/*First Udemity tutorial*/ /*"Hello world tutorial"*/ /*to compile Java file type "javac tutorial_1.java" in command line*/ /*this will create Java file "tutorial_1.class"*/ /*to execute Java program type "java tutorial_1" in command line*/ public class tutorial_1 { public static void main(String[] args) { System.out.println("Hello World!"); System.out.println("Java rocks dude!"); } }