十进制转八进制

输入三位十进制数，输出八进制数

import java.util.Scanner;public class DecToHex{public static void main(String[] args){Scanner s = new Scanner(System.in);int num;System.out.println("请输入一个三位的十制数：");while(true){num = s.nextInt();if (String.valueOf(num).length() == 3 ){break;}else {System.out.println(num + "不是一个三位数，请重新输入：");}}System.out.println(num + "转化成八进制为：" + Integer.toOctalString(num));}}