javaeventsample.java

来自「金旭亮的java教案」· Java 代码 · 共 62 行

// Java core packages
import java.awt.*;
import java.awt.event.*;
   
// Java extension packages
import javax.swing.*;

public class JavaEventSample  extends JFrame 
{
	
	private JButton okDraw;
	
	private Container container;

	public JavaEventSample()
	{
		super("我的Java程序!");
		// set up GUI
        container = getContentPane();
        container.setLayout( new FlowLayout() );
		
		okDraw=new JButton("开始");
		//使用内部匿名类实现事件处理
		okDraw.addActionListener(
			new ActionListener()
			{
				public void actionPerformed(ActionEvent e)
				{
		
					JOptionPane.showMessageDialog(null,"你好！");
				}
			}
				);
		container.add(okDraw);
		
		
       	//给窗口增加关闭功能
		WindowListener w=new WindowAdapter()
		{
			public void windowClosing(WindowEvent e)
			{
				System.exit(0);
			}
		};
		this.addWindowListener(w);
		
	
	}

	public static void main( String args[] )
	{
		JavaEventSample window=new JavaEventSample();
		
		window.setSize(200,136);
		window.show();
	
	}
	

}