Core Java - Interview Questions and Answers for 'Destructors' | Search Interview Question

Core Java - Interview Questions and Answers for 'Destructors' - 4 question(s) found - Order By Newest

Q1. What are constructors and Destructors in Java ?

Ans. Constructors are used for initializing the object state once it is initialized and memory has been reserved for it.

Destructor is used to de-allocate memory allocated by objects.

There are no destructors in Java. Alternatively, Java provides Automatic garbage collection i.e automatically releasing the un-referenced memory.

Sample Code for constructor

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Q2. What is a Destructor ? Do we have Destructors in Java ?

Core Java

Ans. Destructor is used to de-allocate memory allocated by objects.

There are no destructors in Java. Alternatively, Java provides Automatic garbage collection i.e automatically releasing the un-referenced memory.

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Q3. Why don't Java objects have destructors ?

Core Java

Ans. Java manages memory using built-in garbage collector

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Q4. In Java, would you like to see an explicit destructor?

Core Java

Ans. Yes , a gc method to explicitly call garbage collection immediately on the object. It will provide better flexibility over application that require optimal usage of memory.

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