Additional Notes
How would you explain an ‘unreachable’ object in a Java interview?
Track: Java
Topic: Garbage Collection
Focus: Generational GC
Java: Generational GC
Answer
An object not referenced by any reachable chain of references.
In Java, an object becomes 'unreachable' when there are no more references to it from any part of the live application. This means the object cannot be accessed directly or indirectly. The Garbage Collector identifies these objects and reclaims their memory. For instance, if a local variable referencing an object goes out of scope, the object can become unreachable.
In Java, an object becomes 'unreachable' when there are no more references to it from any part of the live application. This means the object cannot be accessed directly or indirectly. The Garbage Collector identifies these objects and reclaims their memory. For instance, if a local variable referencing an object goes out of scope, the object can become unreachable.
Topics: Garbage Collection Generational GC Java