event source => listener

来源：互联网发布：mac的office软件怎么样编辑：程序博客网时间：2024/05/01 05:03

package HeadFirstJava;import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.*;public class SimpleGui {    JButton button;        public static void main(String[] args) {        SimpleGui gui = new SimpleGui();        gui.go();    }    public void go() {        JFrame frame = new JFrame();        button = new JButton("click me");        // event registration        // button is 'event source'        button.addActionListener(new ButtonListener());         frame.getContentPane().add(BorderLayout.EAST, button);        frame.setSize(300, 300);        frame.setVisible(true);    }    // listener class    class ButtonListener implements ActionListener {        @Override        public void actionPerformed(ActionEvent event) {            // TODO Auto-generated method stub            button.setText("Ouch");        }            }}

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