作业五 四则元算 测试与封装
未封装的程序：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Size {
public static void main(String[] args) {
// TODO Auto-generated method stub
myframe f=new myframe();
}
}
class myframe extends JFrame
{
JLabel L1=new JLabel("题目:");
JLabel L2=new JLabel("输入题目个数:");
JLabel L3=new JLabel("提示:");
JLabel L4=new JLabel(" "); //题目
JLabel L5=new JLabel("题目个数不能大于5"); //提示
JTextField T1=new JTextField(6);
JButton B1=new JButton("开始");
JButton B2=new JButton("确认");
JButton B3=new JButton("下一题");
JButton B4=new JButton("换皮肤");
JPanel p1=new JPanel();
int n=0,a,b,c,d,j,k,l,m=0,p;
double result;
char[]h={'+','-','*','/'},h1={'(',')','!'};
String s1,s2;
Color col[]={Color.blue,Color.green,Color.ORANGE,Color.PINK,Color.GRAY,Color.RED,Color.LIGHT_GRAY};
myframe(){
this.setTitle("四则运算");
this.setSize(300,280);
this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
this.add(p1);
p1.setLayout(null);
L1.setBounds(50, 20, 90, 30);
p1.add(L1);
L4.setBounds(140, 20, 150, 30);
p1.add(L4);
L2.setBounds(50, 70, 90, 30);
p1.add(L2);
T1.setBounds(150, 70, 90, 30);
p1.add(T1);
B4.setBounds(100, 110, 90, 30);
p1.add(B4);
B1.setBounds(10, 150, 90, 30);
p1.add(B1);
B2.setBounds(100, 150, 90, 30);
p1.add(B2);
B2.setEnabled(false);
B3.setBounds(190, 150,90,30);
p1.add(B3);
L3.setBounds(50, 200, 50, 30);
B3.setEnabled(false);
p1.add(L3);
L5.setBounds(100, 200, 180, 30);
p1.add(L5);
this.setVisible(true);
this.setLocationRelativeTo(null);
B1.addActionListener(new B());
B2.addActionListener(new B());
B3.addActionListener(new B());
B4.addActionListener(new B());
}
class B implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource()==B1)
{
p=n=(int) Double.parseDouble(T1.getText());
//System.out.print(n);
if(n>5||n<1)
{
JOptionPane.showMessageDialog(null,"输入的个数不能大于5或者小于1","注意",JOptionPane.INFORMATION_MESSAGE);
}
else
{
B1.setEnabled(false);
B2.setEnabled(true);
B3.setEnabled(true);
L2.setText("输入答案 :");
L5.setText(null);
T1.setText(null);
star();
}
}
if(e.getSource()==B2)
{
l=(int) Double.parseDouble(T1.getText());
if(l==result)
{
m++;
s2="答案正确！";
L5.setText(s2);
}
else{
s2="答案错误!答案为:"+String.valueOf(result);
L5.setText(s2);
}
B2.setEnabled(false);
}
if(e.getSource()==B3)
{
if(n==0)
{
JOptionPane.showMessageDialog(null, "一共"+p+"道题目。正确的题数为:"+m,"成绩",JOptionPane.INFORMATION_MESSAGE);
B1.setEnabled(true);
B2.setEnabled(false);
B3.setEnabled(false);
L2.setText("输入题目个数:");
L4.setText(null);
T1.setText(null);
}
else
{
L5.setText(null);
T1.setText(null);
star();
B2.setEnabled(true);
}
}
if(e.getSource()==B4)
{
int i;
i=(int)(Math.random()*6);
p1.setBackground(col[i]);
}
}
}
void star()
{
a=(int) (Math.random()*10);
b=(int) (Math.random()*10);
c=(int) (Math.random()*10);
d=(int) (Math.random()*10);
j=(int) (Math.random()*4);
k=(int) (Math.random()*4);
if(d<0)
{
a=(int) (Math.random()*9+1);
s1=String.valueOf(a)+String.valueOf(h1[2]);
L4.setText(s1);
result=1;
for(int i=1;i<=a;i++)
