What are strong, soft, weak and phantom references in Java ?
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 Q1. What are strong, soft, weak and phantom references in Java ?Core Java
Ans. Garbage Collector wont remove a strong reference.

A soft reference will only get removed if memory is low.

A weak reference will get removed on the next garbage collection cycle.

A phantom reference will be finalized but the memory will not be reclaimed. Can be useful when you want to be notified that an object is about to be collected.

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