what is the difference b/w Runtime.gc() and System.gc()? which one is best?

[sujitha reddy]

what is the difference b/w Runtime.gc() and System.gc()? which one is best?

[Rahul Bhattacharjee]

I think both do the same thing.But when we call gc , then also it is not guaranted that this would really remove the garbage objects from the heap releasing memory.

[Bear Bibeault]

Not a servlet question. Moved to Java in general.

[Jesper de Jong]

The API documentation of System.gc() says:

The call System.gc() is effectively equivalent to the call:

Runtime.getRuntime().gc()

There's your answer.

[Bauke Scholtz]

From the System.class

public static void gc() {
    Runtime.getRuntime().gc();
}

Personally I use System.gc(), because this is less code typing

[Ernest Friedman-Hill]

Originally posted by Bauke Scholtz:
From the System.class

public static void gc() {
    Runtime.getRuntime().gc();
}

Personally I use System.gc(), because this is less code typing

Personally, I never use either -- and neither should you. It's extraordinarily rare that calling one of these methods actually improves an application, and often it has the reverse effect.