Java Interface

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Either you are a beginner or a professional in Java programming language, you must have come across the term Java Interface. As a beginner, if not, actually you have not learnt the Java language properly. Even you may not be a good Java Programmer, if you have not learnt each aspect of a Java Interface. You are expected to know about Java Interface in a deeper way. Additionally, what are the changes introduced in newer versions of JDK, especially in JDK8. For example, the introduction of default and static methods in Java Interface. Needless so say, the introduction of new features in Java 8 has completely changed the definition of Java Interface. Before Java 8, no method with a body was

WebSecurityConfigurerAdapter Deprecated In Spring Security

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websecurityconfigureradapter deprecated In the context of the Spring Security module, WebSecurityConfigurerAdapter is an abstract class which has been deprecated from Spring Security 5.7.0-M2 as per an announcement posted in the Spring Official website, on 21st Feb, 2022. It was generally used to extend configure() methods by a custom configuration subclass. As a result, it encourages users to move towards a component-based security configuration. To support with the change to this new design of configuration, we will discuss a list of common use-cases and the proposed alternatives going forward. Therefore, we will discuss about the implementation of use cases on how to resolve WebSecurityConfigurerAdapter deprecated warning. It is important to know about this change because sooner or later we will be developing security

Spring Batch Tutorial

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Generally, all applications have some data in some form. In enterprise applications, we deal with large volume of data. Sometimes processing a single operation faster is not sufficient due to the large volume of data. This requires a robust transactional control and failure recovery mechanisms, which are complex to implement. In order to handle all this, Spring Framework provides a module 'Spring Batch' for the Batch Processing. Therefore, our topic for discussion is 'Spring Batch Tutorial'. Spring Batch Processing offers processing of data in the form of batch jobs. Spring Batch offers reusable functions for processing large volume of records. It also includes logging/tracing, transaction management, job processing statics, skip, job restart, and resource management. Spring Batch has taken care of

Java 14 Features

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After the release of Java 13 on 17 September, 2019 and completing the six-month cycle, Java 14 version was released on 17 March 2020. We can download Java 14 from here. Here we will talk about Java 14 Features. Some of the Java 14 Features are in 'Preview' Stage, while others finalized by Oracle community. One of the popular feature 'Switch Expressions' which was a Preview feature is now approved in Java 14. We will discuss in detail about all the Java 14 Features in this article. Java 14 Features  As a developer, we have following new features which are added in Java 14. 1. Record Type (Preview) 2. Switch Expressions 3. Pattern matching for instanceof Operator (Preview) 4. Helpful NullPointerExceptions 5. Text Blocks (Preview) What is a Preview

Java Features After Java 8

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After Java 8, Java 9 has big changes & new features. Here in this section we will talk about Java Features After Java 8. If you are preparing for a Java developer interview, there are 100% chances that, you will find some questions about this topic. This article may work as a refresher for the interview. You can learn about Java 8 Features from a separate article. We will update this article on a regular basis in case of a release of the new version. Let's discuss Java Features After Java 8. If you want to test some features without setting up Java environment in your system, kindly visit our free online java compiler & code runner. Java Features After Java 8 After Java

Java Core Tutorial

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In this section we will cover the basics of Java with clear and simple explanation. Here in this section we have covered concepts in the form of questions. Moreover, I am sure that these concepts will be beneficial to new developers & to those who are preparing for interviews. We will explore the fundamentals of Java, the basics, essential concepts, syntax, and practical examples to help you build a solid foundation. We will call this section 'Java Core Tutorials'. They are like must to know concepts for every Java professional. In addition, we have a separate section for Java Interview Questions. Java Core Tutorial Let's start learning basics of Core Java here in the article 'Java Core Tutorial'. Q: What is the history of Java?

How To Add JDK 18 Support in Eclipse

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Eclipse not recognizing Java-18, How to add JDK 18 support in Eclipse 2022-03?, jdk18 IDE , jdk18 eclipse, eclipse jdk18, eclipse java 18, java 18 eclipse, eclipse java 18 support, eclipse for java 18, JDK 18 support in Eclipse 2022-03 - java, add java 18 to eclipse, how to add java 18 to eclipse, eclipse openjdk 18, eclipse java 18 plugin, eclipse support java 18, jdk 18 eclipse, eclipse compiler compliance level 18 not available, sts java 18, add jdk 18 to eclipse, how to add jdk 18 in eclipse Oracle has released JDK 18 in March 2022 and it's general availability date is 2022/03/22. JDK 18 will be a short-term feature release that is supported for six months. However, JDK

How To Implement Spring Cloud Config Server In Microservices

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In a Microservices architecture based Java application, we have multiple microservices in the form of multiple Spring Boot applications. Each Spring Boot application will have its separate configuration file, where we specify the values in the form of key - value pairs. If you used maven in your application, you must have guessed that we are talking about nothing but application.properties file. You might have noticed that some of the entries in each application's application.properties file are common, such as registering with Eureka server, Email, Security, JPA configurations etc. If we can keep these common entries in one central place and make them accessible by each application, it will make our development process easier. Therefore, How can we make a central

How To Implement API Gateway Spring Boot In Microservices

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Microservices architecture offers us to deploy multiple services in different servers(hosts) in a private network. When a client request comes to microservices, it should get authenticated before the processing of request. Suppose we have 100 different services in a microservices based application. If client wants to interact with all of them, it will have to pass authentication 100 times. Reducing these many number of calls is one of the motivations to learn 'How To Implement API Gateway Spring Boot In Microservices'. If we have one service which takes care of authentication and also forward the request to concerned service, clients can get the response faster. Yes! We have such type of service which is responsible to do the same. It is

How to Design a Java Enterprise Application Effectively?

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This article is intended to experienced Java EE developers who desire to become the Architects of Enterprise applications in Java. It is also useful to the developers, designers, architects who want to create effective blueprints of applications. The title "How to Design a Java Enterprise Application Effectively?" will cover a lot of new demands with faster delivery in an enterprise application as moving fast is one of the most important criteria of today's IT companies. Moreover, we will discuss some best practices to design an enterprise application that suits the current demands. We will also cover the design comparison of Monolith with Microservices based application. Motivation to adapt Design as per Modern Applications Adapting design as per modern applications is all about quickly

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