scan_goods.java~2~

超市管理系统,是学习JAVA的好例子啊！

package uml_gaokai;

import java.awt.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;
import com.borland.dx.sql.dataset.*;
import java.awt.event.*;
import java.sql.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: </p>
 * @author unascribed
 * @version 1.0
 */

public class Scan_Goods extends JDialog {
  private JPanel panel1 = new JPanel();
  private XYLayout xYLayout1 = new XYLayout();
  private JLabel jLabel1 = new JLabel();
  private JLabel jLabel2 = new JLabel();
  private JTextField jTextField1 = new JTextField();
  private JTextField jTextField2 = new JTextField();
  private JButton jButton1 = new JButton();
  private JButton jButton2 = new JButton();
  private Database database1 = new Database();

  public Scan_Goods(Frame frame, String title, boolean modal) {
    super(frame, title, modal);
    try {
      jbInit();
      pack();
    }
    catch(Exception ex) {
      ex.printStackTrace();
    }
  }

  public Scan_Goods() {
    this(null, "", false);
  }
  private void jbInit() throws Exception {
    panel1.setLayout(xYLayout1);
    jLabel1.setText("商品名");
    jLabel2.setText("商品ID");
    jButton1.setText("确定");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton1_actionPerformed(e);
      }
    });
    jButton2.setText("取消");
    database1.setConnection(new com.borland.dx.sql.dataset.ConnectionDescriptor("jdbc:odbc:gaokaiSQL", "sa", "", false, "sun.jdbc.odbc.JdbcOdbcDriver"));
    database1.setDatabaseName("");
    jTextField2.setToolTipText("");
    jTextField2.setText("0");
    getContentPane().add(panel1);
    panel1.add(jLabel1,   new XYConstraints(55, 34, 89, 27));
    panel1.add(jLabel2,   new XYConstraints(53, 83, 96, 30));
    panel1.add(jTextField2,   new XYConstraints(162, 83, 121, 32));
    panel1.add(jButton1, new XYConstraints(144, 169, 94, 25));
    panel1.add(jButton2,   new XYConstraints(258, 169, 95, 25));
    panel1.add(jTextField1, new XYConstraints(161, 34, 120, 32));
  }

  void jButton1_actionPerformed(ActionEvent e) {
    String GoodsName = String.valueOf(jTextField1.getText()) ;
    int GoodsID = Integer.parseInt(jTextField2.getText()) ;
    Statement sql = database1.createStatement() ;
    if( GoodsName == null && GoodsID == 0){
    JOptionPane.showMessageDialog(null,"请输入商品名或商品ID号，查询商品","",JOptionPane.DEFAULT_OPTION);}
  }
}