作业5 四则运算 测试与封装 5.1

我这次的结对伙伴是：罗林杰 博客：http://www.cnblogs.com/yihou2ni/

在这次结对任务中，我跟我的结对伙伴各自负责写白盒、黑盒的测试。类的封装是一起合作完成的。

1.第一阶段目标 - 把计算的功能封装成类。

mySize.java

package packageClass;

import java.util.*;

import java.awt.*;



import javax.swing.*;



import java.awt.event.*;

public class mySize extends JFrame implements ActionListener{

    JLabel L1,L2,L3,L4,Feedback,Questions; 

    JTextField inputtext,answertxet; 

    JButton SkinButton,NextBotton,EnterBotton,FactBotton;

    int number,i,n,op,count=0,backcolor=0;

    int d1,d2, d3;

    double result;

    boolean Factorial=false;Core core = new Core();

    public mySize()

    {

        super("四则运算");

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        setSize(400,250);

        this.setLocationRelativeTo(null);

        L1=new JLabel("输入出题数:");

        L2=new JLabel("题目:");

        L3=new JLabel("输入答案:");

        L4=new JLabel("反馈信息:");

        Feedback=new JLabel(" ");

        SkinButton=new JButton("换肤");

        NextBotton=new JButton("下一题");

        EnterBotton=new JButton("提交答案");FactBotton=new JButton("阶乘运算");

        Questions=new JLabel(" ");

        inputtext=new JTextField(10);

        answertxet=new JTextField(10);

        inputtext.addActionListener(this);

        answertxet.addActionListener(this);

        SkinButton.addActionListener(this);

        NextBotton.addActionListener(this);EnterBotton.addActionListener(this);FactBotton.addActionListener(this);

        GridLayout layout=new GridLayout(7,2);

        getContentPane().setLayout(layout);

        getContentPane().setBackground(Color.white);

        L1.setHorizontalAlignment(L1.RIGHT);

        L2.setHorizontalAlignment(L2.RIGHT);

        L3.setHorizontalAlignment(L3.RIGHT);

        L4.setHorizontalAlignment(L4.RIGHT);

        Feedback.setHorizontalAlignment(Feedback.CENTER);

        Questions.setHorizontalAlignment(Feedback.CENTER);

        inputtext.setHorizontalAlignment(inputtext.CENTER);

        add(L1);add(inputtext);

        add(L2);add(Questions);

        add(L3);add(answertxet);

        add(L4);add(Feedback);

        add(EnterBotton);add(NextBotton);add(SkinButton);add(FactBotton);

        setVisible(true);

        setResizable(false);

    }



    public static void main(String[] args)



    {

        mySize frame=new mySize();

    }

    

    public void actionPerformed(ActionEvent e){

        if(e.getSource()==inputtext)

        {

            

            String str=inputtext.getText();Feedback.setText("");

            boolean isAllDigit = true;//定义一个boolean值，用来表示是否包含其他字符

            for(int i=0 ;i<str.length(); i++)//循环遍历字符串   

                if(!Character.isDigit(str.charAt(i))){isAllDigit=false;}//用char包装类中的判断数字的方法判断每一个字符

            if(isAllDigit)

            {

                number=Integer.parseInt(str);

                if(number<6&&number>0)

                {    

                result=core.creatQuestion(Questions,d1,d2,d3,op);

                }

                else

                    Feedback.setText("出题数限制在5以内");

            }

            else

                Feedback.setText("错误！！输入数据含有其他字符!");

        }        

        

        else if(e.getSource()==EnterBotton||e.getSource()==answertxet){

            String str=answertxet.getText();Feedback.setText("");

            

                double a=Double.parseDouble(str);

                if(Factorial==false){

                    if(count<core.CorrectNum(a,result))

                    {

                    count=core.CorrectNum(a,result) ;

                    Feedback.setText("答案正确！请继续做题。");

                    }

                    else

                        Feedback.setText("答错了！正确答案："+String.format("%.2f",result)); 

