Prev Next

Java / Garbage collection

How do you trigger garbage collection through Java code?

The methods System.gc() and Runtime.gc() may be used to send request of Garbage collection to JVM but it is not guaranteed that garbage collection will happen.

We can call finalize method manually however that also does not guarantee object be garbage colllected.

Invest now in Acorns!!! 🚀 Join Acorns and get your $5 bonus!

Invest now in Acorns!!! 🚀
Join Acorns and get your $5 bonus!

Earn passively and while sleeping

Acorns is a micro-investing app that automatically invests your "spare change" from daily purchases into diversified, expert-built portfolios of ETFs. It is designed for beginners, allowing you to start investing with as little as $5. The service automates saving and investing. Disclosure: I may receive a referral bonus.

Invest now!!! Get Free equity stock (US, UK only)!

Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.

The Robinhood app makes it easy to trade stocks, crypto and more.

Webull! Receive free stock by signing up using the link: Webull signup.

More Related questions...

What is the purpose of garbage collection in Java? How does Garbage Collection work in Java? Explain the structure of heap. Is garbage collection in Java automatic? When does an Object become eligible for Garbage collection in Java? How will you identify minor and major garbage collection in Java? Difference between system.gc() and runtime.gc(). How to identify if GC resulted due to calling System.gc()? What is finalize method in Java? How many times does the GC calls the finalize() method for an object? What does System.gc() and Runtime.gc() methods do ? If an object reference is set to null, will the GC immediately free the memory held by that object ? How do you trigger garbage collection through Java code? Does finalize method automatically chain like constructors? How to improve the possibility of JVM running of finalize method? Does Java support destructors? When to override finalize method in Java? What is the access modifier for finalize method? Best practice for calling super class finalize method. Can we call finalize method explicitly? What to avoid when overriding finalize method? What are the Garbage collection (GC) roots? Explain Stop-The-World (STW) pauses. What is JVM ergonomics? What is the default garbage collector on a server class Machine. What are the 2 JVM tuning parameters for parallel collector? What is the default garbage collector in Java? Explain Serial garbage collector. How to find which Garbage collector is running? Is objects with circular reference, object linked to each other, garbage collected? Explain JVM Escape Analysis.
Show more question and Answers...

Programs

Comments & Discussions

Interviews Questions

About Javapedia.net

Javapedia.net is for Java and J2EE developers, technologist and college students who prepare of interview. Also this site includes many practical examples.

This site is developed using J2EE technologies by Steve Antony, a senior Developer/lead at one of the logistics based company.

contact: javatutorials2016[at]gmail[dot]com

Kindly consider donating for maintaining this website. Thanks.

Copyright © 2026, javapedia.net, all rights reserved. privacy policy.

DMCA.com Protection Status