Delete unused variable's memory in java

Question

I know that Java have its own garbage collection, but sometimes I want to delete the garbage manually. Is there any way to do the work like that? And considering that I have

Answer 1

It's not worth doing this manually, since the garbage collector will usually do a better job, and doing it yourself isn't likely going to make a noticeable difference in your application.

If you must, you can set the variable references to null, and call System.gc(), and this will invoke the garbage collector manually.