node.js allows you to run JavaScript on the server side.

Tye Node.js is an open source open source open source runtime environment for running server-side JavaScript. You can use Node.js to create dynamic Web pages on the server side before sending them to the client.This means that you can develop a client-server application again in JavaScript.

3) spring boot

I have used the spring frame for many years, so when I was introduced to Spring Boot, I was totally surprised at the relative lack of configuration. Writing a Spring-based Java application using Spring Boot was as simple as writing a main Java application using the main () method.

Although I have experienced the Spring Boot, I still have many things to learn, and that is why it is on my list of things to learn in 2018.

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4) React

React is another library or JavaScript structure to create interfaces with the user. It’s like the Angular, but maintained by Facebook, Instagram and a community of developers and individual corporations. It allows Web developers to create large web applications that can change over time without reloading the page.

The world of Web development is divided between the Angular and the React and it is up to you to choose what you choose. Most of the time, it is dictated by the circumstances; For example, if you are working on a project based on React, obviously you will need to learn React.

If you decide to learn the React in 2018, then Pluarlsight’s React.js: Getting Started course is a good starting point.

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5) Bootstrap

This is another popular free software front-end web structure for designing web sites and web applications. First brought to us by Twitter, Bootstrap provides design models based on HTML and CSS for typography, forms, buttons, navigation and other interface components, as well as optional JavaScript extensions.

Bootstrap supports responsible web design, which means that the design of web pages is adjusted dynamically, depending on the size of the browser screen.

In the world of mobile devices, BootStrap is leading the way with its design philosophy for mobile devices, emphasizing a responsive design by default.

If you are a web developer and do not know Bootstrap, 2018 is the right time to start using it. Bootstrap 4 From Scratch is a good starting point for your Bootstrap trip in 2018.

6) jQuery

This is another JavaScript framework that dominates the world. JQuery has been my favorite for a long time and I advise all developers to learn jQuery. It makes the client-side script really easy.

You can make animations, send HTTP requests, load pages and execute client validation by writing just a few lines of code.

7) Spring security 5

There is no substitute for safety and, in 2018, it will be even more important. As Spring Security has become synonymous with web security in the Java world, it makes perfect sense to update with the latest version of Spring Security in 2018.

The new version 5.0 of Spring Security includes many bug fixes and a new full OAuth 2.0 module. Even if you do not know Spring Security, consider learning it in 2018, and there is no better way to enter the Eugen Paraschiv Spring Learning Master Class.

8) Apache Hadoop

Big Data and automation are the focus of many companies in 2018, and that is why it is important for programmers to learn Big Data technologies such as Hadoop and Spark. Apache Hadoop is a framework that allows the distributed processing of large datasets through computer clusters using simple programming models.

It is designed to scale from single servers to thousands of machines, each of which offers local computing and storage. It is based on the popular Map Reduce standard and is essential for the development of a reliable, scalable and distributed software computing application.

9) Apache Spark

This is another Big Data framework that is gaining popularity. Apache Spark is a fast in-memory data processing mechanism with an elegant and expressive development API to allow data professionals to efficiently execute streaming, machine learning or SQL workloads that require quick access to data sets. work data.

You can use Spark for in-memory computing for ETL, machine learning and data workloads for the Hadoop. I have already listed the Apache Spark Fundamentals course of PluralSight to be launched in 2018. If you are on the same boat, you can take the course to get some inspiration.

10) Cordoba

Apache Cordova is another mobile application development framework originally created by Nitobi. Adobe Systems bought Nitobi in 2011, renamed it PhoneGap and then launched an open source version of the software called Apache Cordova.

It allows you to use standard web technologies – HTML5, CSS3 and JavaScript for the development of cross platform, and one of the most advanced technologies to learn in 2018. If you want to learn Cordoba in 2018, check out Build iOS & Android Apps with Angular and Cordova, one of the interesting courses to learn Córdoba.

11) Firebase

Firebase is Google’s mobile platform that helps you quickly develop high-quality mobile applications and expand your business. You can choose the Firebase as a back-end for your Android or iOS application.

If you are thinking about entering the profitable business of mobile application development in 2018, learning the Firebase is a good idea, and the advanced iOS and the Firebase: Rideshare are a good place to start.

12) Xamarin

Xamarin is a way to quickly make mobile applications for all platforms with a single shared C # code base, create a custom native user interface for each platform or use Xamarin.Forms to create a single shared user interface between platforms.

