怎么提取百位和十位和个位

package com.hnsw.app;

public class TypDemo3 {
    public static void main(String[] args) {
        int a = 987;
        int a1,a2,a3;
        a1=a/100;
        a2=a/10%10;
        a3=a%10;
        System.out.println(a1);//百位
        System.out.println(a2);//十位
        System.out.println(a3);//个位
    }
}