Create a file named myJavaApp.java.
~]# touch myJavaApp.java
Add the following markup to myJavaApp.java.
public class myJavaApp {
public static void main(String[] args) {
System.out.println("Hello World");
}
}
Compile myJavaApp. This will create a new file named myJavaApp.class.
~]# javac myJavaApp.java
Execute myJavaApp, and "Hello World" should be displayed.
~]# java myJavaApp
Hello World