package blah;

import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Field;

public class Play {
    public static void main (String[] args) throws java.lang.Exception
    {
        Address address = new Address();
        Class<? extends Address> clazz = address.getClass();
        Field field = clazz.getDeclaredField("address");
        Field type = Field.class.getDeclaredField("type");
        AccessibleObject.setAccessible(new AccessibleObject[]{field, type}, true);
        type.set(field, Object.class);

        Object foo = new Object();
        field.set(address, foo);

        System.out.println(Long.toBinaryString(address.address));
        System.out.println(Long.toHexString(address.address));
        System.out.println(address.address);

        System.out.println(Long.toBinaryString(System.identityHashCode(foo)));
        System.out.println(Long.toHexString(System.identityHashCode(foo)));
        System.out.println(System.identityHashCode(foo));
        System.out.println(foo);

        System.out.println(field.get(address) == foo);
    }
}

class Address {
    public long address;
}