public class Main {
    native static void setTag(Object obj, long tag);
    native static void doCheck(Class cls, Class obj);
    static {
        System.loadLibrary("Main");
    }
    public static void main(String... args) {
        C1 c1 = new C1();
        long c1_tag=888;
        long obj_tag=777;
        setTag(C1.class, c1_tag);
        setTag(Object.class, obj_tag);
        doCheck(C1.class, Object.class);
        System.out.println(c1);
    }

}

class C1 {
}