colorbuttonapplet2.java

来自「Java the UML Way 书中所有源码」· Java 代码 · 共 26 行

/*
 * ColorButtonApplet2.java  E.L. 2001-08-18
 *
 */
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ColorButtonApplet2 extends JApplet {
  private Container guiContainer;

  public void init() {
    guiContainer = getContentPane();
    guiContainer.setLayout(new FlowLayout());
    JButton myButton = new JButton("Push here!!");
    guiContainer.add(myButton);
    ButtonListener theButtonListener = new ButtonListener();
    myButton.addActionListener(theButtonListener);
  }

  private class ButtonListener implements ActionListener {
    public void actionPerformed(ActionEvent event) {
      guiContainer.setBackground(Color.red);
    }
  }
}