               }

                else

                {

                if(a==core.Factorial(d1)){Feedback.setText("答案正确!");}

                else

                Feedback.setText("答错了！正确答案为"+core.Factorial(d1));

                Factorial=false;

                }

            

            }

        

        else if(e.getSource()==SkinButton){

            switch(backcolor)

            {

            case 0:this.getContentPane().setBackground(Color.red);break;

            case 1:this.getContentPane().setBackground(Color.black);break;

            case 2:this.getContentPane().setBackground(Color.white);break;

            case 3:this.getContentPane().setBackground(Color.yellow);break;

            case 4:this.getContentPane().setBackground(Color.blue);break;

            case 5:this.getContentPane().setBackground(Color.GREEN);break;

            }

            backcolor++;

            backcolor=backcolor%6;

        }

        else if(e.getSource()==FactBotton){

            d1=(int) (Math.random()*10);

            L2.setText("题目:");Questions.setText(d1+"!");    Factorial=true;inputtext.setText("");answertxet.setText("");Feedback.setText("");

        }

        else if(e.getSource()==NextBotton){

            

            if(number>1)

            {

                number--;

                    result=core.creatQuestion(Questions,d1,d2,d3,op);

                    answertxet.setText("");Feedback.setText("");            

            }

            else

                Feedback.setText("题目已答完，答对"+count+"题");

        }

    }

}

View Code

core.java

package packageClass;



import javax.swing.JLabel;

import javax.swing.JTextField;



public class Core {

    static double result=0;

    static int count=0;

    

    public int Factorial(int a)

    {

        int i,sum=1;

        for(i=1;i<=a;i++)

        {

            sum=sum*i;

        }

        return sum;

    }

    

    public double creatQuestion(JLabel Questions,int d1,int d2,int d3,int op) {

            op=(int) (Math.random()*5);

            d1=(int) (Math.random()*200-100);

            d2=(int) (Math.random()*200-100);

            d3=(int) (Math.random()*200-100);

            switch(op)

            {

            case 0:result=(d1+d2*d3);

                if(d2<0&&d3<0)Questions.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")×("+String.valueOf(d3)+")=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")×"+String.valueOf(d3)+"=");

                else if (d2>0&&d3>0)Questions.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"×"+String.valueOf(d3)+"=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"×("+String.valueOf(d3)+")=");break;

            case 1:result=(d1+(double)d2/d3);

                if(d2<0&&d3<0)Questions.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")÷("+String.valueOf(d3)+")=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")÷"+String.valueOf(d3)+"=");

                else if (d2>0&&d3>0)Questions.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"÷"+String.valueOf(d3)+"=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"÷("+String.valueOf(d3)+")=");break;

            case 2:result=(d1-d2*d3);

                if(d2<0&&d3<0)Questions.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")×("+String.valueOf(d3)+")=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")×"+String.valueOf(d3)+"=");

                else if (d2>0&&d3>0)Questions.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"×"+String.valueOf(d3)+"=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"×("+String.valueOf(d3)+")=");break;

            case 3:result=(d1-(double)d2/d3);

                if(d2<0&&d3<0)Questions.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")÷("+String.valueOf(d3)+")=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")÷"+String.valueOf(d3)+"=");

                else if (d2>0&&d3>0)Questions.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"÷"+String.valueOf(d3)+"=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"÷("+String.valueOf(d3)+")=");break;

            case 4:result=((d1*d2)/(double)d3);

                if(d2<0&&d3<0)Questions.setText(String.valueOf(d1)+"×("+String.valueOf(d2)+")÷("+String.valueOf(d3)+")=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"×("+String.valueOf(d2)+")÷"+String.valueOf(d3)+"=");

                else if (d2>0&&d3>0)Questions.setText(String.valueOf(d1)+"×"+String.valueOf(d2)+"÷"+String.valueOf(d3)+"=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"×"+String.valueOf(d2)+"÷("+String.valueOf(d3)+")=");break;

            } return result;

        }

    

    public int CorrectNum(double a,double result) {

                            if(Math.abs(a-result)<0.01){

                                count++;

