java使用JOptionPane猜数字游戏

java使用JOptionPane猜数字游戏

本文实例为大家分享了java实现猜数字游戏的具体代码，供大家参考，具体内容如下

一、我猜数字

import java.util.Random;

import javax.swing.JOptionPane;

public class MyRandom

{

public static void main(String[] args)

{

//生成随机数

Random randomNumber = new Random();

int myNum = randomNumber.nextInt(10);

String guessNum = "";

int guessNumber = 0;

//猜对猜错的标识

boolean sign = false;

//猜数字的循环

do{

try{

guessNum = JOptionPane.showInputDialog(null,"欢迎来到猜数字游戏！,请输入数字");

guessNumber = Integer.parseInt(guessNum);

if(guessNumber > myNum)

{

JOptionPane.showMessageDialog(null,"猜大了");

}

else if(guessNumber < myNum)

{

JOptionPane.showMessageDialog(null,"猜小了");

}

else

{

sign = true;

}

}catch(NumberFormatException e){

JOptionPane.showMessageDialog(null,"输入格式错误");

}

}while(guessNumber != myNum);

if(sign)

{

JOptionPane.showMessageDialog(null,"恭喜你猜对了!");

}

}

}

二、电脑猜数字

import javax.swing.JOptionPane;

import java.util.ArrayList;

import java.util.Random;

public class ComRandom

{

//给猜的数设置一个范围

int low = 0, high = 10;

boolean leave = false;

public void run()

{

int myIntNumber = 0;

String myNumber;

try{

//给电脑一个数让他猜

myNumber = JOptionPane.showInputDialog(null,"给我一个0-10的数字，让我（电脑）来猜");

try{

myIntNumber = Integer.parseInt(myNumber);

}catch(NumberFormatException e){

JOptionPane.showMessageDialog(null,"异常");

leave = true;

}

}catch(NullPointerException e){

JOptionPane.showMessageDialog(null,"拜拜");

}

if(!leave){

//电脑随机猜一次，生成一个随机的数字

Random randomGenerator= new Random();

int guessNumber = randomGenerator.nextInt(10);

wrYps//循环判断电脑猜的数字是大还是小

//定义两个字符串，提示电脑是猜大了还是猜小了。

String output = "";

try{

output = JOptionPane.showInputDialog(null,"是" + guessNumber + "！我猜对了吗？");

while(!output.equals("猜对了"))

{

if(output.equals("猜大了"))

{

wrYpsguessNumber = guessNumber(guessNumber,myIntNumber);

}

else if(output.equals("猜小了"))

{

guessNumber = guessNumber(guessNumber, myIntNumber);

}

else

{

JOptionPane.showMessageDialog(null,"我没听懂你在说什么...");

}

try{

output = JOptionPane.showInputDialog(null,"是" + guessNumber + "！我猜对了吗？");

}catch(NullPointerException e)

{

JOptionPane.showMessageDialog(null,"异常");

}

}

}catch(NullPointerException e){

JOptionPane.showMessageDialog(null,"异常");

}

}

leave = false;

}

/**

* 二分法猜数字

*/

private int guessNumber(int guess,int number)

{

if(guess < number)

{

//答案是5 我猜的是2

low = guess + 1;

}

else if(guess > number)

{

//答案是6我猜的是8

high = guess - 1;

}

guess = (high + low) / 2;

return guess;

}

}

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