About Java

Java is a high-level, class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible. It is a general-purpose programming language intended to let application developers write once, run anywhere (WORA).

Syntax Help

Fundamentals

• All code must be inside a class: public class Main { }
• Main method: public static void main(String[] args) { }
• Lines end with a semicolon ;

Example:

public class Main {
    public static void main(String[] args) {
        System.out.println("Hello World");
    }
}

• Data Types: int, String, boolean, double...
• Output: System.out.println("Text");

Note

This is a client-side viewer. Full Java compilation requires a backend server. The Run button simulates output for demonstration.