Java Interview Question

Use this advanced question and answer to prepare for your next Java interview.

What are the automated memory management features of Java?

In comparison to other languages, the Java Runtime has several automated memory management features to improve the safety, reliability, efficiency, and ease of programming.

  • Users are not required to allocate and reclaim memory when creating objects. The JVM will create objects in the heap.
  • Memory is only allocated to objects. References to each object are stored in the stack as required.
  • The automatic garbage collector tracks unused objects and reclaims memory back from them in the next collection cycle.
  • To release an object, there should be no reference to that object or to any parent of that object in a hierarchical relation like a Collection.
  • Consequently, releasing a collection without holding on to the objects in that collection will result in the entire collection, including the objects contained within, to be garbage collected.

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