Java Install (Windows)
Install Java on Windows and set up environment variables properly.
OpenJDK link: [OpenJDK](https://openjdk.org/)
Eclipse Setup
Download and set up Eclipse IDE to create and run Java programs.
Eclipse download: [Eclipse](https://www.eclipse.org/downloads/)
VS Code Setup
Install VS Code and prepare it for Java development with extensions.
VS Code download: [VS Code](https://code.visualstudio.com/)
Install & Run Java (Linux)
Compile and run Java files in Linux and fix common setup errors.
error: can’t find main(String[]) method in class:
Install JDK on Linux (Ubuntu/Debian):
sudo apt update
sudo apt install openjdk-21-jdk