Java Memory Allocation

Here are 10 essential multiple-choice questions on Java Memory Allocation, covering key concepts.

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Question 1

In Java, which part of the memory is responsible for storing object instances?

  • Stack Memory

  • Heap Memory

  • Method Area


  • Native Memory

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Question 2

Which of the following describes the purpose of the Stack Memory in Java?

  • Stores global variables


  • Stores references to objects and local variables

  • Stores the JVM class files

  • Stores object data and arrays


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Question 3

How does Java handle memory management for objects that are no longer referenced?

  • Objects are deleted manually


  • Objects are automatically moved to disk

  • Objects are moved to Stack Memory

  • Objects are marked for garbage collection

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Question 4

Which of the following is true about Garbage Collection (GC) in Java?


  • GC is manual, and developers must call it explicitly

  • GC is used to clean unused classes only

  • GC automatically frees up memory by removing unreferenced objects

  • GC occurs only when the system memory is full


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Question 5

Which method is used to explicitly request garbage collection in Java?


  • System.gc()

  • Runtime.gc()

  • GarbageCollector.run()

  • MemoryManager.cleanup()

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Question 6

Where does the Method Area in Java store class-level information?

  • Heap Memory

  • Stack Memory

  • The JVM's permanent generation

  • The ClassLoader

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Question 7

What happens when an object is created in Java?


  • The object is created in Stack Memory


  • The object is created in Heap Memory

  • The object is created in Method Area

  • The object is created in the CPU register

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Question 8

In Java, how is Stack Memory used during method execution?

  • Stack Memory stores class variables

  • Stack Memory is used for allocating objects

  • Stack Memory is used to store method calls and local variables

  • Stack Memory is used to store garbage objects

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Question 9

Which of the following statements is true about Heap Memory in Java?


  • Heap Memory is shared by all threads


  • Heap Memory is only used by local methods


  • Objects in Heap Memory are automatically deallocated when the method ends

  • Heap Memory is used to store static variables


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Question 10

How does Java handle memory allocation for primitive types such as int or char?

  • They are stored in Heap Memory

  • They are stored in Stack Memory

  • They are stored in the Method Area


  • They are allocated in Permanent Generation

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