testcolorbuttonapplication.java

来自「Java the UML Way 书中所有源码」· Java 代码 · 共 38 行

/*
 * TestColorButtonApplication.java  E.L. 2001-08-22
 */

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class ColorButtonApplication extends JFrame {
  private Container guiContainer;

  public ColorButtonApplication(String title) {
    super(title);
    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);
    }
  }
}

class TestColorButtonApplication {
  public static void main(String[] args) {
    ColorButtonApplication myWindow
        = new ColorButtonApplication("My Window");
    myWindow.pack();
    myWindow.setVisible(true);
    myWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }
}