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); //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')) { guessNumber = 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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