problem with jdk1.5 and Make Script(unix)

HIi All..we use jdk1.4 in our project but when i use jdk1.5 it build sucessfully ..but produce NullPointerException Note : we use Makefile(unix based script)
[199 byte] By [KARUPS@CISCO_HCL.COMa] at [2007-11-27 4:51:39]
# 1
The build itself (not when your run) produces that?
jschella at 2007-7-12 10:05:26 > top of Java-index,Developer Tools,Java Compiler...
# 2
NO, only when i launch the software, it comes
KARUPS@CISCO_HCL.COMa at 2007-7-12 10:05:26 > top of Java-index,Developer Tools,Java Compiler...
# 3
That's interesting. What are the results of your investigations so far?
ejpa at 2007-7-12 10:05:26 > top of Java-index,Developer Tools,Java Compiler...
# 4
> NO, only when i launch the software, it comesThen the exception should tell you the source.
jschella at 2007-7-12 10:05:26 > top of Java-index,Developer Tools,Java Compiler...