{
result=result*i;
}
}
else
{
if(b>=0&&c>=0)
{
s1=String.valueOf(a)+String.valueOf(h[j])+String.valueOf(b)+String.valueOf(h[k])+String.valueOf(c);
L4.setText(s1);
System.out.println(s1);
}
else if(b<0&&c>=0)
{
s1=String.valueOf(a)+String.valueOf(h[j])+String.valueOf(h1[0])+String.valueOf(b)+String.valueOf(h1[1])+String.valueOf(h[k])+String.valueOf(c);
L4.setText(s1);
System.out.println(s1);
}
else if(b>=0&&c<0)
{
s1=String.valueOf(a)+String.valueOf(h[j])+String.valueOf(b)+String.valueOf(h[k])+String.valueOf(h1[0])+String.valueOf(c)+String.valueOf(h1[1]);
L4.setText(s1);
System.out.println(s1);
}
else
{
s1=String.valueOf(a)+String.valueOf(h[j])+String.valueOf(h1[0])+String.valueOf(b)+String.valueOf(h1[1])+String.valueOf(h[k])+String.valueOf(h1[0])+String.valueOf(c)+String.valueOf(h1[1]);
L4.setText(s1);
System.out.println(s1);
}
if(k>1) //后面的计算符为乘除，先算后面两个数
{
if(k==2)
{
result=b*c;
}
else if(k==3)
{
result=b/c;
}
if(j==0)
{
result=result+a;
}
else if(j==1)
{
result=a-result;
}
else if(j==2)
{
result=a*result;
}
else if(j==3)
{
result=a/result;
}
}
else if(k<2)
{
if(j==0)
{
result=b+a;
}
else if(j==1)
{
result=a-b;
}
else if(j==2)
{
result=a*b;
}
else if(j==3)
{
result=a/b;
}
if(k==0)
result=result+c;
if(k==1)
result=result-c;
}
}
System.out.println(result);
n--;
}
}
封装后的程序：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Size {
public static void main(String[] args) {
// TODO Auto-generated method stub
myframe f=new myframe();
}
}
class myframe extends JFrame
{
JLabel L1=new JLabel("题目:");
JLabel L2=new JLabel("输入题目个数:");
JLabel L3=new JLabel("提示:");
JLabel L4=new JLabel(" "); //题目
JLabel L5=new JLabel("题目个数不能大于5"); //提示
JTextField T1=new JTextField(6);
JButton B1=new JButton("开始");
JButton B2=new JButton("确认");
JButton B3=new JButton("下一题");
JButton B4=new JButton("换皮肤");
JPanel p1=new JPanel();
int n=0,a,b,c,d,j,k,l,m=0,p;
double result;
char[]h={'+','-','*','/'},h1={'(',')','!'};
String s1,s2;
Color col[]={Color.blue,Color.green,Color.ORANGE,Color.PINK,Color.GRAY,Color.RED,Color.LIGHT_GRAY};
myframe(){
this.setTitle("四则运算");
this.setSize(300,280);
this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
this.add(p1);
p1.setLayout(null);
L1.setBounds(50, 20, 90, 30);
p1.add(L1);
L4.setBounds(140, 20, 150, 30);
p1.add(L4);
L2.setBounds(50, 70, 90, 30);
p1.add(L2);
T1.setBounds(150, 70, 90, 30);
p1.add(T1);
B4.setBounds(100, 110, 90, 30);
p1.add(B4);
B1.setBounds(10, 150, 90, 30);
p1.add(B1);
B2.setBounds(100, 150, 90, 30);
p1.add(B2);
B2.setEnabled(false);
B3.setBounds(190, 150,90,30);
p1.add(B3);
L3.setBounds(50, 200, 50, 30);
B3.setEnabled(false);
p1.add(L3);
L5.setBounds(100, 200, 180, 30);
p1.add(L5);
this.setVisible(true);
this.setLocationRelativeTo(null);
B1.addActionListener(new B());
B2.addActionListener(new B());
B3.addActionListener(new B());
B4.addActionListener(new B());
}
class B implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource()==B1)
