example1_4.java

来自「北京邮电大学牛导的 JAVA课件课件及相关资料」· Java 代码 · 共 14 行

import javax.swing.JOptionPane;
public class Example1_4 {
    
    /** Creates a new instance of example1_4 */
   
    public static void main(String[] args) 
    {
        JOptionPane.showMessageDialog(null,"Welcome\nto\nJava!","Welcome",JOptionPane.INFORMATION_MESSAGE);
        System.exit(0);
        
    }
    
}