Program Message Dialog di Java

Contoh program berikut ini menampilkan jenis-jenis window pesan di Java. Window pesan (message dialog) antara lain bertipe warning message, information message, confirmation message, dan juga input message. Class yang digunakan adalah class JOptionPane.

Source Code :

import java.awt.*;  import java.awt.event.*;  import javax.swing.*;  public class MessageDialog extends JFrame {  private JButton tombol, btn2, btn3, btn4, btn5;  public MessageDialog() {      super ("Event Handling");      Container container = getContentPane();      container.setLayout(new FlowLayout());      tombol = new JButton ("Message Dialog");      tombol.addActionListener(          new ActionListener() {              public void actionPerformed (ActionEvent e) {                  JOptionPane.showMessageDialog (null,"Contoh Message Dialog");              }          }      );      container.add(tombol);      btn2 = new JButton ("Warning Message");      btn2.addActionListener(          new ActionListener() {              public void actionPerformed (ActionEvent e) {                  JOptionPane.showConfirmDialog(null, "Contoh Warning Message","Peringatan",                      JOptionPane.CLOSED_OPTION, JOptionPane.WARNING_MESSAGE);              }          }      );      container.add(btn2);      btn3 = new JButton ("Question Message");      btn3.addActionListener(          new ActionListener() {              public void actionPerformed (ActionEvent e) {                  JOptionPane.showConfirmDialog(null, "Contoh Question Message","Pertanyaan",                      JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE);              }          }      );      container.add(btn3);      btn4 = new JButton ("Information Message");      btn4.addActionListener(          new ActionListener() {              public void actionPerformed (ActionEvent e) {                  JOptionPane.showConfirmDialog(null, "Contoh Information Message","Informasi",                      JOptionPane.NO_OPTION, JOptionPane.INFORMATION_MESSAGE);              }          }      );      container.add(btn4);      btn5 = new JButton ("Input Dialog");      btn5.addActionListener(          new ActionListener() {              public void actionPerformed (ActionEvent e) {                  String a = JOptionPane.showInputDialog("Input Nama : ");                  JOptionPane.showMessageDialog(null, a);              }          }      );      container.add(btn5);      setSize (200,300);      setLocationRelativeTo(null);      setVisible (true);  }  public static void main (String arg[]) {      MessageDialog test = new MessageDialog();      test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  } }

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