Java 算数测试小程序

TestFrame.java

 
 


  
  
import javax.swing.*;  

  
  
import java.awt.FlowLayout;  

  
  
import java.awt.event.*;   

  
  
 

  
  
public class TestFrame extends JFrame implements ActionListener   

  
  
{   

  
  
       JTextField textOne,textTwo,textResult;   

  
  
       JButton getProblem,giveAnwser;   

  
  
       JLabel operatorJLabel,message;   

  
  
       TestOperator testOperator;   

  
  
 

  
  
       public TestFrame()   

  
  
       {   

  
  
            testOperator=new TestOperator();   

  
  
            setLayout(new FlowLayout());   

  
  
            textOne=new JTextField(10); //创建textOne,其可见字符长是10   

  
  
            textTwo=new JTextField(10); //创建textTwo,其可见字符长是10   

  
  
            textResult=new JTextField(10); //创建textResult,其可见字符长是10   

  
  
            operatorJLabel=new JLabel("+");   

  
  
            message=new JLabel("你还没有回答呢");   

  
  
            getProblem=new JButton("获取题目");   

  
  
            giveAnwser=new JButton("确认答案");   

  
  
 

  
  
            add(getProblem);   

  
  
            add(textOne);   

  
  
            add(operatorJLabel);   

  
  
            add(textTwo);   

  
  
            add(new JLabel("="));   

  
  
            add(textResult);   

  
  
            add(giveAnwser);   

  
  
            add(message);   

  
  
 

  
  
            textOne.setEditable(false);   

  
  
            textTwo.setEditable(false);   

  
  
            getProblem.addActionListener(this);//当前窗口注册为getProblem的ActionEvent事件监视器   

  
  
            giveAnwser.addActionListener(this);//当前窗口注册为giveAnwser的ActionEvent事件监视器   

  
  
            textResult.addActionListener(this);//当前窗口注册为textResult的ActionEvent事件监视器   

  
  
       }   

  
  
       public void actionPerformed(ActionEvent e)   

  
  
      {   

  
  
           if(e.getSource()==getProblem) //判断事件源是否是getProblem   

  
  
          {   

  
  
            int number1=testOperator.giveNumberOne(100);              

  
  
            int number2=testOperator.giveNumberTwo(100);              

  
  
            String operator=testOperator.giveOperator();               

  
  
            textOne.setText(""+number1);               

  
  
            textTwo.setText(""+number2);               

  
  
            operatorJLabel.setText(operator);               

  
  
            message.setText("请回答");              

  
  
            textResult.setText(null);   

  
  
          }   

  
  
         if(e.getSource()==giveAnwser) //判断事件源是否是giveAnwser   

  
  
         {   

  
  
             String answer=textResult.getText();   

  
  
             

  
  
            try{ int result=Integer.parseInt(answer);   

  
  
                  

  
  
                if(testOperator.getRight(result)==true)  

  
  
                {   

  
  
                    message.setText("你回答正确");   

  
  
                }   

  
  
                else   

  
  
                {   

  
  
                    message.setText("你回答错误");   

  
  
                }   

  
  
              }   

  
  
            catch(NumberFormatException ex)   

  
  
               {   

  
  
                    message.setText("请输入数字字符");   

  
  
               }   

  
  
          }   

  
  
    }   

  
  
}  
 
 

TestOperator.java

 
 


  
  
public class TestOperator   

  
  
{   

  
  
     int numberOne,numberTwo;   

  
  
     String operator="";   

  
  
     boolean right;   

  
  
 

  
  
     //随机生成第一个数  

  
  
     public int giveNumberOne(int n)   

  
  
     {   

  
  
         numberOne=(int)(Math.random()*n)+1; //强制转换为int型  

  
  
                                             //因为Math.random()返回的为double型  

  
  
         return numberOne;   

  
  
     }   

  
  
 

  
  
    //随机生成第二个数  

  
  
     public int giveNumberTwo(int n)   

  
  
     {   

  
  
         numberTwo=(int)(Math.random()*n)+1;   

  
  
         return numberTwo;   

  
  
      }   

  
  
 

  
  
     //随机生成运算符号  

  
  
      public String giveOperator()   

  
  
      {  

  
  
         double d=Math.random();   

  
  
         if(d>=0&&d<0.25)   

  
  
            operator="+";   

  
  
 

  
  
         else if(d>0.25&&d<=0.5)  

  
  
             operator="-";   

  
  
           

  
  
         else if(d>0.5&&d<=0.75)           

  
  
             operator="*";   

  
  
           

  
  
         else               

  
  
             operator="/";   

  
  
           

  
  
         return operator;   

  
  
      }   

  
  
 

  
  
      //判断测试结果是否正确  

  
  
      public boolean getRight(int answer)   

  
  
      {   

  
  
          if(operator.equals("+"))   

  
  
          {  

  
  
               if(answer==numberOne+numberTwo)   

  
  
                  right=true;   

  
  
 

  
  
               else   

  
  
                  right=false;   

  
  
 

  
  
           }   

  
  
 

  
  
           else if(operator.equals("-"))   

  
  
          {   

  
  
               if(answer==numberOne-numberTwo)   

  
  
                  right=true;   

  
  
 

  
  
               else   

  
  
                   right=false;   

  
  
           }   

  
  
            

  
  
           else if(operator.equals("*"))   

  
  
           {   

  
  
               if(answer==numberOne*numberTwo)   

  
  
                  right=true;   

  
  
 

  
  
                else   

  
  
                   right=false;   

  
  
            }   

  
  
           else if(operator.equals("/"))   

  
  
           {   

  
  
               if(answer==numberOne/numberTwo)   

  
  
                  right=true;   

  
  
 

  
  
                else   

  
  
                   right=false;   

  
  
            }   

  
  
   return right;   

  
  
  }   

  
  
}   
 
 

MainClass.java

 
 


  
  
import javax.swing.JFrame;  

  
  
import javax.swing.UIManager;  

  
  
 

  
  
public class MainClass   

  
  
{      

  
  
       public static void main(String args[])   

  
  
       {      

  
  
           try {  

  
  
                 UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel"); //windows界面风格  

  
  
            } catch (Exception e) {  

  
  
                e.printStackTrace();  

  
  
            }  

  
  
           TestFrame frame=new TestFrame();  

  
  
           frame.setTitle("算数测试小程序");             

  
  
           frame.setBounds(100,100,500,100);   

  
  
           frame.setVisible(true);   

  
  
           frame.setLocationRelativeTo(null);//窗体居中显示  

  
  
           frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  

  
  
           frame.setResizable(false);  

  
  
       }   

  
  
}  
 
 

效果图：

本文转自 lingdududu 51CTO博客，原文链接：http://blog.51cto.com/liangruijun/628339