It is owned by Microsoft and is fast becoming popular in the creation of mobile applications for C, C ++ and C # developers.

If you already know one of the C languages and are looking for a career in the development of applications for mobile devices, I suggest you learn Xamarin in 2018 and the Xamarin Developer Complete Course: iOS and Android! It’s a good way to start.

This is all about what to learn in 2018. These structures are in great demand, mainly Spring, Node.js and AngularJS. Learning these pictures will not only increase your chances of getting a job, but it will also open many doors of opportunity.

Even if you are comfortable with your job, keeping up with the latest and greatest technologies is essential to your career growth.

October 25, 2018 0

Object-Oriented Design Principles in Java

INTRODUCTION

In this article, we will learn the object-oriented design principles that can be applied in our daily design work. It is important to learn the basics of object-oriented programming, such as abstraction, encapsulation, polymorphism, and inheritance. But, at the same time, it is equally important to know the principles of object-oriented design, to create a clean and modular design. These guidelines help design a strong software design oriented to objects.

First, we will list the important principles of object-oriented design, and we will discuss each guideline in greater detail.

Encapsulate What Varies

If you know that your code will change in the future, separate.
The benefit of this OOP design is that it is easy to test and maintain the proper encapsulated code.
Only one thing is constant in the field of software and that is change. Therefore, encapsulate the code that you expect or suspect of changing in the future.
If you are coding in Java, follow the principle of making the variable and private methods by default and increasing access, for example, from private to protected and not public. Several of the design patterns in Java use encapsulation. The factory design pattern is an example of encapsulation that encapsulates an object creation code and provides flexibility to introduce a new product later regardless of existing code.

Code to an Interface Rather Than to an Implementation

Always schedule for an interface and not for the implementation. This will lead to a flexible code that can work with any new implementation of an interface.
Use the type of interface in variables, method return types or method argument type in Java. This has been recommended by many Java programmers, including books like Java effects and the first style design pattern.

Delegation Principle

Do not do all things alone, delegate to your class. A good example of the delegation design principle is the equals () method and hashCode () in Java.

To compare two objects for equality, we ask that the class itself make a comparison instead of the Client class doing that verification. The benefit of this design principle is not the duplication of the code and it is very easy to modify the behavior.

Open-Closed Principle (OCP)

Classes must be open for the extension but closed for modification.

Classes, methods or functions must be open to the extension (new functionality) and closed for modification.
The benefit of this object-oriented design principle is to prevent programmers from changing the already tried and tested code.

Dry —Don’t Repeat Yourself

Avoid duplicate code by abstracting common things and placing them in a single location.
Use an abstract class to abstract common things in one place. If you have a block of code in more than two locations, consider converting it to a stand-alone method or use a coded value more than once, with public static end constants.
The benefit of this object-oriented design principle is in maintenance.

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Single Responsibility Principle (SRP)

All the objects in our web application must have a single responsibility, and all the services of the object must be focused on loading this single responsibility (SRP).
If you put more than one functionality in a class in Java, introduce the coupling between two characteristics and, although it changes functionality, there is a possibility that it has broken the coupled functionality, which requires another round of testing to avoid any surprise. production environment.

Liskov’s Substitution Principle (LSP)

A subclass must be adequate for its base classes.
According to the Liskov substitution principle, the subtypes must be replaceable by supertype, that is, methods or functions, which use a type of superclass to be able to work with the object of a subclass without any problem.
PSL is intimately related to the principle of single responsibility and the principle of interface segregation. If a class has more functionality than a subclass, it may not support some of the features and violate the LSP.

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Interface Segregation Principle (ISP)

Statistics of the Principle of Interface Segregation that, a client should not implement an interface if he does not use it.

This occurs mainly when an interface contains more than one functionality, and the client only needs one functionality and not the other. The design of the interface is complicated, because after releasing its interface, you will not be able to change it without breaking the entire implementation.

Another benefit of this design principle in Java is that an interface has the disadvantage of implementing the entire method before any class can use it, so having a single functionality means less method to implement.

