Java--素数

package sushu;

public class sushu1 {
public static void main(String args[])
{
    int m,i,j,n=0;
    for(i=1;i<=100;i+=2) {
        m=(int)Math.sqrt((double)i);
        for(j=2;j<=m;j++) 
            if(i%j==0)
                break;
        
            if(j>m)
            {
                if(n%6==0)
                System.out.println("\n");
                System.out.print(i+" ");
                n++;
            }
                
    }
}
}