Jar file is not getting executed from commandline

Hi ,

this is the weired problem i had.

i have created a executable jar file.When i double click that file it is getting executed without any problem but when i go to command prompt and tries to run this jar by using folowing command

java -jar myjar.jar

it is giving me the error as

Exception in thread "main" java.lang.UnsupportedClassVersionError:com/build/deploy/Deploy (Unsupported major.minor version 49.0)

i am not getting why it is giving me this version error.

can any body answer my question.

i am using version JDK1.5 also program is running perfesctly from ecllipse IDE.

[635 byte] By [asbn5379a] at [2007-11-26 22:30:33]