Hello World Program in Java

Let us look at a simple code that will print the words Hello World.

Example

Online Demo

public class MyFirstJavaProgram {

   /* This is my first java program.
    * This will print 'Hello World' as the output
    */

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

Let's look at how to save the file, compile, and run the program. Please follow the subsequent steps −

• Open notepad and add the code as above.

• Save the file as − MyFirstJavaProgram.java.

• Open a command prompt window and go to the directory where you saved the class. Assume it's C:\.

• Type 'javac MyFirstJavaProgram.java' and press enter to compile your code. If there are no errors in your code, the command prompt will take you to the next line (Assumption − The path variable is set).

• Now, type ' java MyFirstJavaProgram ' to run your program.

• You will be able to see ' Hello World ' printed on the window.

Output

C:\> javac MyFirstJavaProgram.java
C:\> java MyFirstJavaProgram
Hello World