public class Prime100Continue
{
    public static void main(String[] args)
    {
        System.out.println("**** 100--200的质数 ****");
        int n=0;
        outer:for(int i=101;i<200;i+=2)         //外层循环
        {
            for(int j=2;j<i;j++){               //内层循环
                if(i%j==0)  continue outer;     //不是质数，则继续外层循环
            }
            System.out.print(""+i);             //显示质数
怎样空格打印数字                            ~~~~~
            n++;                                //计算个数
            if(n<10)  continue;                 //未满十个数，则不换行
            System.out.println();
有必要                      ~~~~~~~~~~~~~~~~~~~~
开始已赋值，现在还有必要？    n=0;
                           ~~~~
        }
        System.out.println();
有必要            ~~~~~~~~~~~~~~~~~~~~~
    }
}