“Island of isolation” of Garbage Collection

Question

Could anyone please explain the concept of Island of isolation of Garbage Collection?

Answer 1

Here is a good explanation of this term. Excerpt:

• "If an object obj1 is garbage collected, but another object obj2 contains a reference to it, then obj2 is also eligible for garbage collection"
• "If object obj2 can access object obj1 that is eligible for garbage collection, then obj2 is also eligible for garbage collection"

This is called "Island of Isolation". An "island of isolation" describes one or more objects have NO references to them from active parts of an application.