Is this possible to call a specific method (other than main) of a class in a jar file from command line?
If you are talking about running Java code from the command-line, then no.
You can specify a class name, but not which method to call, that always has to be
public static void main(String argv).
What you could do is write a helper class (or script like BeanShell) to do that.
java -cp theJar.jar;. my.helper.WrapperClass theClassToCall theMethodtoCall arg1 arg2