Hello World
Below is the source code for a traditional Hello World program.
Activity
- Try changing the message from
Hello World
to your name and click Run again. - If everything worked without an error, congratulations, you have just run your first Java program.
//This is a comment and will be ignored by the Java compiler //The program is fully editable //Try changing the 'Hello World, I'm a Java program' //to your name and click the Run button public class HelloWorld { //This is the main function of a Java program. public static void main (String[] args) { //The System.out.println() is used to print output to the console System.out.println("Hello World, I'm a Java program"); } }