Hello World

Create HelloWorld.java file with the following

public class HelloWorld {

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

}

Compile it by

javac HelloWorld.java

Run it with:

java HelloWorld

Creating JAR file

In order to create JAR file one have to create Manifesto.txt with

Main-Class: HelloWorld

Then, one can create jar file with

jar cfm HelloWorld.jar Manifest.txt HelloWorld.class

and run it with

java -jar HelloWorld.jar