                                }

                            else

                                {

                                }

                         return count;

    }

    

    

    }

 

2.设计测试用例：用白盒与黑盒测试设计技术，为计算核心设计测试用例。

 白盒测试：

  一、逻辑覆盖法

黑盒测试：

1.验证阶乘，四则运算等功能的正确性及容错功能

 

3.在实验环境中（如MyEclipse集成开发环境+Junit测试框架）运行测试用例，分析测试结果，找出程序问题，给出改进前后的代码对照。

测试用例：

package packageClass;



import static org.junit.Assert.*;



import javax.swing.JLabel;



import org.junit.Before;

import org.junit.Test;



public class CoreTest {

    private static Core calculate = new Core();

    @Before

    public void setUp() throws Exception {

        

    }



    @Test

    public void testFactorial() {

         assertEquals(2, calculate.Factorial(2));//验证阶乘的正确性

    }



    @Test

    public void testCreatQuestion() {

        



        assertEquals(21, (int)calculate.creatQuestion(3, 4, 5, 0));



    }



    @Test

    public void testCorrectNum() {

        assertEquals(1,calculate.CorrectNum(7, 7));

    }



}

 

 

程序修改前：

import java.util.*;

import java.math.*;

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

public class SiZi extends JFrame implements ActionListener{

    JLabel L1,L2,L3,L4,L5,Ltimu;

    JTextField inputtext,answertxet;

    JButton B1,B2,B3,B4;

    int number,i,n,op,tid=1,count=0,backcolor=0,jieflag=0;

    int d1,d2, d3;

    public SiZi()

    {

        super("四则运算");

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        setSize(400,250);

        this.setLocationRelativeTo(null);

        L1=new JLabel("输入出题数:");

        L2=new JLabel("题目:");

        L3=new JLabel("输入答案:");

        L4=new JLabel("反馈信息:");

        L5=new JLabel(" ");

        B1=new JButton("换肤");

        B2=new JButton("下一题");

        B3=new JButton("提交答案");B4=new JButton("阶乘运算");

        Ltimu=new JLabel(" ");

        inputtext=new JTextField(10);

        answertxet=new JTextField(10);

        inputtext.addActionListener(this);

        answertxet.addActionListener(this);

        B1.addActionListener(this);

        B2.addActionListener(this);B3.addActionListener(this);B4.addActionListener(this);

        GridLayout layout=new GridLayout(7,2);

        getContentPane().setLayout(layout);

        getContentPane().setBackground(Color.white);

        L1.setHorizontalAlignment(L1.RIGHT);

        L2.setHorizontalAlignment(L2.RIGHT);

        L3.setHorizontalAlignment(L3.RIGHT);

        L4.setHorizontalAlignment(L4.RIGHT);

        L5.setHorizontalAlignment(L5.CENTER);

        Ltimu.setHorizontalAlignment(L5.CENTER);

        inputtext.setHorizontalAlignment(inputtext.CENTER);

        add(L1);add(inputtext);

        add(L2);add(Ltimu);

        add(L3);add(answertxet);

        add(L4);add(L5);

        add(B3);add(B2);add(B1);add(B4);

        setVisible(true);

        setResizable(false);

    }

    

    public static void main(String[] args)



    {

        SiZi frame=new SiZi();

    }

    



    public void actionPerformed(ActionEvent e){

        if(e.getSource()==inputtext)

        {

            String str=inputtext.getText();L5.setText("");

            boolean isAllLetter = true;//定义一个boolean值，用来表示是否不含包含数字

            for(int i=0 ; i<str.length() ; i++)//循环遍历字符串   

                if(!Character.isDigit(str.charAt(i))){   //用char包装类中的判断数字的方法判断每一个字符

                    isAllLetter = false;

                }

            if(isAllLetter){

                number=Integer.parseInt(str);n=number;

                if(number>0&&number<6)

