Error on server log

I saw this in my server log and not sure how to correct it

"2007-07-25 16:04:16,755 INFO [STDOUT](Stop Thread) java.lang.NoClassDefFoundError: x1"

[160 byte] By [jbd60a] at [2007-11-27 11:51:48]
# 1

Make sure that the "x1" class is in the classpath of whatever's running on your server.

DrClapa at 2007-7-29 18:40:32 > top of Java-index,Java Essentials,New To Java...
# 2

what file do I look into to make sure "x1" class is in the classpath?

jbd60a at 2007-7-29 18:40:32 > top of Java-index,Java Essentials,New To Java...
# 3

is this particular to an application I am running?

jbd60a at 2007-7-29 18:40:32 > top of Java-index,Java Essentials,New To Java...
# 4

> is this particular to an application I am running?

Yes.

_helloWorld_a at 2007-7-29 18:40:32 > top of Java-index,Java Essentials,New To Java...
# 5

> what file do I look into to make sure "x1" class is

> in the classpath?

Nothing to do with any file, classpath is the environment variable where your program getting executed. Just make sure you have x1.class in the path.

Or to be more simple way go to the directory where you have x1.class and say javac x1.class

my_foruma at 2007-7-29 18:40:32 > top of Java-index,Java Essentials,New To Java...