testbutton.java

来自「有关java的源程序,为讲授java程序设计课程使用」· Java 代码 · 共 34 行

import java.awt.*;
//import ButtonHandler;
import java.awt.event.*;


public class TestButton
{
	public static void main(String args[])
	{
		Frame f=new Frame("Test");
		Button b=new Button("Press");
		b.addActionListener(new ButtonHandler(f));
		f.setLayout(new FlowLayout());
		f.add(b);
		f.setSize(200,100);
		f.setVisible(true);
	}
}

class ButtonHandler implements ActionListener
{
	Frame frame;
	public ButtonHandler(Frame frm)
	{
		frame=frm;
	}
	public void actionPerformed(ActionEvent e)
	{
		System.out.println("Action");
		frame.setTitle("abcd");
	}
}