Sun Reference implementation
SUN 1.0 Compat mode
12978948983640904208
0xb41e7d55cfd55210
Sun JDk 5
1081892073854801359
0xf03a71beb6d15cf
MX4J 2.1
1081892073854801359
0xf03a71beb6d15cf
IBM has no compatibility mode
JBoss 4.0 1.0 compat mode
0xb41e7d55cfd55210L
JBoss 4.0 default
0xf03a71beb6d15cfL