Dependency Injection or Inversion Principle

Do not ask for a dependency – a structure will be provided. This was very well implemented in the framework of Spring. The beauty of this design principle is that any class that is injected by the DI structure is easy to test with the mock object and easier to maintain because the object creation code focuses on the structure and the client code is not full of it.
There are several ways to implement a dependency injection, such as the use of bytecode instrumentation, which some AOP (Aspect Oriented Programming) frameworks, like AspectJ, do, or use proxies, as well as those used in the Spring. See this example of the IOC and the DI design standard to learn more about this SOLID design principle

October 24, 2018 0

3 Ways to Learn Spring Core, Spring MVC, Spring Security, and Spring Boot Framework

INTRODUCTION

If you are a Java developer and want to learn spring, then you came to the right place. In this article, I will share three ways to learn the Spring framework, but before that, we will understand what a spring framework is and why Java developers should learn the spring framework? Well, Spring is a framework that helps you develop Java applications by following some of the best practices, particularly the principle of dependency injection and control inversion. In accordance with this principle, instead of the class requesting its dependency, the framework provides at runtime. Following these principles improves the quality of your code, since it reduces the coupling between different parts of your applications. between modules and classes, which makes them easier to test and develop.

Due to this quality and several other useful features, Spring framework has become a standard way to develop Java applications, Java and Java Web applications, particularly using Spring MVC, which implements another popular MVC design standard to facilitate the development of Web applications using Java technologies.

When it comes to learning a new technology or a new framework, my 3-point action is to participate in a course, read a book and build a project. I have followed this principle to learn some things in recent years and it works very well.

Starting with a course give you a lot of need to get it because it is usually the start that is very difficult. At that time, you do not know how to set up projects, how to run them, what library is necessary, how to debug, how to check records, etc. After participating in a good course, you will have someone expert in this technology explaining these principles for you.

Once you have found your feet, it’s time to dive into the background and start building projects and follow a book. In this way, you learn technology in depth, exploring yourself, instead of someone who leads as in a course.

Btw, like Java, spring is also wide. There are several modules, and. Spring Spring, Spring MVC, Spring Security, Spring Data and Spring Boot and you need to decide what you want to learn. As most developers want to learn the Spring MVC, I suggest you start with Spring Core first and follow the Spring MVC part.

Spring Core

Spring core is the central structure that provides the necessary vessel to implement dependency injection and control inversion. It also provides a useful library with many useful functionalities similar to the Apache commons, but the most important thing is that you always need the spring kernel, because Spring MVC, Spring Security, everything is based on it.

Now the big question is what book to read and what course does it join? Well, when it comes to entering a course, you should always look for when it is updated for the last time and how many students have already adhered to it. That speaks a volume about the content and the popularity of the course and about this parameter, I found Spring Framework Master Class to be the best way to start.

It is reliable for more than 53,483 students and is also quite up to date. It also addresses the spring-in-depth framework, including Spring Core, Spring JDBC, Spring Boot, as well as how to configure and develop the Spring application using Eclipse, testing units and configuring the Spring application using Java and XML configuration. If you are starting with the frame of spring, then this is probably the best way to start.

When you get to the books, well, there are many books in the spring frame and I have read more than some, but the book I found most useful and updated is the Spring in Action 4th Edition, which covers the Spring 4.

This book covers most of the material related to spring, for example. Spring Core, Spring MVC and even some part of Spring Security, so I advise all Java developers who want to learn to read the book in this book.

Btw, if you already know Spring and are more interested in learning new reactive programming features introduced in Spring 5, then Spring Framework 5: Beginner to Guru is a better course. It is short and simple and can be updated quickly with Spring 5.

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Spring MVC

Spring MVC is a structure to develop a web application using Java technology following the MVC design pattern, that is, the view control model. This provides a clear separation of functionality or concern, facilitating the development of a Java-based web application.

Once you have gone through the book and the course that I mentioned in the first section, you already have a good knowledge of Spring MVC, but if you want to learn in depth with some help in creating a single project, then the Spring MVC for beginners : Build Java Web App in 25 steps is a good place to start.

This course will teach you the Spring MVC, building a step-by-step project. Precisely, it will create a basic administration application of tasks per piece in 25 steps.

Spring Security

Spring Security is used to provide authentication and authorization support out of the box. As the majority of the Java web application needs the access control and access mechanism, you will find the Spring MVC and the Spring Security used together.

The structure is very sophisticated and provides several features to support authentication and authorization through a database, LDAP or any custom source.

