What is the problem when javac compiler creates a jarfile with lowercase class file names?

When I run the javac compiler it compiles code and creates a JAR file, but the names of the class files inside the JAR are all in lower case. However, the classes within the source files have both lower an开发者_如何转开发d upper case names. The result of this is that I cannot compile other projects which are dependent on this JAR.

I had the same issue and it was happening in dynamic view of the clearcase. I have unchecked uncheck "CaseInsensitive MVFS" from Clearcase control panel. And restarted MVFS. (may need to restart system)