                {

                    op=(int) (Math.random()*5);

                    d1=(int) (Math.random()*200-100);

                    d2=(int) (Math.random()*200-100);

                    d3=(int) (Math.random()*200-100);

                    switch(op)

                    {

                    case 0:

                        if(d2<0&&d3<0)Ltimu.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")×("+String.valueOf(d3)+")=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")×"+String.valueOf(d3)+"=");

                        else if (d2>0&&d3>0)Ltimu.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"×"+String.valueOf(d3)+"=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"×("+String.valueOf(d3)+")=");break;

                    case 1:

                        if(d2<0&&d3<0)Ltimu.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")÷("+String.valueOf(d3)+")=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")÷"+String.valueOf(d3)+"=");

                        else if (d2>0&&d3>0)Ltimu.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"÷"+String.valueOf(d3)+"=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"÷("+String.valueOf(d3)+")=");break;

                    case 2:

                        if(d2<0&&d3<0)Ltimu.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")×("+String.valueOf(d3)+")=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")×"+String.valueOf(d3)+"=");

                        else if (d2>0&&d3>0)Ltimu.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"×"+String.valueOf(d3)+"=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"×("+String.valueOf(d3)+")=");break;

                    case 3:

                        if(d2<0&&d3<0)Ltimu.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")÷("+String.valueOf(d3)+")=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")÷"+String.valueOf(d3)+"=");

                        else if (d2>0&&d3>0)Ltimu.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"÷"+String.valueOf(d3)+"=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"÷("+String.valueOf(d3)+")=");break;

                    case 4:

                        if(d2<0&&d3<0)Ltimu.setText(String.valueOf(d1)+"×("+String.valueOf(d2)+")÷("+String.valueOf(d3)+")=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"×("+String.valueOf(d2)+")÷"+String.valueOf(d3)+"=");

                        else if (d2>0&&d3>0)Ltimu.setText(String.valueOf(d1)+"×"+String.valueOf(d2)+"÷"+String.valueOf(d3)+"=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"×"+String.valueOf(d2)+"÷("+String.valueOf(d3)+")=");break;

                        }    

                    tid=1;count=0;

                    L2.setText("题目"+tid+": ");

                    }

                else

                L5.setText("出题数限制在5以内");

                }

            else

                L5.setText("错误！！输入数据含有其他字符!");

            }

        

        else if(e.getSource()==B3||e.getSource()==answertxet){

            String str=answertxet.getText();L5.setText("");

            boolean isAllLetter = true;//定义一个boolean值，用来表示是否不含包含数字

            for(int i=0 ; i<str.length() ; i++)//循环遍历字符串   

                if(!Character.isDigit(str.charAt(i))){   //用char包装类中的判断数字的方法判断每一个字符

                    isAllLetter = false;

                }

            if(isAllLetter){

            double a=Double.parseDouble(str);

            if(jieflag==0){

                switch(op)

                {

                case 0:

                    if(d1+(d2*d3)==a){

                        L5.setText("答案正确！请继续做题。");

                        count++;

                        }

                    else{

                        L5.setText("答错了！正确答案："+(d1+d2*d3));

                        };break;

                        case 1:

                            if(Math.abs(a-((d1+d2)/(double)d3))<0.01){

                                L5.setText("答案正确！请继续做题。");

                                count++;

                                }

                            else{

                                L5.setText("答错了！正确答案为："+String.format("%.2f", (d1+(double)d2/d3))); 

                                };break;

                                case 2:

                                    if((d1-(d2*d3))==a){

                                        L5.setText("答案正确！请继续做题。");

                                        count++;

                                        }

                                    else{

                                        L5.setText("答错了！正确答案为："+(d1-d2*d3));

                                        };break;

                                        case 3:

                                            if(Math.abs(a-((d1-d2)/(double)d3))<0.01){

                                                L5.setText("答案正确！请继续做题。");

                                                count++;

                                                }

                                            else{

                                                L5.setText("答错了！正确答案为："+String.format("%.2f", (d1-(double)d2/d3)));

                                                };break;

                                                case 4:

