getpanel.java

供初学者学习用的JBUILDER制作的非常简单的信用卡管理系统

package card;

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


public class getPanel extends JPanel {
  JLabel jLabel2 = new JLabel();
  JButton jButton2 = new JButton();
  JButton jButton1 = new JButton();
  JLabel jLabel1 = new JLabel();
  JTextField jTextField1 = new JTextField();
  JLabel jLabel3 = new JLabel();
  private String CardID;
  private String UserName;
  JLabel jLabel4 = new JLabel();

  public getPanel(String Name,String ID) {
    try {
      UserName = Name;
      CardID = ID;
      jbInit();
    }
    catch(Exception ex) {
      ex.printStackTrace();
    }
  }
  void jbInit() throws Exception {
    jLabel3.setBounds(new Rectangle(39, 94, 108, 34));
    jLabel3.setFont(new java.awt.Font("Dialog", 1, 20));
    jLabel3.setForeground(Color.blue);
    jLabel3.setText("支取金额：");
    jTextField1.setBounds(new Rectangle(147, 93, 102, 35));
    jTextField1.setText("");
    jTextField1.setFont(new java.awt.Font("Dialog", 1, 20));
    jTextField1.setSelectionStart(11);
    jLabel1.setBounds(new Rectangle(40, 40, 112, 39));
    jLabel1.setFont(new java.awt.Font("Dialog", 1, 20));
    jLabel1.setForeground(Color.blue);
    jLabel1.setText("用 户 名：");
    jButton1.setText("确定");
    jButton1.addActionListener(new getPanel_jButton1_actionAdapter(this));
    jButton1.setBounds(new Rectangle(39, 158, 85, 29));
    jButton1.setFont(new java.awt.Font("Dialog", 1, 20));
    jButton1.setForeground(Color.blue);
    jButton2.setText("重置");
    jButton2.addActionListener(new getPanel_jButton2_actionAdapter(this));
    jButton2.setBounds(new Rectangle(147, 159, 82, 27));
    jButton2.setFont(new java.awt.Font("Dialog", 1, 20));
    jButton2.setForeground(Color.blue);
    jButton2.setHorizontalAlignment(SwingConstants.CENTER);
    jLabel2.setBounds(new Rectangle(147, 42, 105, 37));
    jLabel2.setFont(new java.awt.Font("Dialog", 1, 20));
    jLabel2.setForeground(Color.blue);
    jLabel2.setText(UserName);
    this.setLayout(null);
    jLabel4.setFont(new java.awt.Font("Dialog", 1, 20));
    jLabel4.setForeground(Color.blue);
    jLabel4.setText("");
    jLabel4.setBounds(new Rectangle(37, 203, 230, 39));
    this.add(jLabel2, null);
    this.add(jTextField1, null);
    this.add(jLabel1, null);
    this.add(jLabel3, null);
    this.add(jButton2, null);
    this.add(jButton1, null);
    this.add(jLabel4, null);
  }

  void jButton1_actionPerformed(ActionEvent e) {
    try {
      Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
      String url = "jdbc:odbc:creditCard";
      Connection con = DriverManager.getConnection(url, "", "");
      Statement stat = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
                                           ResultSet.CONCUR_UPDATABLE);
      String sql = "update card set LeaveMoney = LeaveMoney + -" +
           Float.parseFloat(jTextField1.getText().trim()) + " where CardID = '" +
          CardID+"'";
      stat.executeUpdate(sql);
      jTextField1.setText("");
      con.close();
      stat.close();
      jLabel4.setText("取款成功！");

    }
    catch (Exception ex){
      System.out.print(ex.getMessage());
    }
  }

  void jButton2_actionPerformed(ActionEvent e) {
    jTextField1.setText("");
  }
}



class getPanel_jButton1_actionAdapter implements java.awt.event.ActionListener {
  getPanel adaptee;

  getPanel_jButton1_actionAdapter(getPanel adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}

class getPanel_jButton2_actionAdapter implements java.awt.event.ActionListener {
  getPanel adaptee;

  getPanel_jButton2_actionAdapter(getPanel adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton2_actionPerformed(e);
  }
}