105 lines
3.7 KiB
Java
105 lines
3.7 KiB
Java
package com.example;
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import javax.swing.*;
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import java.awt.*;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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public class SalesProductManagement extends JFrame implements ActionListener {
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JButton btn1;
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JLabel lab1,lab2,lab3,lab4,lab5,lab6,lab7;
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JTextField text2,text3,text5,text6,text8,text9,text10;
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// JPasswordField passwordfile;
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JPanel panel1,panel2,panel3;
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SalesProductManagement(){
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super("销售信息管理");
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panel1 = new JPanel();
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panel2 = new JPanel();
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panel3 = new JPanel();
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lab1=new JLabel("名称",JLabel.CENTER);
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lab2=new JLabel("单价",JLabel.CENTER);
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lab3=new JLabel("数量",JLabel.CENTER);
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lab4=new JLabel("总计：",JLabel.CENTER);
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lab5=new JLabel("苹果",JLabel.CENTER);
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lab6=new JLabel("香蕉",JLabel.CENTER);
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lab7=new JLabel("橘子",JLabel.CENTER);
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text2=new JTextField("2"+"元",JTextField.CENTER);
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text3=new JTextField(3);
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text5=new JTextField("3"+"元",JTextField.CENTER);
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text6=new JTextField(3);
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text8=new JTextField("5"+"元",JTextField.CENTER);
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text9=new JTextField(3);
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text10=new JTextField(5);
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btn1=new JButton("结算");
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btn1.addActionListener(this);
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add(panel1);
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panel1.setLayout(new GridLayout(1,3,5,5));
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panel1.add(lab1);
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panel1.add(lab2);
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panel1.add(lab3);
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panel1.setMaximumSize(new Dimension(Integer.MAX_VALUE, 40));
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add(panel2);
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panel2.setLayout(new GridLayout(3,3,5,5));
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panel2.add(lab5);
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panel2.add(text2);
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panel2.add(text3);
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panel2.add(lab6);
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panel2.add(text5);
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panel2.add(text6);
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panel2.add(lab7);
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panel2.add(text8);
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panel2.add(text9);
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panel2.setMaximumSize(new Dimension(Integer.MAX_VALUE, 120));
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add(panel3);
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panel3.setLayout(new GridLayout(1,3,5,5));
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panel3.add(btn1);
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panel3.add(lab4);
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panel3.add(text10);
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panel3.setMaximumSize(new Dimension(Integer.MAX_VALUE, 40));
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setLayout(new GridLayout(3,1));
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setSize(500,500);
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setLocationRelativeTo(null);
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setVisible(true);
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}
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@Override
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public void actionPerformed(ActionEvent e) {
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// 判断事件源是否为结算按钮
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if (e.getSource() == btn1) {
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try {
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// 获取单价（从文本框提取数字部分）
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double applePrice = Double.parseDouble(text2.getText().replace("元", ""));
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double bananaPrice = Double.parseDouble(text5.getText().replace("元", ""));
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double orangePrice = Double.parseDouble(text8.getText().replace("元", ""));
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// 获取数量（处理空输入情况）
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int appleCount = text3.getText().trim().isEmpty() ? 0 : Integer.parseInt(text3.getText().trim());
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int bananaCount = text6.getText().trim().isEmpty() ? 0 : Integer.parseInt(text6.getText().trim());
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int orangeCount = text9.getText().trim().isEmpty() ? 0 : Integer.parseInt(text9.getText().trim());
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// 计算总金额
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double total = (applePrice * appleCount) + (bananaPrice * bananaCount) + (orangePrice * orangeCount);
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// 显示结果，保留两位小数
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text10.setText(String.format("%.2f元", total));
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} catch (NumberFormatException ex) {
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// 处理输入非数字的情况
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JOptionPane.showMessageDialog(this, "请输入有效的数字", "输入错误", JOptionPane.ERROR_MESSAGE);
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}
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}
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}
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public static void main(String[] args) {
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new SalesProductManagement();
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}
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}
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