Java Installation 

Java Architecture

Java Development Kit (JDK):

• The JDK provides tools needed to write Java programs, including the compiler javac, and tools like java (the interpreter) and javadoc.

Java Runtime Environment (JRE): 

• The JRE provides the libraries, Java Virtual Machine (JVM), and other components to run applications written in Java.

Java Virtual Machine (JVM): 

• The JVM is an abstract machine that enables your computer to run a Java program. When you run a Java program, the JVM translates the Java bytecode into native machine code.

ONLINE EDITORS OF JAVA

JDoodle

• Website: JDoodle
• Features: Supports multiple languages, allows sharing code snippets, has a collaborative mode for real-time coding with others.

Repl.it

• Website: Repl.it
• Features: Supports many languages, includes an integrated development environment (IDE), allows for real-time collaboration, and can deploy applications.

OnlineGDB

• Website: OnlineGDB
• Features: Supports debugging, offers multiple programming languages, includes a basic IDE, and allows you to save and share code.

OFFLINE EDITORS OF JAVA

Eclipse

• Website: Eclipse
• Features: Comprehensive IDE, strong plugin ecosystem, supports multiple languages, integrated debugging, and version control systems (VCS) integration.

IntelliJ IDEA

• Website: IntelliJ IDEA
• Features: Advanced code completion, intelligent refactoring, integrated VCS, built-in tools for web and enterprise development, and a large plugin repository. The Community Edition is free and open-source, while the Ultimate Edition is commercial.

Visual Studio Code (VS Code)

• Website: VS Code
• Features: Lightweight and highly customizable, supports Java through extensions (e.g., Java Extension Pack), integrated terminal, and VCS support.

  

 

For Windows

Step 1: Install Java JDK

1. Download the JDK:
   • Go to the Oracle JDK download page.
   • Download the installer for the latest version of JDK.

Install the JDK:

Run the downloaded installer.

Follow the installation wizard and complete the installation process.

By default, JDK will be installed in C:\Program Files\Java\jdk-[version].

Set up Environment Variables:

Right-click on This PC or My Computer and select Properties.

Click on Advanced system settings.

Click on Environment Variables.

Under System variables, click New and add a new variable:

Variable name: JAVA_HOME

Variable value: C:\Program Files\Java\jdk-[version]

Find the Path variable in the System variables section and click Edit.

Click New and add %JAVA_HOME%\bin.

Click OK to save the changes.

Step 2: Install STS

Spring Tool Suite (STS) is an Eclipse-based IDE that provides a superset of the Java EE distribution of Eclipse. Here are the steps to install STS:

Spring Tool Suite (STS) is an Eclipse-based IDE that provides a superset of the Java EE distribution of Eclipse. Here are the steps to install STS:

Step 1: Download STS

1. Visit the STS Download Page:
   • Go to the Spring Tool Suite download page.
2. Select the Version:
   • Choose the appropriate version for your operating system (Windows, macOS, Linux).

Step 2: Install STS

For Windows:

1. Extract the Downloaded ZIP File:
   • Locate the downloaded ZIP file (e.g., spring-tool-suite-4-4.x.x.RELEASE-e4.x-win32.win32.x86_64.zip).
   • Extract the contents to your desired installation directory.
2. Run STS:
   • Navigate to the extracted folder and find the SpringToolSuite4.exe file.
   • Double-click to launch STS.