Introduction to Java

Origin of Java:

Welcome to Introduction to Java. Let’s begin

In Introduction to Java, we will learn about its features and where and how it was developed.

James Gosling created Java at Sun Microsystems, and it was first released in May 1995 as a core component of Sun Microsystems’ Java platform. Sun originally released the original and reference implementation of Java compilers, virtual machines, and class libraries under proprietary licenses. However, Sun had relicensed most of its Java technologies under the GPL-2.0-only license as of May 2007. The official reference implementation is the OpenJDK JVM, which is free open-source software. It is the default JVM for almost all Linux distributions. Oracle offers its own HotSpot Java Virtual Machine, but the official reference implementation is the OpenJDK JVM, which is used by most developers and is the default JVM for almost all Linux distributions.


Furthermore, Java is an object-oriented programming language with a high level of abstraction and as few implementation dependencies as possible. It is a general-purpose programming language that allows programmers to write once and run anywhere (WORA), which means that Java code after compilation can run on any platform that supports Java without the need to recompile. [18] Java applications compile to bytecode. They can run on any Java virtual machine (JVM), regardless of the computer architecture. Java’s syntax is similar to C and C++, but it has fewer low-level features than either of these languages. Traditional compiled languages lack dynamic capabilities (such as reflection and runtime code modification), which the Java runtime provides. As of the year 2019,

Java is an extremely powerful all-purpose programming language. We use java to create desktop and mobile applications, as well as big data processing and embedded systems. Over 3 billion devices worldwide have Java, making it one of the most popular programming languages. This Java tutorial will walk you through the process of learning Java one step at a time.


One of Java’s design goals is portability. Java programs must run similarly on any combination of hardware and operating system with adequate run time support. Instead of compiling the Java language code directly to architecture-specific machine code. This is accomplished by compiling it to an intermediate representation known as Java bytecode. Java bytecode instructions are similar to machine code, but a Virtual machine tailored to the host hardware executes it. For standalone Java applications, end-users typically use a Java Runtime Environment (JRE) installed on their device or a web browser for Java applets.

Helpful Tools:

Here are some useful tools to help you along your journey!

Setting up an IDE (Integrated Development Environment) can be difficult for beginners. The Online Compiler will enable you to run your code inside your browser without installing an IDE. If you need a more detailed explanation of a specific topic, the best place to find answers is in the Official Documentation.

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