判断素数

public class sushu {
    public static void main(String[] args) {
         for(int i=1;i<=100;i++)
{     
 if(i<8&&i%2!=0)
System.out.println(i+" "); 
if(i>=8&&i%2!=0&&i%3!=0&&i%5!=0&&i%7!=0)
System.out.println(i+" ");


}       
              
    }
}