The Spring in Action book of the 4th Edition addresses part of Spring Security, but does not provide full coverage, for example, it does not include OAuth or OAuth 2.0 and many advanced concepts that are addressed in the course of security safety security certification by Eugen Paraschiv.

If you are a beginner who is starting with the security of Spring or someone who already knows the security of Spring and wants to improve their knowledge about the security of Spring, this course is one of the most updated features. It was recently updated to also cover Spring Security 5.0.

Spring boot

He is one of the relatively new members of the Spring family. As the name suggests, this framework helps with the boot process. One of the most difficult things with Spring is to start with the set and the project, where you need to create a lot of XML configuration or use many annotations in Java classes and then create a WAR file and deploy it to a web server to run it.

There was not a simple way to start a Spring application exactly as a Java application starts by writing a main () method. The Spring boot solves this problem by simplifying the boot process.

It also provides options to incorporate a Web server for rapid development. In short, the Spring Boot offers all the power of the Spring Framework without all its complexity.

To begin, you can join the course Learn Spring Boot – Rapid Spring Application Development from Udemy, it is an excellent course with several practical examples. You not only learn Spring’s initialization but also Spring MVC to develop a web part, security to protect your application, JDBC to connect to the database and even learn how to exploit your services as REST.

Btw, if you are more interested in learning Spring Boot 2.0, the latest version of Spring Boot, then I suggest you take a look at Spring Framework 5: Beginner to Guru, which covers not only Spring 5, but also the Spring Boot two.

When it comes to books, I’ve only read Spring Boot in Action so far and I’ve found a great resource. I am planning to learn more books about Spring Boot and I will share if I find a good one.

It’s about how you can learn the spring frame and its different parts, and. Spring Spring, Spring MVC, Spring Security and Spring Boot. As I said, it’s very important for a Java developer to know the Spring to improve their chances of getting a better job or opportunity, and when you need to learn something new, the 3-point action, that is, join a course, Reading a book and building a project really workswell.

October 22, 2018 0

Top 5 Spring Cloud Courses for Java developers to learn online

Spring Cloud

Spring Cloud is nothing more than a Pivotal open source library form under the Spring umbrella to help the Java developer create cloud-based applications. Development for the cloud has its own problems and Spring Cloud’s motto is to facilitate the development of a local application, if it is not easier.

When you develop for the cloud, you do not have to worry about many things, for example, hardware, installing the operating system, installing the database, etc., but your application still needs them. Cloud providers such as Cloud Foundry and Heroku provide this, but you need to do some work to access these services and that is where the Spring Cloud helps.

It provides elegant cloud connectors for easy access to services that abstract all the specific details of the cloud and allow you to access these services through the host, port and other connection details that you normally use when developing the Java application.

For example, if you need a database for your application, you must create a DataSource object based on the database service provided by your cloud provider. Spring Cloud eliminates all the work required to access and configure the service connector and allows you to concentrate on the use of these services.

He comes with the implementation of CloudFoundry and Heroku, but it is extensible enough to support another Cloud. All you need to do is simply implement some interfaces and add the JAR to the classpath.

You do not need to make an effort or build the Spring Cloud to support a new cloud provider. Josh has explained this in good detail in his recent book, Cloud Native Java, one of the mandatory readings for Java developers in 2018, which you can read after going through one of these spring cloud courses.

Top 5 Spring Cloud Courses for Java Developers

Either way, now that you know what the Spring Cloud is and how it helps create Java-based cloud applications, watch some of the best courses to learn Spring Cloud by Udemy and Pluarlsight, two of my favorite places for online learning .

Spring Cloud Fundamentals

If you are looking to develop a native Java cloud application in 2018, this is the best course to participate.

In this course, the author of Dustin Schultz, Spring Cloud Fundamentals, explains how Spring Cloud helps you migrate your existing Java application to the cloud and develop Java applications for the cloud from scratch.

You will also learn about the essential components of the spring cloud to develop microservice architecture and patches such as service discovery (Netflix Eureka), distributed configuration (Spring Cloud Config Server), intelligent routing (Netflix Zuul), circuit hopping ( Netflix Hystrix) client of lateral load balance (Netflix tape), etc.

After completing this course, you will have enough experience to create a native application in the cloud using the spring cloud.

Java Microservices with Spring Cloud: Developing Services

This is a great course to start learning how to develop Microservices in Java using the Spring Cloud.

