import java.util.Random; import java.util.Scanner; public class RandomTest { public static void main(String[] args) { Random r = new Random(); int number = r.nextInt(100)+1; while(true) { Scanner sc = new Scanner(System.in); System.out.println("请输入您要猜的数字"); int guessNumber = sc.nextInt(); //比较输入的数字和系统产生对的数据 if(guessNumber > number) { System.out.println("您输入的数字"+guessNumber+"太大了"); } else if(guessNumber < number) { System.out.println("您输入的数字"+guessNumber+"太小了"); } else { System.out.println("恭喜您猜中了!!!!!"); break; } } } }