Java garbage collection

Question

Java automatically calls garbage collector, then why we need manual calls for garbage collection? When should use System.gc()

Answer 1

Garbage collection process is not under the user's control.So it makes no sense to call System.gc(); explicitly. It entirely depends on the JVM.

Few days back, I had asked exactly the same question : [Here].

In fact, many questions related to calling System.gc(); explicitly have been already asked and answered here. Calling System.gc(); explicitly is always considered as poor programming skill, although it won't do any harm.

Here are the few links that I you should go through it. It will definitely clarify your doubt.

• Calling System.gc(); explicitly
• Bad practise - Calling System.gc();
• System.gc(); in java

PS : Btw, you should seriously take the extra effort to go through similar StackOverflow questions before posting about your doubts.