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Core Java

Singleton Design Pattern in Java with all Scenarios

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In this article, we will go through all the scenarios of the Singleton pattern to make it crystal clear. From the definition, it seems to be a very simple design pattern but when it comes to implementation, it creates a lot of implementation concerns. Also, the implementation of Java Singleton pattern has always been a controversial topic among developers. Here, we will learn about Singleton Design Pattern in Java with all Scenarios, different ways to implement Singleton design pattern and some of the best practices for its usage. Sometimes, we get the requirement for some classes to have exactly one instance. There are many occasions when we need only one instance of the Object and if we instantiate more than one,

Java Reference Tutorial For Young Programmers

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Java Reference Tutorial For Young Programmers by CodeMonkey Coding is probably a term you and your children may be hearing more often as time goes on. The term, for purposes of Java, refers to the process of writing computer programs and is becoming a more and more demanding skill in the job market. That makes it an important addition to the education curriculum for many years. Even very young kids can get a start with learning to code using age relevant websites like CodeMonkey. Besides preparing them adequately for their future, there are plenty of other reasons to teach coding to children. Using Java is an ideal introduction to the topic. This guide will take you through everything you need to

JVM Architecture and Class Loaders Java

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Being a java developer we should know the details of  'How a java class file gets processed by JVM internally'. In this article on 'JVM Architecture and Class Loaders Java' we will learn about how JVM handles a .class file and does the internal processing to generate the output. However It is just to remind you that the JVM(Java virtual Machine) is responsible to process the compiled .class file in byte-code form. In this article we will discuss about "JVM Architecture and Class Loaders Java". The Java Virtual Machine (JVM) is a key component of the Java platform, responsible for executing Java applications. Moreover, along with the internal processing of a class file we will also learn the internal Architecture of

Collection In Java

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Every Java developer should be aware of the importance of the Collection in Java. Needless to say, you can't develop an application in Java without using the Collections. Even, Java community also assumes that Collection in Java is the most important topic after Java language basics and OOPs Concepts. Therefore,  the Java Collections Framework becomes an essential component of the Java language that helps developers to manage data in an effective manner. Moreover, Collection in Java provides the best possible algorithms for common operations such as search, sort, and insert, which can improve the performance of a Java application effectively. In this article, we are going to learn all the basic and advanced concepts of Collection in Java. Moreover, you must

ChatGPT for Developers and Programmers

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Everybody in the world must have heard about the ChatGPT. Some of us have already started utilizing it in completing our day to day tasks. It has gained a popularity during the early days of its launch. No matter which area or industry you belong to, it is very useful in getting your task done promptly. Undoubtedly, it is a very handy tool for developers and programmers as well. Therefore, it becomes important to know its capabilities for developers and programmers. In this article, we will talk about 'ChatGPT for Developers and Programmers'. How to utilize ChatGPT for Developers and Programmers? ChatGPT can help us in several ways when it comes to writing code. We can take help of it on performing some

Lombok Spring Boot And Lombok Annotations

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While developing a project in Java, we tend to repeat the similar kind of code for each class we create. Such kind of repetitive code is generally called boilerplate code. Our next question might be like 'Can we get rid of such multiple lines of code in real time development?' Then answer of your question is simply 'Yes'. The next question should be 'How can we reduce such kind of boilerplate code?' Now the answer is 'with the help of Lombok API, some people call it Lombok Project'. However, as the title "Lombok Spring Boot and Lombok Annotations" suggests, our focus in this article will be on the Lombok API Annotations. Furthermore, the 'Lombok API' is highly being used in the

How To Add JDK 20 Support In Eclipse

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Eclipse not recognizing Java-20, How to add JDK 20 support in Eclipse 2023-03?, jdk20 IDE , jdk20 eclipse, eclipse jdk20, eclipse java 20, java 20 eclipse, eclipse java 20 support, eclipse for java 20, JDK 20 support in Eclipse 2023-03 - java, add java 20 to eclipse, how to add java 20 to eclipse, eclipse openjdk 20, eclipse java 20 plugin, eclipse support java 20, jdk 20 eclipse, eclipse compiler compliance level 20 not available, sts java 20, add jdk 20 to eclipse, how to add jdk 20 in eclipse Oracle has released JDK 20 (the eleventh six-month release) in March, 2023 and it's general availability date is 2023/03/21. JDK 20 will be a short-term feature release that is supported for

Sealed Class In Java

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Java has transformed remarkably over the years, introducing new features and enhancements to make the language more robust and secure. One such feature introduced in Java 15 as a preview is the 'sealed' keyword for classes and interfaces. It was included in Java 17 as a final feature. Sealed classes and interfaces provide improved control over the inheritance hierarchy. In this article, we will explore sealed class in Java & sealed interfaces, including their syntax, rules, code examples, and related concepts. What is a sealed keyword in Java? In Java, the sealed keyword is used to control and restrict the inheritance hierarchy of classes and interfaces. It allows us to specify which classes or interfaces are allowed to extend or implement a

Stream Java 9 Improvements

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Java Stream API became an important feature with the release of Java 8, enabling developers to perform functional-style operations on collections with comfort. Subsequently, Java 9 introduced a new set of improvements that additionally improved the capabilities of streams, making them even more powerful and developer-friendly. In this article, we will explore the stream java 9 improvements, including complete code examples, highlighting their advantages in writing cleaner, shorter, and effective code. Stream Java 9 Improvements Java 9 has introduced a set of improvements in Stream API methods to enhance its capabilities and making it more developer-friendly. Some of the major improvements are: 1) takeWhile() 2) dropWhile() 3) iterate() 4) ofNullable() Let's go through them one by one in the subsequent sections. takeWhile( ) The takeWhile() method is an enhancement

Exception Handling In Java MCQ

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Being a Java developer, you must be familiar with the importance of Exception handling in Java. Undoubtedly, Exception handling is the most important for you. You can’t imagine even a small project in Java without the implementation of Exception handling. Moreover, in order to work in an industry level project, you must have a good knowledge on Exception handling in Java. Apart from going through theoretical concepts multiple times, it is highly advisable that developers need much coding practice on Exception handling. In this article, we will be doing theoretical & code practice on ‘Exception handling in Java’ in the form of MCQs that are frequently asked in the interviews as well. Definitely, you must find this article beneficial whether it

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