Java Example

Hallo World
This is a minimal usage of Java, but it does not demonstrate object-oriented programming well. No object is explicitly created since the keyword new> is never used.

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

To execute this program, one first saves the above code as a file named Hello.java. One then compiles it to bytecode:

$ javac Hello.java

which produces a file named Hello.class . This class is then launched with the java launcher (usually named java, java.exe, or some variant depending on the operating system).

$ java Hello
Hello, World!

$