非常简单的JAVA编辑商场收银系统

import java.awt.Button; import java.awt.Label; import java.awt.TextArea; import java.awt.TextField; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JFrame; public class paylist implements ActionListener { private JFrame payFrame; private TextField wareTxt, numTxt, payTxt; private TextArea wareList; private Button appendBtn, sureBtn, cancelBtn, payBtn,pay1Btn, manageBtn, closeBtn,helpBtn; private Label suoxuan, geshu,fukuan; private String[] ware; private double[] warePrice; private double amountToPrice; private double payMoney, backMoney; private int front, rear; private frame frame; public paylist(){ ware = new String[50]; warePrice = new double[50]; payFrame = new JFrame("超市收银"); suoxuan = new Label("所选商品"); geshu = new Label("商品个数"); fukuan = new Label("付款金额:"); wareTxt = new TextField(10); numTxt = new TextField(3); payTxt = new TextField(); wareList = new TextArea(); appendBtn = new Button("添加"); sureBtn = new Button("确认"); cancelBtn = new Button("完成"); payBtn = new Button("付款"); pay1Btn = new Button("收银结算"); manageBtn = new Button("添加商品种类"); helpBtn = new Button("帮助"); closeBtn = new Button("退出"); appendBtn.addActionListener(this); sureBtn.addActionListener(this); cancelBtn.addActionListener(this); payBtn.addActionListener(this); pay1Btn.addActionListener(this); manageBtn.addActionListener(this); helpBtn.addActionListener(this); closeBtn.addActionListener(this); payFrame.setLayout(null); payFrame.add(wareTxt); payFrame.add(numTxt); payFrame.add(wareList); payFrame.add(appendBtn); payFrame.add(sureBtn); payFrame.add(cancelBtn); payFrame.add(suoxuan); payFrame.add(geshu); payFrame.add(fukuan); payFrame.add(pay1Btn); payFrame.add(payBtn); payFrame.add(manageBtn); payFrame.add(closeBtn); payFrame.add(helpBtn); payFrame.setLocation(350, 200); payFrame.setSize(430,400); suoxuan.setBounds(40, 50, 100, 20); geshu.setBounds(150, 50, 100, 20); fukuan.setBounds(30, 330,50,20); wareTxt.setBounds(40, 70, 100, 20); numTxt.setBounds(160, 70, 50, 20); payTxt.setBounds(90, 330, 60, 20); wareList.setBounds(40, 100, 240, 200); appendBtn.setBounds(230, 70, 50, 20); sureBtn.setBounds(180, 325, 50, 30); cancelBtn.setBounds(250, 325, 50, 30); payBtn.setBounds(180, 325, 50, 30); manageBtn.setBounds(10, 2, 80, 30); pay1Btn.setBounds(110, 2, 80, 30); helpBtn.setBounds(210, 2, 80, 30); closeBtn.setBounds(310, 2, 80, 30); payFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public void init(){ wareTxt.setText(""); numTxt.setText(""); } public void AppendList(String wareName){ for(int i=0;i<rear;i++){ if(ware[i].equals(wareName)){ wareList.append(ware[i]+" 数量："+numTxt.getText()+"单价："+warePrice[i]+"\n"); amountToPrice += warePrice[i]*Integer.parseInt(numTxt.getText()); //String 转换 int return; } } wareList.append("没有找到该商品\n"); } public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub if(e.getSource() == appendBtn){ AppendList(wareTxt.getText()); init(); } else if(e.getSource() == sureBtn){ wareList.append("总计金额： "+amountToPrice+"\n"); payFrame.add(payTxt); payFrame.remove(sureBtn); payFrame.add(payBtn); } else if(e.getSource() == cancelBtn){ payFrame.setVisible(false); frame.setframe(true); init(); }else { payMoney = Double.parseDouble(payTxt.getText()); backMoney = payMoney - amountToPrice; wareList.append("付款金额："+payMoney+" 找赎："+backMoney+"\n谢谢惠顾"); payFrame.remove(payBtn); payFrame.remove(payTxt); payFrame.add(sureBtn); } } public void setWare(String ware) { this.ware[rear] = ware; } public void setWarePrice(double warePrice) { this.warePrice[rear] = warePrice; } public void setRear(int rear) { this.rear += rear; } public void setPayFrame(boolean arg0) { this.payFrame.setVisible(arg0); } public void setframe(frame frame) { this.frame = frame; } }