public class EverySeven {
    public static void main(String[] args) {
        for (int i = 50; i < 80; i++) {
            if (i % 7 == 0 | i % 10 == 7 | i / 10 == 7) {
                continue;
            }
            System.out.print(i + " ");
        }
    }
}

输出结果：

50 51 52 53 54 55 58 59 60 61 62 64 65 66 68 69