"Islands of Isolation" refers to objects with circular references to each other but with no reference to any of the objects from a Java program.
The following program creates an Island of Isolation of 3 objects.
public class Test {
private Test next;
public static void main(String[] args) {
Test t1 = new Test();
Test t2 = new Test();
Test t3 = new Test();
t1.next = t2;
t2.next = t3;
t3.next = t1;
t1 = null;
}
}
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