                                                    if(Math.abs(a-((d1*d2)/(double)d3))<0.01){

                                                        L5.setText("答案正确！请继续做题。");

                                                        count++;

                                                        }

                                                    else{

                                                        L5.setText("答错了！正确答案为："+String.format("%.2f", (d1*(double)d2/d3)));

                                                        };break;

                                                        }

                }

            else

            {

                int i,sum=1;

                for(i=1;i<=d1;i++){

                    sum=sum*i;

                }

                if(a==sum){L5.setText("答案正确!");}

                else

                L5.setText("答错了！正确答案为"+sum);

                jieflag=0;

            }

        }

        else

            L5.setText("错误！！输入数据含有其他字符!");}

        

        

        else if(e.getSource()==B1){

            switch(backcolor)

            {

            case 0:this.getContentPane().setBackground(Color.red);break;

            case 1:this.getContentPane().setBackground(Color.black);break;

            case 2:this.getContentPane().setBackground(Color.white);break;

            case 3:this.getContentPane().setBackground(Color.yellow);break;

            case 4:this.getContentPane().setBackground(Color.blue);break;

            case 5:this.getContentPane().setBackground(Color.GREEN);break;

            }

            backcolor++;

            backcolor=backcolor%6;

        }

        else if(e.getSource()==B4){

            d1=(int) (Math.random()*10);

            L2.setText("题目:");Ltimu.setText(d1+"!");    jieflag=1;inputtext.setText("");answertxet.setText("");L5.setText("");

        }

        else if(e.getSource()==B2){

            

            if(n>1)

            {

                n--;

                    op=(int) (Math.random()*5);

                    d1=(int) (Math.random()*200)-100;

                    d2=(int) (Math.random()*200)-100;

                    d3=(int) (Math.random()*200)-100;

                    switch(op)

                     {

                    case 0:

                        if(d2<0&&d3<0)Ltimu.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")×("+String.valueOf(d3)+")=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")×"+String.valueOf(d3)+"=");

                        else if (d2>0&&d3>0)Ltimu.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"×"+String.valueOf(d3)+"=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"×("+String.valueOf(d3)+")=");break;

                    case 1:

                        if(d2<0&&d3<0)Ltimu.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")÷("+String.valueOf(d3)+")=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")÷"+String.valueOf(d3)+"=");

                        else if (d2>0&&d3>0)Ltimu.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"÷"+String.valueOf(d3)+"=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"÷("+String.valueOf(d3)+")=");break;

                    case 2:

                        if(d2<0&&d3<0)Ltimu.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")×("+String.valueOf(d3)+")=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")×"+String.valueOf(d3)+"=");

                        else if (d2>0&&d3>0)Ltimu.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"×"+String.valueOf(d3)+"=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"×("+String.valueOf(d3)+")=");break;

                    case 3:

                        if(d2<0&&d3<0)Ltimu.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")÷("+String.valueOf(d3)+")=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")÷"+String.valueOf(d3)+"=");

                        else if (d2>0&&d3>0)Ltimu.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"÷"+String.valueOf(d3)+"=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"÷("+String.valueOf(d3)+")=");break;

                    case 4:

                        if(d2<0&&d3<0)Ltimu.setText(String.valueOf(d1)+"×("+String.valueOf(d2)+")÷("+String.valueOf(d3)+")=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"×("+String.valueOf(d2)+")÷"+String.valueOf(d3)+"=");

                        else if (d2>0&&d3>0)Ltimu.setText(String.valueOf(d1)+"×"+String.valueOf(d2)+"÷"+String.valueOf(d3)+"=");

                        else if (d2<0&&d3>0)Ltimu.setText(String.valueOf(d1)+"×"+String.valueOf(d2)+"÷("+String.valueOf(d3)+")=");break;

                     }

                    tid++;

                    L2.setText("题目"+tid+": ");

                    answertxet.setText("");L5.setText("");            

            }

            else

                L5.setText("题目已答完，答对"+count+"题,答错"+(number-count)+"题");

        }

    }

}

View Code

 

