Java Garbage Collection Questions with Answers | Programming Q&A | Page 4

Garbage Collection in Java is a critical concept for memory management and performance optimization. This topic includes Java programming questions and answers related to JVM memory models, automatic garbage collection, and reference handling. Practicing garbage collection questions with answers helps learners prepare for TCS, Accenture, Infosys, and other software company interviews. A solid understanding of garbage collection enables developers to write efficient Java programs, reducing memory leaks and improving application stability.

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Q31

Which garbage collector is default in Java 8?

A Serial GC
B Parallel GC
C CMS GC
D G1 GC

Answer: Option B

Explanation: Parallel GC is default in Java 8.

Q32

Can we force garbage collection in Java?

A Yes, using System.forceGC()
B No, only request is possible
C Yes, using Runtime.forceGarbageCollection()
D Yes, using JVM.gc()

Answer: Option B

Explanation: We can only request, not force garbage collection.

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Garbage Collections Questions and Answers

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