Does java do runtime optimization?

I am observing this weird behaviour while profiling a java application.

It seems like java actually inlines methods while running.

For example, consider

int foo() {

int x;

x = bar(x);

return x;

}

if foo is called 100 times, it calls bar() the first few times (28 times ) but soon stops calling bar().

When I have a System.out inside bar(), it is called 100 times.. Without it, I see it being called 28 times and then it doesn't.

Any comments?

[541 byte] By [neeluap] at [2007-9-26 1:35:07]