Is it necessary to remove unnecessary class instances (instances) in Java?

Question

Java

Is it necessary to remove unnecessary class instances (instances) in Java?
If yes, how?

Answer 1

No, the garbage collector will do it for you.
But you can subtly hint to it by giving the
object a reference to null.
For example:

MyClass instanceOfMyClass = new MyClass();
 instanceOfMyClass = null;

But not the fact that the cleaner will come down to this.
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