問題：

程式碼：

主方法：

public class Test {
       public static void main(String[]args){
       GreekAlphabet guess=new GreekAlphabet();
       guess.judge();
   }
}

其他：

import java.util.Scanner;
import java.util.Random;
public class GreekAlphabet {
    void judge(){
        Scanner reader=new Scanner(System.in); 
        Random random=new Random();
        
         int realNumber=random.nextInt(100)+1;//random.nextInt(100)是[0,100]中的隨機整數
          System.out.println("Give you anumber between 0-100:please enter a number to guess it!");
          int number=reader.nextInt();
          System.out.println("Please enter your guess number :");
          while(number!=realNumber){
              if(number>realNumber){
                  System.out.println("You guess number is small big!");
                  number=reader.nextInt();
              }else if(number<realNumber){
                System.out.println("You guess number is small little!");
                number=reader.nextInt();
              }
           }
                  System.out.println("Right!");   
    } 
}
 

執行結果：

總結：認識到了Java裡面的隨機取值。