JOptionPane.showMessageDialog(null, "message");

A Demo Program for using JOptionPane

import javax.swing.*;

import java.awt.event.*;
import java.awt.*;

public class OptionDemo extends JFrame
{
 JButton jbtnInput,jbtnMessage,jbtnSelect;
 JFrame f=this;
 OptionDemo()
 {
  super("Option Demo");
  setSize(700,500);
  setResizable(true);
  setDefaultCloseOperation(3);
  Container c=getContentPane();
  setLayout(new FlowLayout());

  jbtnInput=new JButton("Input");
  jbtnInput.addActionListener(new ActionListener()
  {
   public void actionPerformed(ActionEvent ae)
   {
    Object options[]={"Option 1","Option 2","Option 3"};
    JOptionPane.showInputDialog(f,"Select a Name","Title",JOptionPane.PLAIN_MESSAGE,null,options,"Select Option");
   }
  });
  c.add(jbtnInput);

  jbtnSelect=new JButton("Confirm");
  jbtnSelect.addActionListener(new ActionListener()
  {
   public void actionPerformed(ActionEvent ae)
   {

    JOptionPane.showConfirmDialog(f, "message", "title", JOptionPane.YES_NO_OPTION);
   }
  });
  c.add(jbtnSelect);

  jbtnMessage=new JButton("Message");
  jbtnMessage.addActionListener(new ActionListener()
  {
   public void actionPerformed(ActionEvent ae)
   {

    JOptionPane.showMessageDialog(f, "message");
   }
  });
  c.add(jbtnMessage);

  setVisible(true);
 }

 public static void main(String[] args)
 {
  try
  {
   UIManager.setLookAndFeel(new com.jtattoo.plaf.hifi.HiFiLookAndFeel());
  }
  catch (Exception e)
  {
   e.printStackTrace();
  }
  new OptionDemo();
 }
}