frame1.java

是用java开发的一些程序原代码 是用java开发的一些程序原代码

package ex05_12;

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

public class Frame1 extends JFrame {
  JPanel contentPane;
  JButton jButton1 = new JButton();
  JLabel jLabel1 = new JLabel();

  /**Construct the frame*/
  public Frame1() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  /**Component initialization*/
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(Frame1.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    jButton1.setText("计算总金额");
    jButton1.setBounds(new Rectangle(74, 21, 97, 29));
    jButton1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton1_actionPerformed(e);
      }
    });
    contentPane.setLayout(null);
    this.setSize(new Dimension(400, 300));
    this.setTitle("Frame Title");
    jLabel1.setFont(new java.awt.Font("Dialog", 0, 18));
    jLabel1.setForeground(Color.red);
    jLabel1.setText("总金额数目");
    jLabel1.setBounds(new Rectangle(72, 64, 111, 19));
    contentPane.add(jButton1, null);
    contentPane.add(jLabel1, null);
  }
  /**Overridden so we can exit when window is closed*/
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  void jButton1_actionPerformed(ActionEvent e) {
int goods;
double tax,money;
goods=5000; //商品定价
tax=0.05; //税率
money=goods*(1+tax); //含税总金额
jLabel1.setText(String.valueOf(money)+"元");
  }
}