for循环-判断一个数是否为质数

import java.util.Scanner;public class ForTest8 {//判断一个数是否为质数public static void main(String[] args) {// TODO Auto-generated method stubScanner in=new Scanner(System.in);System.out.println("请输入一个大于0的整数:");int g=in.nextInt();boolean t=true;for(int i=1;i<g/2;i++){if(g%i==0){t=false;break;}}System.out.println(g+(t?"是":"不是")+"质数。");/*if(t)System.out.println(g+" is a prime");elseSystem.out.println(g+" is not a prime");*/}}