자바 Hello world

자바 Hello world

1 HelloWorld.java[ | ]

Java

Copy

public class HelloWorld {
   public static void main(String[] args) {
       System.out.println("Hello, world!");
   }
}

2 GUIHelloWorld.java[ | ]

Java

Copy

import javax.swing.JOptionPane;
 
public class GUIHelloWorld {
        public static void main(String[] args) {
                JOptionPane.showMessageDialog(null, "Hello, world!");
        }
}

3 같이 보기[ | ]