How can one access a phantom link in the system?

A PhantomReference in Android (Java) is used to track objects that are ready for garbage collection but have not yet been removed from memory. To access the object via a phantom reference, you cannot call get() directly — it always returns null.

Access to the object is only possible through a ReferenceQueue, where the phantom reference is placed after the object becomes unreachable. Therefore, to work with a phantom reference, you need to:

1. Create a PhantomReference with a ReferenceQueue.
2. Monitor the ReferenceQueue to know when the object is ready for deletion.

Example:

ReferenceQueue<MyObject> refQueue = new ReferenceQueue<>();
PhantomReference<MyObject> phantomRef = new PhantomReference<>(myObject, refQueue);

// In another thread or loop:
Reference<?> ref = refQueue.poll();
if (ref != null) {
    // The myObject is ready for garbage collection
    // You can perform resource cleanup here
}

Thus, there is no direct access to the object through a phantom reference — it serves to notify when the object is ready for deletion.