{
p=n=(int) Double.parseDouble(T1.getText());
//System.out.print(n);
if(n>5||n<1)
{
JOptionPane.showMessageDialog(null,"输入的个数不能大于5或者小于1","注意",JOptionPane.INFORMATION_MESSAGE);
}
else
{
B1.setEnabled(false);
B2.setEnabled(true);
B3.setEnabled(true);
L2.setText("输入答案 :");
L5.setText(null);
T1.setText(null);
Star.star(h1, h,a,b,c,d,n,j,k,s1,L4,result);
}
}
if(e.getSource()==B2)
{
l=(int) Double.parseDouble(T1.getText());
if(l==result)
{
m++;
s2="答案正确！";
L5.setText(s2);
}
else{
s2="答案错误!答案为:"+String.valueOf(result);
L5.setText(s2);
}
B2.setEnabled(false);
}
if(e.getSource()==B3)
{
if(n==0)
{
JOptionPane.showMessageDialog(null, "一共"+p+"道题目。正确的题数为:"+m,"成绩",JOptionPane.INFORMATION_MESSAGE);
B1.setEnabled(true);
B2.setEnabled(false);
B3.setEnabled(false);
L2.setText("输入题目个数:");
L4.setText(null);
T1.setText(null);
}
else
{
L5.setText(null);
T1.setText(null);
Star.star(h1, h,a,b,c,d,n,j,k,s1,L4,result);
B2.setEnabled(true);
}
}
if(e.getSource()==B4)
{
int i;
i=(int)(Math.random()*6);
p1.setBackground(col[i]);
}
}
}
}
import javax.swing.JLabel;
public class Star {
public static void star(char[]h1,char[]h,int a,int b,int c,int d,int n,int j,int k,String s1,JLabel L4,double result){
a=(int) (Math.random()*200-100);
b=(int) (Math.random()*200-100);
c=(int) (Math.random()*200-100);
d=(int) (Math.random()*200-100);
j=(int) (Math.random()*4);
k=(int) (Math.random()*4);
if(d<0)
{
a=(int) (Math.random()*9+1);
s1=String.valueOf(a)+String.valueOf(h1[2]);
L4.setText(s1);
result=1;
for(int i=1;i<=a;i++)
{
result=result*i;
}
}
else
{
if(b>=0&&c>=0)
{
s1=String.valueOf(a)+String.valueOf(h[j])+String.valueOf(b)+String.valueOf(h[k])+String.valueOf(c);
L4.setText(s1);
System.out.println(s1);
}
else if(b<0&&c>=0)
{
s1=String.valueOf(a)+String.valueOf(h[j])+String.valueOf(h1[0])+String.valueOf(b)+String.valueOf(h1[1])+String.valueOf(h[k])+String.valueOf(c);
L4.setText(s1);
System.out.println(s1);
}
else if(b>=0&&c<0)
{
s1=String.valueOf(a)+String.valueOf(h[j])+String.valueOf(b)+String.valueOf(h[k])+String.valueOf(h1[0])+String.valueOf(c)+String.valueOf(h1[1]);
L4.setText(s1);
System.out.println(s1);
}
else
{
s1=String.valueOf(a)+String.valueOf(h[j])+String.valueOf(h1[0])+String.valueOf(b)+String.valueOf(h1[1])+String.valueOf(h[k])+String.valueOf(h1[0])+String.valueOf(c)+String.valueOf(h1[1]);
L4.setText(s1);
System.out.println(s1);
}
if(k>1) //后面的计算符为乘除，先算后面两个数
{
if(k==2)
{
result=b*c;
}
else if(k==3)
{
result=b/c;
}
if(j==0)
{
result=result+a;
}
else if(j==1)
{
result=a-result;
}
else if(j==2)
{
result=a*result;
}
else if(j==3)
{
result=a/result;
}
}
else if(k<2)
{
if(j==0)
{
result=b+a;
}
else if(j==1)
{
result=a-b;
}
else if(j==2)
{
result=a*b;
}
else if(j==3)
{
result=a/b;
}
if(k==0)
result=result+c;
if(k==1)
result=result-c;
}
}
System.out.println(result);
n--;
}
}
具体结果和总结在我的队友14曾柏书（http://www.cnblogs.com/cypress-zeng/）的博客里，那边会有详细地解释啦。