frame1.java

jbuilder2005

package buttontest;

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

public class Frame1
    extends JFrame {
  int n=0;              //定义变量n,用于计数
  JPanel contentPane;
  Button button1 = new Button();
  Label label1 = new Label();
  Button button2 = new Button();
  public Frame1() {
    try {
      setDefaultCloseOperation(EXIT_ON_CLOSE);
      jbInit();
    }
    catch (Exception exception) {
      exception.printStackTrace();
    }
  }

  /**
   * Component initialization.
   *
   * @throws java.lang.Exception
   */
  private void jbInit() throws Exception {
    contentPane = (JPanel) getContentPane();
    contentPane.setLayout(null);
    setSize(new Dimension(200, 100));
    setTitle("按钮计数器");
    button1.setLabel("加1");
    button1.setBounds(new Rectangle(26, 38, 56, 25));
    button1.addActionListener(new Frame1_button1_actionAdapter(this));
    label1.setAlignment(Label.CENTER);
    label1.setFont(new java.awt.Font("Dialog", Font.PLAIN, 24));
    label1.setText("0");
    label1.setBounds(new Rectangle(53, 6, 88, 32));
    button2.setLabel("清0");
    button2.setBounds(new Rectangle(112, 38, 56, 25));
    button2.addActionListener(new Frame1_button2_actionAdapter(this));
    contentPane.add(button2);
    contentPane.add(label1);
    contentPane.add(button1);
  }

  public void button1_actionPerformed(ActionEvent e) {
    n++;              //加1
    label1.setText(Integer.toString(n));  //将数值变为字符串，在标签上显示
  }

  public void button2_actionPerformed(ActionEvent e) {
    n=0;               //清0
    label1.setText(""+n);              //将数值连在字符串后，在标签上显示
  }
}

class Frame1_button2_actionAdapter
    implements ActionListener {
  private Frame1 adaptee;
  Frame1_button2_actionAdapter(Frame1 adaptee) {
    this.adaptee = adaptee;
  }

  public void actionPerformed(ActionEvent e) {
    adaptee.button2_actionPerformed(e);
  }
}

class Frame1_button1_actionAdapter
    implements ActionListener {
  private Frame1 adaptee;
  Frame1_button1_actionAdapter(Frame1 adaptee) {
    this.adaptee = adaptee;
  }

  public void actionPerformed(ActionEvent e) {
    adaptee.button1_actionPerformed(e);
  }
}