I have written a scheduler which runs in every 30 sec. and have done some changes in file which scheduler calls repeatedly but It's calling old class files.
I have done clean build process as well as deleted all class files and created new ones but still it's reading old class files.
I am using followings --
Application server JBoss - 4.2
IDE - eclipse
Add the -class:verbose option to the java command line (add it to JAVA_OPTS the run script - I could be more precise but you didn't say which OS). This option causes the JVM to print out each class loaded and the JAR from which it came. This should help you locate the old JAR file.