Instructor Richard Seroter is an authority on cloud and application integration space. She also works for Pivotal, the company behind the Spring framework and is the author of many blog posts and books on cloud integration strategy and applications.

In the course of Java Microservices with Spring Cloud: Developing Services, you will learn what Microservices is and how the Spring Boot and the Spring Cloud help you develop Microservices using the Java programming language.

You will also learn about different Microservice patterns and will pursue performance through distributed crawling, which will help you create better Java micro-services.

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Microservices with Spring Cloud

If you want to develop Microservices in Java using Spring Cloud, then this is the perfect course for you.

In the course Microservices with Spring Cloud, instructor Ken Kruger will teach you what is Microservice architecture and what are the pros and cons of it with respect to the traditional monolithic Java application.

During the course, you will learn how to create a Microservice application using Spring Cloud and using several subprojects, such as Spring Cloud Config Server, Eureka, Ribbon, Feign, Hystrix and others.

The course will also teach how to develop the Spring Boot application using web interfaces, REST and Spring Data.

It is also a practical course, as you solve the exercises and develop an application to apply the knowledge you learn. In general, a good way to start with the Microservices using the Spring Cloud.

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Master Microservices with Spring Boot and Spring Cloud

This is another amazing course to learn the development of Microservice using the Spring Cloud. In this course, you will start from the RESTful Web services and end with the microsis.

The Master Microservices course with Spring Boot and Spring Cloud teaches a variety of libraries and structures that start with RESTful Spring Boot and Spring Cloud Web services.

You will learn the tape to implement the load balancing of the client, Eureka for service discovery and an API gateway using Zuul. You will also learn distributed microservice tracing with Spring Cloud Sleuth and Zipkin.

In general, a complete course to learn how to develop microinsurance with the Spring Cloud.

Microservices with spring start and spring cloud

This is a course very focused on the development of Spring Cloud Microservice and, like the previous courses, you will also learn about Spring Cloud and how it facilitates the development of native Java applications in the cloud.

The Microservices course with Spring Boot and Spring Cloud begins with the creation of a Microservice application based on the Spring Boot, and then uses Spring Cloud resources, such as Eureka, Feign, Ribbon, Spring Cloud Config Server and hystix circuit breaker.

You not only learn about Microservice, Spring Boot and Spring Cloud, but you also get access to several interview questions and answers to design questions and architectural challenges to clarify any interview.

This is all about some of the best courses to learn Spring Cloud and the development of Microservice in Java. Spring Cloud provides all the tools and libraries needed to develop Java applications for the cloud, and experienced Java developers should take advantage of it.

Spring Cloud makes it really easy, eliminating all the hard work necessary to access and configure individual services, and that is why it is the best framework to develop Java applications for the cloud.

If you want to learn the development of Java-based cloud applications using Spring Cloud in 2018, this is the perfect course to start. I strongly recommend these courses for all Java and Spring developers with 2 to 5 years of experience, technology leadership and solution architects.

October 20, 2018 0

Server Side Deployment on the JVM

JVM deployments with the server outside, inside, and alongside a web app

Over time, the success of a web application can influence technology options for continuous support and personalization. For example, Twitter was initially a Ruby on Rails application, but the Ruby back-end services were replaced by applications running on the Java Virtual Machine (JVM) and recorded in Scala. With this in mind, it is important to recognize that Java development practices and the use of the JVM have greatly expanded in recent years. These changes can facilitate the transition from initial projects to mature and large-scale applications.

This article will demonstrate how a project can be developed initially very quickly, with a view to a variety of implementation options. More specifically, a small web application will be recorded in Ruby, but packaged in a WAR (Web Application Archive) file. The options to implement the WAR file with the external, internal or parallel server allow this type of scalability and availability to be required in modern implementations based on cloud and intense traffic. Using a standard WAR file for implementation, the application is packaged in a format that can be easily replaced by a similar package written in Java or another JVM language.

Note: For the example described in this article, you can use any Ruby implementation of your choice (JRuby or Ruby based on C).

Java and alternative JVM languages

The JVM emerged as the most prominent language-independent virtual machine destination and is optimized to be executed on a wide variety of platforms. He has matured over the years and now supports an increasing number of alternative languages compiled by the JVM bytecode. Each version of JVM includes new features that enhance the JVM’s ability to support and optimize the performance of additional languages. These qualities resulted in the popularity of JVM and are considered seriously for many types of software projects.

