public class TestPrimeNumber(int i)
{
public static void main(String[] args)
{
long start = System.currentTimeMillis(); //取開始時間
l:for(int i = 2; i <= 100000; i ++)
{
for(int j = 2; j < Math.sqrt(i); j ++){ //當j小於根號i的時候，繼續迴圈。
if(i % j == 0)
continue l;
}
System.out.println(i);
}
long end = System.currentTimeMillis();
System.out.println("The time cost is " + (end - start));
}
}