checkout.java

基于java+sql2000超市货品进销存管理

package supermarket;
import DB.*;
import javax.swing.*;
import java.awt.*;
import javax.swing.border.Border;
import javax.swing.border.TitledBorder;
import com.borland.jbcl.layout.XYLayout;
import com.borland.jbcl.layout.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.lang.NumberFormatException;
import java.awt.event.KeyEvent;
import java.awt.event.KeyAdapter;

public class Checkout
    extends JDialog {
  MainFrm fr;
  public Checkout(String shopname, boolean huiyuan, float zhek, float price,MainFrm fr) {
    try {
      this.fr=fr;
      jbInit();
      if (huiyuan) {
        if (zhek == 9.5) {
          shopname += "该会员为普通会员\n折扣率为：9.5折\n";
        }
        else {
          shopname += "该会员为高级会员\n折扣率为：9 折\n";
        }
      }
      this.price = price;
      shopname += "本次消费：" + price + "元";
      taxdisplay.setText(shopname);
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }
  }

  private void jbInit() throws Exception {
    lbltitle.setFont(new java.awt.Font("Dialog", Font.PLAIN, 25));
    lbltitle.setText("结          帐");
    lbltitle.setBounds(new Rectangle(137, 5, 127, 48));
    this.getContentPane().setLayout(null);
    txtmoney.setFont(new java.awt.Font("Dialog", Font.PLAIN, 20));
    txtmoney.setText("");
    txtmoney.setBounds(new Rectangle(27, 318, 379, 25));
    txtmoney.addKeyListener(new Checkout_txtmoney_keyAdapter(this));
    jButton1.setBounds(new Rectangle(319, 4, 85, 29));
    jButton1.setFont(new java.awt.Font("Dialog", Font.PLAIN, 18));
    jButton1.setText("找补");
    jButton1.addActionListener(new Checkout_jButton1_actionAdapter(this));
    jScrollPane1.setBounds(new Rectangle(26, 83, 380, 207));
    taxdisplay.setText("jTextArea1");
    this.setTitle("结帐");
    jPanel1.setBorder(BorderFactory.createEtchedBorder());
    jPanel1.setBounds(new Rectangle(5, 11, 432, 40));
    jPanel1.setLayout(null);
    jPanel2.setBorder(border4);
    jPanel2.setBounds(new Rectangle(5, 53, 432, 301));
    jPanel2.setLayout(null);
    jPanel3.setBorder(BorderFactory.createEtchedBorder());
    jPanel3.setBounds(new Rectangle(5, 351, 432, 33));
    jPanel3.setLayout(null);
    this.getContentPane().add(lbltitle, null);
    this.getContentPane().add(txtmoney);
    this.getContentPane().add(jScrollPane1);
    jScrollPane1.getViewport().add(taxdisplay);
    this.getContentPane().add(jPanel1);
    this.getContentPane().add(jPanel2);
    this.getContentPane().add(jPanel3);
    jPanel3.add(jButton1);
    txtmoney.setHorizontalAlignment(JTextField.RIGHT); //文本右对齐
    this.setModal(true);
  }

  JLabel lbltitle = new JLabel();
  Border border1 = BorderFactory.createEtchedBorder(Color.white,
      new Color(165, 163, 151));
  Border border2 = new TitledBorder(border1, "总汇");
  JTextField txtmoney = new JTextField();
  JButton jButton1 = new JButton();
  float price = 0;
  JScrollPane jScrollPane1 = new JScrollPane();
  JTextArea taxdisplay = new JTextArea();
  JPanel jPanel1 = new JPanel();
  JPanel jPanel2 = new JPanel();
  Border border3 = BorderFactory.createEtchedBorder(Color.white,
      new Color(148, 145, 140));
  Border border4 = new TitledBorder(border3, "清单");
  JPanel jPanel3 = new JPanel();
  public void jButton1_actionPerformed(ActionEvent e) {
    String money = txtmoney.getText().trim();
    if (money.equals("")) { //判断金额框是否为空
      JOptionPane.showMessageDialog(null, "请输入支付金额！", "错误",
                                    JOptionPane.ERROR_MESSAGE);
      return;
    }
    try {
      float my = Float.parseFloat(money);
      my -= price;
      if (my < 0) {//判断支付金额是否比消费金额少
        JOptionPane.showMessageDialog(null, "金额不足！", "错误",
                                      JOptionPane.ERROR_MESSAGE);
        return;
      }
      JOptionPane.showMessageDialog(null, "应找补:" + my + "元"); //找补提示
       fr.clear();
       this.dispose();//关闭当前

    }
    catch (NumberFormatException ex) { //确认金额输入是否正确
      JOptionPane.showMessageDialog(null, "请正确输入，金额不可以为：" + money, "错误",
                                    JOptionPane.ERROR_MESSAGE);
      return;
    }

  }


  public void txtmoney_keyPressed(KeyEvent e) {
if((int)e.getKeyChar()==10){
  jButton1_actionPerformed(null);
}
  }
}

class Checkout_txtmoney_keyAdapter
    extends KeyAdapter {
  private Checkout adaptee;
  Checkout_txtmoney_keyAdapter(Checkout adaptee) {
    this.adaptee = adaptee;
  }

  public void keyPressed(KeyEvent e) {
    adaptee.txtmoney_keyPressed(e);
  }
}

class Checkout_jButton1_actionAdapter
    implements ActionListener {
  private Checkout adaptee;
  Checkout_jButton1_actionAdapter(Checkout adaptee) {
    this.adaptee = adaptee;
  }

  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}