java第二周的作业

package java第二周学习;
import javax.swing.JOptionPane;
public class 数学题 {private int a;
private int b;
private int d;
private String c;
    private  boolean e;
数学题(int a, int b, String c) {
this.a = a;
this.b = b;
this.c = c;
}
public void xianshi (int i)
{
String s;
s= JOptionPane.showInputDialog(a+c+b+"=" );
 d = Integer.parseInt(s);
}
public void pan() {
switch (c) {
case "+":
       if(a+b==d)
       {
       e=true;
       }
       else
       {
       e=false;
       }
break;
case "-":
 if(a-b==d)
       {
       e=true;
       }
       else
       {
       e=false;
       }
break;
case "*":
 if(a*b==d)
       {
       e=true;
       }
       else
       {
       e=false;
       }
break;
default:
 if(a/b==d)
       {
       e=true;
       }
       else
       {
       e=false;
       }
break;
}
}
public boolean isE() {
return e;
}
public void setE(boolean e) {
this.e = e;
}
public int getA() {
return a;
}
public void setA(int a) {
this.a = a;
}
public int getB() {
return b;
}
public void setB(int b) {
this.b = b;
}
public int getD() {
return d;
}
public void setD(int d) {
this.d = d;
}
public String getC() {
return c;
}
public void setC(String c) {
this.c = c;
}}

package java第二周学习;import java.util.LinkedList;
import java.util.Scanner;
import javax.swing.JOptionPane;public class 小学四年学习 {@SuppressWarnings({ "unlikely-arg-type", "resource", "unused" })
public static void main(String[] args) {
LinkedList<数学题> shu = new LinkedList<数学题>();
int i = 0;
String f;
//生成数学题数据
while (i < 30) {
int a = (int) (Math.random() * 100);
int b = (int) (Math.random() * 100);
int c = (int) (Math.random() * 4);
switch (c) {
case 1:
f = "+";
break;case 2:
f = "-";
break;
case 3:
f = "*";
break;
default:
f = "/";
break;
}
数学题 add = new 数学题(a, b, f);
shu.add(add);
i++;
}
 denglu(shu);}// 计算得分和哪道题错误
public static void defen(LinkedList<数学题> a) {
int j = 0;
int m = 0;
for (int i = 0; i < a.size(); i++) {
if (a.get(i).isE()) {
j++;} else {
m++;
}}
JOptionPane.showMessageDialog(null, "总分是 " + (j * 10), "您的水平", JOptionPane.PLAIN_MESSAGE);
JOptionPane.showMessageDialog(null, "错误了" +m+"道","您的水平", JOptionPane.PLAIN_MESSAGE);
for (int i = 0; i < a.size(); i++) {
if (!(a.get(i).isE())) {JOptionPane.showMessageDialog(null, (i+1)+"错误了","您的水平", JOptionPane.PLAIN_MESSAGE);
}
}
}// 开始
public static void open(LinkedList<数学题> a) {
for (int i = 0; i < a.size(); i++) {
a.get(i).xianshi(i);
a.get(i).pan();
JOptionPane.showMessageDialog(null, "您的答案是 " + a.get(i).isE(), "你的水平", JOptionPane.PLAIN_MESSAGE);
}
defen(a);}
//账号登录界面
 public   static void denglu(LinkedList<数学题> a)
{
String Zhanghao, Mima, W;
JOptionPane.showConfirmDialog(null, "小学四年级数学题", "数学是个好东西！", JOptionPane.YES_NO_CANCEL_OPTION);
Zhanghao = JOptionPane.showInputDialog("输入账号：");
if (Zhanghao.equals("555")) {
Mima = JOptionPane.showInputDialog("输入密码：");
if (Mima.equals("555")) {
int yanzhengma = (int) (Math.random() * 10000);
W = JOptionPane.showInputDialog("输入验证码："+yanzhengma);
String s=Integer.toString(yanzhengma);
if(W.equals(s))
{
JOptionPane.showMessageDialog(null, "登录成功！");
  open(a);
}
else {
JOptionPane.showMessageDialog(null, "验证码错误");
}}else {
JOptionPane.showMessageDialog(null, "密码错误");
}
}
      else {
JOptionPane.showMessageDialog(null, "无此账号记录");
}
}
}