Java:thinging in java p139 exercise4

public class primeTest {

    public static void main(String[] args) {

        int i, j;
        for (i = 3; i < 100; i++) {
            for (j = 2; j < i; j++) {
                if (i % j == 0)
                    break;
            }
            if (i == j)
                System.out.println(i);
        }
    }
}