tianlijiao.java

一个简单的用JAVA编写的小学生算术题目的程序,兄弟们请用

import java.awt.*;import java.awt.event.*;
class Myframe extends Frame  implements ActionListener,ItemListener
{ 
 Label lab1,lab2,content, correctLab;Choice ch;
 TextField txt1; Checkbox radio1,radio2,radio3,radio4,check1;
 CheckboxGroup reply;
 Button btn1,btn2;
 int count;
 int add1[];int add2[];int correct[];char ope1[];String ope2[];int answer[][];String oo="=";String pp=".";
 double temp;boolean flag;
 public Myframe(String s)
  {
	super(s);	
	lab1=new Label("题号：");
	lab2=new Label("答案："); 
	txt1=new TextField();
	ch=new Choice();content=new Label("                  ");
    reply=new CheckboxGroup();
	radio1=new Checkbox("",false,reply); radio2=new Checkbox("",false,reply); 
    radio3=new Checkbox("",false,reply); radio4=new Checkbox("",false,reply); 
	check1=new Checkbox("帮助"); 		
	btn1=new Button("上一题");btn2=new Button("下一题");
	correctLab=new Label("                        ");
	correctLab.setVisible(false);
	add1=new int[10];add2=new int[10];	
	ope1=new char[10];ope2=new String[10];
	answer= new int[10][4];
	correct=new int[10];
    setLayout(null);setBackground(Color.yellow);//设置不同的背景
       btn1.setBackground(Color.pink);btn2.setBackground(Color.pink);//设置颜色
       add(lab1); lab1.setBounds(30,20,40,30);
       add(lab2); lab2.setBounds(230,20,40,30); //题目内容
       add(ch);   ch.setBounds(65,50,80,30);//下拉列表框
       add(txt1); txt1.setBounds(265,50,80,20);//选择答案显示的文本框
       add(content); content.setBounds(50,100,300,30);//帮助答案的显示
       add(radio1); radio1.setBounds(50,130,40,30);
       add(radio2); radio2.setBounds(100,130,40,30);
       add(radio3); radio3.setBounds(150,130,40,30);
       add(radio4); radio4.setBounds(200,130,40,30);
       add(check1); check1.setBounds(80,180,50,30);
       add(btn1); btn1.setBounds(200,250,80,25);
       add(btn2); btn2.setBounds(300,250,80,25);
       add(correctLab); correctLab.setBounds(135,180,150,30);
       txt1.addActionListener(this);	
       btn1.addActionListener(this);
       btn2.addActionListener(this);
	   radio1.addItemListener(this);
	   radio2.addItemListener(this);
	   radio3.addItemListener(this);
	   radio4.addItemListener(this);
	   ch.addItemListener(this);
	   check1.addItemListener(this);
	   for(int i=0;i<10;i++)
	    {
	 	  ch.add(String.valueOf(i+1));
	    }
       setSize(500,400);setVisible(true);
	   addWindowListener(new WindowAdapter()//实现窗体的关闭
       {public void windowClosing(WindowEvent e)
          { System.exit(0);setVisible(false);
          } 
       }); 	    
	   rad();answer();Trueanswer();
	   content.setText(String.valueOf(ch.getSelectedIndex()+1)+pp+"       "+String.valueOf(add1[0])+ope2[0]+String.valueOf(add2[0])+oo);
	   radio1.setLabel(String.valueOf(answer[0][0]));
       radio2.setLabel(String.valueOf(answer[0][1]));
       radio3.setLabel(String.valueOf(answer[0][2]));
	   radio4.setLabel(String.valueOf(answer[0][3]));
	   btn1.setEnabled(false);	   
	   validate();
   }
public void rad()//产生随机数
  { 
	for(int i=0;i<10;i++)
    {
       add1[i]=(int)(100*Math.random())+1;
       add2[i]=(int)(100*Math.random())+1;
        correct[i]=add1[i]+add2[i];
      if(Math.random()>0.5)
      {
        ope1[i]='-';
        ope2[i]="-";
      }
      else
      {
        ope1[i]='+';
        ope2[i]="+";
      }
      //ch.add(String.valueOf(i+1));
    }
    for(int i=0;i<10;i++)
    {
      switch(ope1[i])
      {
        case '+':
			correct[i]=add1[i]+add2[i];		     
             break;
        case '-':
		   if (add1[i]>add2[i])
		   {
			correct[i]=add1[i]-add2[i];
		   }		   
		   else
		  {
            correct[i]=add2[i]-add1[i];
		  }
         break;
      }
    }
  }
public void answer()   //产生答案
 { 
	for(int i=0;i<10;i++) 
    {
      int max;
      int temp;
      boolean flag=false;
      max=correct[i];
      if(max>100)
      {
        max=200;
      }
      else if(max>10)
      {
        max=100;
      }
      else 
      {
        max=10;
      }      
      for(int j=0;j<4;j++)
      {
        temp=(int)(max*Math.random())+1;
        int k=0;
        while(k<j)
        {
          if(temp==answer[i][k++])
          { 