程序修改后： 

package packageClass;

import java.util.*;

import java.awt.*;



import javax.swing.*;



import java.awt.event.*;

public class mySize extends JFrame implements ActionListener{

    JLabel L1,L2,L3,L4,Feedback,Questions; 

    JTextField inputtext,answertxet; 

    JButton SkinButton,NextBotton,EnterBotton,FactBotton;

    int number,i,n,op,tid=1,count=0,backcolor=0;

    int d1,d2, d3;

    double result;

    boolean Factorial=false;Core core = new Core();

    public mySize()

    {

        super("四则运算");

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        setSize(400,250);

        this.setLocationRelativeTo(null);

        L1=new JLabel("输入出题数:");

        L2=new JLabel("题目:");

        L3=new JLabel("输入答案:");

        L4=new JLabel("反馈信息:");

        Feedback=new JLabel(" ");

        SkinButton=new JButton("换肤");

        NextBotton=new JButton("下一题");

        EnterBotton=new JButton("提交答案");FactBotton=new JButton("阶乘运算");

        Questions=new JLabel(" ");

        inputtext=new JTextField(10);

        answertxet=new JTextField(10);

        inputtext.addActionListener(this);

        answertxet.addActionListener(this);

        SkinButton.addActionListener(this);

        NextBotton.addActionListener(this);EnterBotton.addActionListener(this);FactBotton.addActionListener(this);

        GridLayout layout=new GridLayout(7,2);

        getContentPane().setLayout(layout);

        getContentPane().setBackground(Color.white);

        L1.setHorizontalAlignment(L1.RIGHT);

        L2.setHorizontalAlignment(L2.RIGHT);

        L3.setHorizontalAlignment(L3.RIGHT);

        L4.setHorizontalAlignment(L4.RIGHT);

        Feedback.setHorizontalAlignment(Feedback.CENTER);

        Questions.setHorizontalAlignment(Feedback.CENTER);

        inputtext.setHorizontalAlignment(inputtext.CENTER);

        add(L1);add(inputtext);

        add(L2);add(Questions);

        add(L3);add(answertxet);

        add(L4);add(Feedback);

        add(EnterBotton);add(NextBotton);add(SkinButton);add(FactBotton);

        setVisible(true);

        setResizable(false);

    }



    public static void main(String[] args)



    {

        mySize frame=new mySize();

    }

    

    public void actionPerformed(ActionEvent e){

        if(e.getSource()==inputtext)

        {

            

            String str=inputtext.getText();Feedback.setText("");

            boolean isAllDigit = true;//定义一个boolean值，用来表示是否包含其他字符

            for(int i=0 ;i<str.length(); i++)//循环遍历字符串   

                if(!Character.isDigit(str.charAt(i))){isAllDigit=false;}//用char包装类中的判断数字的方法判断每一个字符

            if(isAllDigit)

            {

                number=Integer.parseInt(str);

                if(number<6&&number>0)

                {    

                result=core.creatQuestion(Questions,d1,d2,d3,op);

                }

                else

                    Feedback.setText("出题数限制在5以内");

            }

            else

                Feedback.setText("错误！！输入数据含有其他字符!");

        }        

        

        else if(e.getSource()==EnterBotton||e.getSource()==answertxet){

            String str=answertxet.getText();Feedback.setText("");

            

                double a=Double.parseDouble(str);

                if(Factorial==false){

                    count=core.CorrectNum(a,result,Feedback) ;

               }

                else

                {

                if(a==core.Factorial(d1)){Feedback.setText("答案正确!");}

                else

                Feedback.setText("答错了！正确答案为"+core.Factorial(d1));

                Factorial=false;

                }

            

            }

        

        else if(e.getSource()==SkinButton){

            switch(backcolor)

            {

            case 0:this.getContentPane().setBackground(Color.red);break;

            case 1:this.getContentPane().setBackground(Color.black);break;

            case 2:this.getContentPane().setBackground(Color.white);break;

            case 3:this.getContentPane().setBackground(Color.yellow);break;

            case 4:this.getContentPane().setBackground(Color.blue);break;

            case 5:this.getContentPane().setBackground(Color.GREEN);break;

