On virtual machines and expected behaviour

Ever tried running this on your ENTERPRISE VIRTUAL MACHINE?
Integer a = 1000;
 Integer b = 1000;
 System.out.println("a == b (1000 == 1000): " + (a == b));

 Integer aa = 100;
 Integer bb = 100;
 System.out.println("aa == bb (100 == 100): " + (aa == bb));
Guess what's the output, run it and report back.

>>37
String s1 = new String("cats");
String s2 = new String("cats");

BigInteger b1 = new BigInteger("0");
BigInteger b2 = new BigInteger("0");

On my virtual machine which conforms to the spec and optimizes strings and bigints to save space both s1 == s2 and b1 == b2. The fact that yours doesn't is irrelevant. Please leave the men to continue their discussion.