           temp=(int)(max*Math.random())+1;
          } 
        }
        answer[i][j]=temp;
      }
    }
 }
 public void Trueanswer()//正确答案
  {
	for(int i=0;i<10;i++)
    {
      temp=Math.random();
      flag=false;
      for(int j=0;j<4;j++)
      {
        if(answer[i][j]==correct[i])
        {
          flag=true;
        }
      }
      if(flag) continue;
      if(temp<=0.25)
      {
        answer[i][0]=correct[i];
      }
      else if(temp>0.25&&temp<=0.5)
      {
       answer[i][1]=correct[i];
      }
      else if(temp>0.5&&temp<=0.75)
      {
        answer[i][2]=correct[i];
	  }
      else
      {
        answer[i][3]=correct[i];
      }
    }
   } 
public void actionPerformed(ActionEvent e)
  {int temp=ch.getSelectedIndex();int count;
   if(e.getSource()==btn1)
    {
      ch.select(--temp);
      count=temp;
      content.setText(String.valueOf(ch.getSelectedIndex()+1)+pp+"       "+String.valueOf(add1[temp])+ope2[temp]+String.valueOf(add2[temp])+oo);
      radio1.setLabel(String.valueOf(answer[temp][0]));
      radio2.setLabel(String.valueOf(answer[temp][1]));
      radio3.setLabel(String.valueOf(answer[temp][2]));
	  radio4.setLabel(String.valueOf(answer[temp][3]));	
	  if (count==0)
	  {
		  btn1.setEnabled(false);
	  }
      btn2.setEnabled(true);
      txt1.setText("");      
      check1.setState(false);
      correctLab.setVisible(false);
    }
    if(e.getSource()==btn2)
    {
      ch.select(++temp);
      count=temp;
	  content.setText(String.valueOf(ch.getSelectedIndex()+1)+pp+"       "+String.valueOf(add1[temp])+ope2[temp]+String.valueOf(add2[temp])+oo);
      radio1.setLabel(String.valueOf(answer[temp][0]));
      radio2.setLabel(String.valueOf(answer[temp][1]));
      radio3.setLabel(String.valueOf(answer[temp][2]));
	  radio4.setLabel(String.valueOf(answer[temp][3]));	
	  if (count==9)
	  {
		  btn2.setEnabled(false);
	  }
       btn1.setEnabled(true);  
      txt1.setText("");
      check1.setState(false);
      correctLab.setVisible(false);     
    }
    count=temp;
    //setKey();
    if(e.getSource()==txt1)
    {
      String name=txt1.getText();
      if(name.equals(radio1.getLabel()))
      {
       radio1.setState(true);
      }
      if(name.equals(radio2.getLabel()))
      {
       radio2.setState(true);
      }
      if(name.equals(radio3.getLabel()))
      {
       radio3.setState(true);
      }
      if(name.equals(radio4.getLabel()))
      {
       radio4.setState(true);
      }
    } 
  }
public void itemStateChanged(ItemEvent e)
{
  if(e.getItemSelectable()==ch)
    {
      int temp=ch.getSelectedIndex();
      count=temp;   
	  content.setText(String.valueOf(ch.getSelectedIndex()+1)+pp+"       "+String.valueOf(add1[temp])+ope2[temp]+String.valueOf(add2[temp])+oo);
      radio1.setLabel(String.valueOf(answer[temp][0]));
      radio2.setLabel(String.valueOf(answer[temp][1]));
      radio3.setLabel(String.valueOf(answer[temp][2]));
	  radio4.setLabel(String.valueOf(answer[temp][3]));			  
	}		 
      //setKey();
	  if (count==0)
	  {
		  btn1.setEnabled(false);
	  } 
       else
	    {btn1.setEnabled(true);
	    }
	  if (count==9)
	    { btn2.setEnabled(false);
	    }
       else 
	    {btn2.setEnabled(true);
	    }
      txt1.setText("");
      check1.setState(false);
      //correctLab.setVisible(false);    
    if(e.getItemSelectable()==radio1)
    {
      txt1.setText(radio1.getLabel());
    }
    if(e.getItemSelectable()==radio2)
    {
      txt1.setText(radio2.getLabel());
    }
    if(e.getItemSelectable()==radio3)
    {
      txt1.setText(radio3.getLabel());
    }
    if(e.getItemSelectable()==radio4)
    {
      txt1.setText(radio4.getLabel());
    }
    if(e.getItemSelectable()==check1)
    {
      if(e.getStateChange()==e.SELECTED)
      {
         int temp;
         correctLab.setVisible(true);
         temp=ch.getSelectedIndex();
         correctLab.setText("正确答案是："+String.valueOf(correct[temp]));
      }
      else if(e.getStateChange()==e.DESELECTED)
      {
        correctLab.setVisible(false);
      }
    }
  }
}
public class tianlijiao
{
  public static void main(String args[])
   {
     Myframe dl=new Myframe("  ");
   }
}