cardmoneypanel.java

用JBUILDER和SQL2

package bar;

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


/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class CardMoneyPanel extends JPanel {
  JLabel jLabel1 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JLabel jLabel3 = new JLabel();
  JLabel jLabel4 = new JLabel();
  private mainFrame Frame1;
  private Connection con;
  private int  CardID;


  public CardMoneyPanel(mainFrame mFrame1,int cardID) {
    try {
      Frame1 = mFrame1;
      CardID = cardID;
      jbInit();
    }
    catch(Exception ex) {
      ex.printStackTrace();
    }
  }
  void jbInit() throws Exception {
    jLabel1.setFont(new java.awt.Font("Serif", 1, 16));
    jLabel1.setHorizontalAlignment(SwingConstants.CENTER);
    jLabel1.setText("卡号：");
    jLabel1.setBounds(new Rectangle(83, 75, 71, 40));
    this.setLayout(null);
    jLabel2.setFont(new java.awt.Font("Serif", 1, 16));
    jLabel2.setText(Integer.toString(CardID));
    jLabel2.setBounds(new Rectangle(166, 80, 136, 34));
    jLabel3.setFont(new java.awt.Font("Serif", 1, 16));
    jLabel3.setHorizontalAlignment(SwingConstants.CENTER);
    jLabel3.setText("余额 ：");
    jLabel3.setBounds(new Rectangle(86, 153, 75, 35));
    jLabel4.setBounds(new Rectangle(165, 152, 136, 34));
    jLabel4.setText("");
    jLabel4.setFont(new java.awt.Font("Serif", 1, 16));
    this.add(jLabel1, null);
    this.add(jLabel2, null);
    this.add(jLabel3, null);
    this.add(jLabel4, null);
    con=barConnect.getconn();
    Statement  stmt=con.createStatement();
    ResultSet rs = stmt.executeQuery("select LeaveMoney from Card where CardID ="+CardID);
    rs.next();
    jLabel4.setText(rs.getString("LeaveMoney"));
     con.close();
  }
}