Is it true that the rmi interface compiler is not needed for java 1.5 or newer and that just compiling the java file where the UnicastRemoteObject is defined with javac is enough?Rmic still works and it generates a stub class file if you give it the class file of the implementation of the remote object.
According to the RMI tutorial:
http://download.oracle.com/javase/tutorial/rmi/overview.html
Compiling Sources
As with any Java program, you use the javac compiler to compile the source files. The source files contain the declarations of the remote interfaces, their implementations, any other server classes, and the client classes. Note: With versions prior to Java Platform, Standard Edition 5.0, an additional step was required to build stub classes, by using the rmic compiler. However, this step is no longer necessary.
See the preamble to the Javadoc for UnicastRemoteObiect. You can avoid using rmic under specific circumstances, i.e. when you construct or export the remote object providing a port number parameter (even zero), for reasons described in the documentation.
来源：https://stackoverflow.com/questions/4702882/is-rmic-still-needed