diloagdemo.java

java课程的资料以及实验的代码

import javax.swing.*;
import java.awt.event.*;
class DialogDemo extends JFrame implements ActionListener
{
	JButton butt;
	DialogDemo()
	{
	butt=new JButton("ok");
	butt.addActionListener(this);
	this.add(butt);
	this.setSize(300,300);
	this.setVisible(true);	
	}
  public void actionPerformed(ActionEvent a)
  {
  	if(a.getSource()==butt)
  	JOptionPane.showMessageDialog(null,"你好");
  }
  public static void main(String args[])
  {
  	new DialogDemo();
  }	
	
}