Unlike native applications, Java applications do not contain an easily accessible index of names. So, for example, you cannot simply specify a method name:
(dbx) stop in myMethod #This will not work
Instead, you need to use the full path to the method.
(dbx) stop in com.any.library.MyClass.myMethod
An exception is the case where you are stopped with some method of MyClass in which myMethod should be enough.
One way to avoid including the full path to the method is to use stop inmethod.
(dbx) stop inmethod myMethod
However, this command might cause stops in multiple methods name myMethod.