Re: general performance question

There's this, which might not be what the OP had in mind:

    void method()
    {
        ...
        if (condition)
        {
            LargeObject lg = new LargeObject();
            lg.doStuff()
            // See discussion below
        }
        ...
    }

This has been discussed on this group, and the consensus is that the
method's stack frame continues to point to the LargeObject, so that it
can't be collected until the method returns. (It seems to me that the
JVM should be free to null out the reference once it goes out of scope,
or even if it's in scope but flow analysis makes it clear that it can't
be used any more, but that was a minority opinion.) Thus it can make
sense to replace the comment with

    lg = null;