Quiz on Island of Isolation in Java

What is “Island of Isolation” in Java?

Can objects in an island of isolation be garbage collected?

Which memory area do island-of-isolation objects reside in?

What makes objects eligible for forming an island of isolation?

Which Java GC algorithm detects islands of isolation?

Are islands of isolation a cause of memory leaks in Java?

What are GC roots in Java?

In island of isolation, which of the following is true?

How can we prevent the creation of islands of isolation?

Which of the following code snippets creates an island of isolation?

class A {
A obj;
}
A a1 = new A();
A a2 = new A();
a1.obj = a2;
a2.obj = a1;
a1 = null;
a2 = null;

Do static variables contribute to island of isolation?

Why is reference counting insufficient for Java GC?

Which tool can be used to analyze memory and detect such isolated objects?

What happens if the GC misses an island of isolation?

How often does Java’s GC run to remove such islands?