Java程序---素数

package com.junlin;import java.util.Scanner;public class sushu {public static void main(String[] args) {Scanner sc=new Scanner(System.in);System.out.print("请输入起始值：");int a=sc.nextInt();System.out.println();System.out.print("请输入截止值：");int b=sc.nextInt();System.out.println();for(int i = a;i< b;i ++) {boolean flag=true;if(i<2){i=2;}else{for(int j = 2;j< i;j ++){if(i%j == 0){flag=false;break;}}}if(!flag){continue;}System.out.println(i);}}}