Java is an excellent software development language for general purposes, but it is not necessarily the best option for each project. The JVM languages include JRuby, Jython, Groovy, JavaScript, Scala and Clojure. These languages are impressive implementations by themselves, and all share the desirable quality of execution in the JVM. During the initial phases of a project, it may be preferable to use scripting languages specifically oriented to the productivity of the programmer. Using JVM implementations, a project written in one language can be ported more easily to another, if necessary at a later point.

JRuby is one of several popular JVM languages in use. It is less “strict” than Java in several ways, which promotes rapid initial development. But some of the resources that make Ruby a popular choice for programmer productivity can be the source of problems as the project grows. Java provides type security and high performance required by more mature projects. One way to simplify the process of transitioning from a Ruby project to Java is by packaging the Ruby code into a Java WAR file. This allows the target deployment hardware and the installed base software to remain constant when the project moves from JRuby to Java.

Deployment options

Although much time and attention are spent during the software development process, the ultimate goal is the implementation in a production environment for end users. This goal is best achieved by initial planning that, at a minimum, does not result in an election that is unsustainable for the use of production. Implementation practices are governed by the unique functional and technical requirements of each application. The characteristics of the destination server, the expected web traffic patterns and the available hardware also contribute to deciding where an application will be implemented. After selecting one or more deployment destinations, the form of implementation should be considered.

Programmers are creative people and usually take delight in creating smart ways to solve problems. This quality is laudable when addressing the requirements of end users, as long as standards and conventions provide the structure of the work. Creation and implementation tasks are not the place for creativity. These tasks do not respond directly to the needs of the end user and must be completed in the most efficient and consistent manner possible. The creativity in the creation and implementation practices results in highly personalized exclusive projects, difficult to support and modify. In the end, this type of automation of the “snowflake” project hinders the development efforts it intends to promote.

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Server outside

Traditionally, web application servers were installed independently and configured by system administrators. The WAR or EAR (Archived Enterprise) files were deployed to those servers after the entire installation and configuration were completed. The server was outside the web application. This method is still a great way to implement applications and complies with Java EE standards that are well established and understood among Java developers.

However, a challenge with this method is that each developer needs an application server for local testing. Unless an application server is easily available in a preconfigured virtual machine, individual developers must set up their own workstations. This process can be guided and simple, but in some cases, developers are forced to mount a configuration whose description is hidden in email messages, and then debug error log messages to fix configuration problems.

Another challenge is that developers can use different processes to implement an application. One developer can use a Web interface, another can copy the file to a directory that is “observed” by the application server and another can run an internal utility or script to deploy the application. These inconsistencies in the implementation process can frustrate attempts to have clear communication among developers.

These problems can be overcome by incorporating the implementation functionality in the project. For example, Maven-based projects can use standard add-ons (for example, for Oracle WebLogic Server) that reduce the implementation process to a single command. This is an improvement that provides coherence and control among developers.

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Server within a development project

There are also build plug-ins that incorporate a server, such as Jetty or Apache Tomcat, into a plug-in used by the project. This approach eliminates the need to install a separate web application server. The server (and any associated configuration) can be maintained within version control. If the server is updated, all developers will have the updated version next time they retrieve the most recent code.

This solution is specifically aimed at developers, however, not the actual implementation. It is unusual to implement an application running on a server provided through a Maven add-on. In general, the computers that use these add-ons are still implemented on an external server for centralized testing efforts and final production. A server should not be attached to a project creation tool when it is deployed in a production environment.

Server inside and Alongside

This leads to two more recent solutions: integrate the server to the application file itself or implement the server next to the application. A server can be included within the application code and controlled within this context. This method reduces the implementation requirements for a single standalone file that can be called by the java -jar command. An alternative is to keep the application server code independent and include it next to the actual web application. This method is usually executed by passing the application server as the first argument to the java -jar command and passing the web application as the second argument.

October 19, 2018 0

java 11 official release

The Java Platform, Standard Edition 11 Development Kit (JDK 11) is a resource version of the Java SE platform. It contains new features and improvements in many functional areas.

You can use the links on this page to open the release notes, describing important changes, improvements, APIs and extracted resources, APIs and failed resources, and other information about JDK 11 and Java SE 11.

