Performance of Java 1.6 vs C++?

Question

With Java 1.6 out can we say that performance of Java 1.6 is almost equivalent to C++ code or still there is lot to improve on performance front in Java compared to C++ ?

Answer 1

What program are you developing?

Comparing C++ to Java speed is like comparing a screwdriver and a hammer, pointless. In the world we live in, where both supercomputers and toasters need to be programmed, you need to focus on your particular requirements.

I use C++ for hard realtime software running on embedded systems. I wouldn't dream of using the awfully broken Java for realtime spec for at least another 5 years, when it will hopefully be mature. I would be equally loath to use C++ for a database, cloud accessing middleware app (actually I have no Idea what I just said, but I know Java is good for 'that sort of stuff')

Would you use a ferrari with no trunk space to move your belongings? Would you bring a minivan to a drag race?

People have to understand that just because they are programming languages, does not mean they are comparable in a meaningful way.