第四次作業

import java.awt.*;

import java.awt.event.*;
import javax.swing.*;
class Test
{
public static void main(String[] args)
{
JFrame jtfMainFrame = new JFrame("Which Button Demo");
jtfMainFrame.setSize(450, 150);
JButton jbnButton1=new JButton("Button 1");
JButton jbnButton2 = new JButton("Button 2");
JPanel jplPanel = new JPanel();
jplPanel.add(jbnButton1);
jplPanel.add(jbnButton2);
jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
System.out.print("i");
}
}