There is incompatibility in BigDecimal.toString() between 1.4.2 and 1.5.0. If you run attached testcase,
util 1.4.2 it returns 123000000,
while 1.5.0 and later returns 1.23E+8
It's in API doc, but user claimed this better be documented in pages such as following.
http://java.sun.com/javase/technologies/compatibility.jsp
http://java.sun.com/j2se/1.5.0/ja/compatibility.html