Why should I use the 64-bit JDK over the 32-bit version?

Question

I use Eclipse and 64-bit Windows and develop Java desktop applications. So far, I have only used the 32-bit JDK, but is there any reason to change to 64-bit JDK for Java dev

Answer 1

Try this:

public class Benchmark {
    public static void main(String args[]) {
        long time = System.currentTimeMillis();
        for (int a = 1; a < 900000000; a++) {
            for (int b = 1; b < 20; b++) {
            }
        }
        long time2 = System.currentTimeMillis() - time;
        System.out.println("\nTime counter stopped: " + time2);
    }
}

In 32 and 64 bit and laugh at the difference.