Links to other sources of information on JDK 11 are also provided. The JDK Guides link and the reference documentation below show a page containing links to user guides, information on problem solving and specific information of interest to the users. users that move from previous versions of JDK. The links to the JDK API specification 11 and the Java language and virtual machine specifications are provided in the JDK specification group 11

Introduction

The Release Notes describe important changes, enhancements, APIs and extracted resources, APIs and failed resources, and other information about JDK 11 and Java SE 11. In some cases, the descriptions provide links to additional detailed information about a problem or change. The APIs described here are those provided with Oracle JDK. It includes a complete implementation of the Java SE 11 platform and additional Java APIs to support the development, debugging and monitoring of Java applications. This page does not duplicate the descriptions provided by the platform specification of Java SE 11 (18.9) (JSR 384), which provides informative information for all specification changes and may also include identification of APIs and resources deleted or reproduced not described here. The specification of Java SE 11 (18.9) (JSR 384) provides links to:

Annex 1: The complete specification of the Java SE 11 API.
Annex 2: An annotated API specification that shows the exact differences regarding Java SE 10. Informational information about these changes can be found in the list of change specification requests approved for this release.
Annex 3: Java SE 11 editions of the Java language specification and the Java Virtual Machine specification. The editions of Java SE 11 contain all the corrections and clarifications made from the Java SE 10 editions, as well as additions of new features.

You must be aware of the content of this document, as well as the elements described on this page.

The descriptions on this Release Note page can also identify potential compatibility issues you may encounter when migrating to JDK 11. The Kinds of Compatibility page on the OpenJDK wiki identifies three types of potential compatibility issues for Java programs used in these descriptions:

Source: Source compatibility refers to the conversion of Java source code into class files.
Binary: Binary compatibility is defined in the Java language specification as preserving the ability to link without errors.

Behavioral: Behavioral compatibility includes the semantics of the code that runs at run time.

See CSR Approved for JDK 11 for the list of closed CSRs in JDK 11 and the Compatibility and Specification Review (CSR) page in the OpenJDK wiki for general compatibility information.

Changes and important information

Below are some important changes and information about this release. In some cases, additional details are provided about the changes described below in these release notes.

The implementation stack, required for Applets and Web Start applications, has been removed in JDK 9 and has been removed in JDK 11.
Without an implementation stack, the entire section of supported browsers has been removed from the list of compatible configurations of JDK 11.
The automatic update, which was available for JRE installations on Windows and MacOS, is no longer available.
In Windows and in MacOS, the installation of JDK in the previous versions optionally installed a JRE. In JDK 11, this is no longer an option.
In this version, the JRE or JRE of the server is no longer available. Only the JDK is offered. Users can use the jlink to create smaller custom runtimes.
JavaFX is no longer included in the JDK. It is now available as a separate download of openjfx.io.
The Java Mission Control, provided in JDK 7, 8, 9 and 10, is no longer included in Oracle JDK. Now it is a separate download.
Previous versions have been translated into English, Japanese and Simplified Chinese and French, German, Italian, Korean, Portuguese (Brazil), Spanish and Swedish. However, in JDK 11 and later, translations into French, German, Italian, Korean, Portuguese (Brazilian), Spanish, and Swedish translations are no longer provided.
The updated packaging format for Windows has changed from tar.gz to .zip, which is more common in Windows operating systems.
The updated package format for the macOS has been changed from .app to .dmg, which is more in accordance with the standard for the macOS.

October 17, 2018 0

INTRODUCTION

1) Angular 2+

2) Node JS

3) spring boot

4) React

5) Bootstrap

6) jQuery

7) Spring security 5

8) Apache Hadoop

9) Apache Spark

10) Cordoba

11) Firebase

12) Xamarin

INTRODUCTION

Encapsulate What Varies

Code to an Interface Rather Than to an Implementation

Delegation Principle

Open-Closed Principle (OCP)

Dry —Don’t Repeat Yourself

Single Responsibility Principle (SRP)

Liskov’s Substitution Principle (LSP)

Interface Segregation Principle (ISP)

Dependency Injection or Inversion Principle

INTRODUCTION

Spring Core

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Spring MVC

Spring Security

Spring boot

Spring Cloud

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Spring Cloud Fundamentals

Java Microservices with Spring Cloud: Developing Services

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Microservices with Spring Cloud

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JVM deployments with the server outside, inside, and alongside a web app

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Server outside

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Server within a development project

Server inside and Alongside

Introduction

Changes and important information