第4次作业类测试代码+105032014099+吴丹丹

一、类图

 

二、界面和相应的功能

输入不满足要求时，弹出提示框 

当三种配件的销售额一样时，显示三种配件销售额相同

三、代码

package test04;
import java.awt.Frame;
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.DecimalFormat;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;

public class MyJFrame{

    public static void main(String[] args) {
        JFrame f=new JFrame("手机配件佣金计算程序");    //实例化窗体对象
        
        //创建标签对象
        JLabel input = new JLabel("请输入销售的数量：");
        JLabel headphone = new JLabel("耳机：");
        JLabel shell = new JLabel("手机壳：");
        JLabel protector  = new JLabel("贴膜：");
        JLabel output1 = new JLabel("应返还的佣金：");
        JLabel output2 = new JLabel("销售额最高的配件是：");
        JLabel output3 = new JLabel("销售配件最多与最少数量相差：");
        
        //创建单行输入文本
        JTextField txt_headphone = new JTextField();
        JTextField txt_shell = new JTextField();
        JTextField txt_protector = new JTextField();
        JTextField txt_output1 = new JTextField();
        JTextField txt_output2 = new JTextField();
        JTextField txt_output3 = new JTextField();
        
        //创建按钮
        JButton btn_ok = new JButton("OK");
        JButton btn_cancel = new JButton("Cancel");
        
        //按钮监听事件
        btn_ok.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (e.getSource()==btn_ok) {
                    String headphoneN = txt_headphone.getText();
                    String shellN = txt_shell.getText();
                    String protectorN = txt_protector.getText();
                    Commission commission = new Commission();
                    
                    if(commission.isNumeric(headphoneN)&&commission.isNumeric(shellN)&&commission.isNumeric(protectorN))
                    {
                        DecimalFormat df=new DecimalFormat("#.0"); //限制输出佣金的小数点后的位数
                        
                        //转化为整型
                        int headphone = Integer.parseInt(headphoneN);
                        int shell = Integer.parseInt(shellN);
                        int protector = Integer.parseInt(protectorN);
                        
                        //计算结果
                        double output1 = commission.commission(headphone, shell, protector);
                        String output2 = commission.mostSale(headphone, shell, protector);
                        int output3 = commission.diffSale(headphone, shell, protector);
                        //输出结果
                        txt_output1.setText(String.valueOf(df.format(output1)));
                        txt_output2.setText(output2);
                        txt_output3.setText(String.valueOf(output3));
                    }else
                    {
                        JOptionPane.showMessageDialog(null, "输入有误，请重新输入！");
                        txt_headphone.setText("");
                        txt_shell.setText("");
                        txt_protector.setText("");
                    }
                }
            }
        });
        //Cancel按钮
        btn_cancel.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                txt_headphone.setText("");
                txt_shell.setText("");
                txt_protector.setText("");
                txt_output1.setText("");
                txt_output2.setText("");
                txt_output3.setText("");
            } 
        });
        
        //设置字体
        Font font = new Font("宋体", Font.BOLD, 12);
        Font font2 =new Font("宋体", Font.BOLD, 10);
        input.setFont(font);
        headphone.setFont(font);
        shell.setFont(font);
        protector.setFont(font);
        output1.setFont(font);
        output2.setFont(font);
        output3.setFont(font);
        txt_output1.setFont(font2);
        txt_output2.setFont(font2);
        txt_output3.setFont(font2);
        
        //设置颜色
        txt_output1.setSelectedTextColor(Color.black);
        txt_output2.setSelectedTextColor(Color.black);
        txt_output3.setSelectedTextColor(Color.black);
        
        //设置输出文本框不可编辑
        txt_output1.setEnabled(false);
        txt_output2.setEnabled(false);
        txt_output3.setEnabled(false);
        
        //设置组件位置及大小
        input.setBounds(13, -3, 186, 50);
        headphone.setBounds(14, 55, 54, 15);    
        shell.setBounds(137, 55, 54, 15);
        protector.setBounds(276, 55, 54, 15);
        output1.setBounds(18, 138, 115, 23);
        output2.setBounds(17, 179, 153, 23);
        output3.setBounds(17, 217, 241, 22);
        txt_headphone.setBounds(54, 54, 66, 21);
        txt_shell.setBounds(190, 54, 66, 21);
        txt_protector.setBounds(321, 52, 66, 21);
        txt_output1.setBounds(120, 140, 139, 23);
        txt_output2.setBounds(158, 177, 139, 23);
        txt_output3.setBounds(215, 217, 139, 23);
        btn_ok.setBounds(83, 93, 93, 23);
        btn_cancel.setBounds(215, 93, 93, 23);
        
        //添加组件
        f.add(input);
        f.add(headphone);
        f.add(shell);
        f.add(protector);
        f.add(btn_ok);
        f.add(btn_cancel);
        f.add(output1);
        f.add(output2);
        f.add(output3);
        f.add(txt_headphone);
        f.add(txt_shell);
        f.add(txt_protector);
        f.add(txt_output1);
        f.add(txt_output2);
        f.add(txt_output3);
        
        //设置窗体
        f.setLayout(null);
        f.setBackground(Color.WHITE);
        f.setSize(450, 300);     
        f.setLocation(300, 200);
        f.setVisible(true);    
    }
}

package test04;

public class Commission {
    //判断输入是否合法
    public final static boolean isNumeric(String s) { 
        if("".equals(s)||!(s.matches("^[0-9]*$"))||s.length()>8||s==null)
        {
        return false;
        }
        return true;
        }
    
    //计算佣金
    public double commission(int headphone,int shell,int protector)
    {   
        double commission=0;     //初始化佣金为0
        int headphone_price=80;  //耳机单价80；
        int shell_price=10;      //手机壳单价10；
        int protector_price=8;   //手机贴膜单价8；
        int total=headphone*headphone_price+shell*shell_price+protector*protector_price;
        
        if(total<1000&&total>0){            //销售额不足1000提取10%佣金
            commission=total*0.1;
        }else if(total<=1800){              //销售额在1000-1800，提取15%佣金
            commission=total*0.15;
        }else {                             //销售额大于1800提起20%佣金   
        commission=total*0.2;
        }
        return commission;
    }

    //销售额最高的配件
    public String mostSale(int headphone,int shell,int protector)
    {
        int headphoneSale = headphone*80;
        int shellSale = shell*10;
        int protectorSale = protector*8;
        
        String result="";
        int max=Math.max(Math.max(headphoneSale, shellSale), protectorSale);
        if (max==headphoneSale) 
        {
            result = "耳机";        
        }
        if (max==shellSale) 
        {
            result = "手机壳";
        }
        if (max==protectorSale) 
        {
            result = "贴膜";
        }
        if (max==headphoneSale&&max==shellSale) 
        {
            result = "耳机，手机壳";
        }
        if (max==headphoneSale&&max==protectorSale) 
        {
            result = "耳机，贴膜";
        }
        if (max==shellSale&&max==protectorSale) 
        {
            result = "手机壳，贴膜";
        }
        if (max==headphoneSale&&max==shellSale&&max==protectorSale) {
            result = "三种配件销售额相同";        
        }
        return result;
    }
        
    //计算销售配件最多与最少之差
    public int diffSale(int headphone, int shell, int protector)
    {
        int m=Math.max(Math.max(headphone, shell), protector); 
        int n=Math.min(Math.min(headphone, shell), protector); 
        return m-n;         
    }
}