It gets worse

Yesterday, I described my surprise at learning the true sizes of various Java Objects. What I didn't mention is that the sizes I was looking at were for a 32-bit JVM. Later yesterday, I tested out the same code on a 64-bit JVM. Egad. It gets worse. Sizes for various Java Objects:

	32-bit	64-bit
Object	8	16
Integer	16	24
Long	16	24
Float	16	24
Double	16	24
String	40	64
Date	24	32
Calendar	432	544
byte[0]	16	24
byte[32]	48	56
byte[128][0]	2576	4120
ArrayList<Integer>(1)	56	96
ArrayList<Integer>(2)	80	128