            }

            backcolor++;

            backcolor=backcolor%6;

        }

        else if(e.getSource()==FactBotton){

            d1=(int) (Math.random()*10);

            L2.setText("题目:");Questions.setText(d1+"!");    Factorial=true;inputtext.setText("");answertxet.setText("");Feedback.setText("");

        }

        else if(e.getSource()==NextBotton){

            

            if(number>1)

            {

                number--;

                    result=core.creatQuestion(Questions,d1,d2,d3,op);

                    answertxet.setText("");Feedback.setText("");            

            }

            else

                Feedback.setText("题目已答完，答对"+count+"题");

        }

    }

}

View Code

package packageClass;



import javax.swing.JLabel;

import javax.swing.JTextField;



public class Core {

    static double result=0;

    static int count=0;

    

    public int Factorial(int a)

    {

        int i,sum=1;

        for(i=1;i<=a;i++)

        {

            sum=sum*i;

        }

        return sum;

    }

    

    public double creatQuestion(JLabel Questions,int d1,int d2,int d3,int op) {

            op=(int) (Math.random()*5);

            d1=(int) (Math.random()*200-100);

            d2=(int) (Math.random()*200-100);

            d3=(int) (Math.random()*200-100);

            switch(op)

            {

            case 0:result=(d1+d2*d3);

                if(d2<0&&d3<0)Questions.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")×("+String.valueOf(d3)+")=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")×"+String.valueOf(d3)+"=");

                else if (d2>0&&d3>0)Questions.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"×"+String.valueOf(d3)+"=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"×("+String.valueOf(d3)+")=");break;

            case 1:result=(d1+(double)d2/d3);

                if(d2<0&&d3<0)Questions.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")÷("+String.valueOf(d3)+")=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"+("+String.valueOf(d2)+")÷"+String.valueOf(d3)+"=");

                else if (d2>0&&d3>0)Questions.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"÷"+String.valueOf(d3)+"=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"+"+String.valueOf(d2)+"÷("+String.valueOf(d3)+")=");break;

            case 2:result=(d1-d2*d3);

                if(d2<0&&d3<0)Questions.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")×("+String.valueOf(d3)+")=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")×"+String.valueOf(d3)+"=");

                else if (d2>0&&d3>0)Questions.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"×"+String.valueOf(d3)+"=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"×("+String.valueOf(d3)+")=");break;

            case 3:result=(d1-(double)d2/d3);

                if(d2<0&&d3<0)Questions.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")÷("+String.valueOf(d3)+")=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"-("+String.valueOf(d2)+")÷"+String.valueOf(d3)+"=");

                else if (d2>0&&d3>0)Questions.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"÷"+String.valueOf(d3)+"=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"-"+String.valueOf(d2)+"÷("+String.valueOf(d3)+")=");break;

            case 4:result=((d1*d2)/(double)d3);

                if(d2<0&&d3<0)Questions.setText(String.valueOf(d1)+"×("+String.valueOf(d2)+")÷("+String.valueOf(d3)+")=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"×("+String.valueOf(d2)+")÷"+String.valueOf(d3)+"=");

                else if (d2>0&&d3>0)Questions.setText(String.valueOf(d1)+"×"+String.valueOf(d2)+"÷"+String.valueOf(d3)+"=");

                else if (d2<0&&d3>0)Questions.setText(String.valueOf(d1)+"×"+String.valueOf(d2)+"÷("+String.valueOf(d3)+")=");break;

            } return result;

        }

    

    public int CorrectNum(double a,double result,JLabel Feedback) {

        

                            if(Math.abs(a-result)<0.01){

                                Feedback.setText("答案正确！请继续做题。");

                                count++;

                                }

                            else

                                Feedback.setText("答错了！正确答案："+String.format("%.2f",result)); 

                         return count;

    }

    

    

    }

View Code