I have been using prosclipsing to integrate processing into eclipse for quite sometime. I decided to create a Java Project and mess around with some non-processing functions I learned in an oracle javadoc. When I try to run it, it opens a processing.core.PApplet file for a split second and then returns this error in the console.

Usage: PApplet <appletname>

For additional options, see the Javadoc for PApplet 

I am quite confused because I didn't add the processing.core.* file to the project file or attempt to import the file. I have no other processsing or prosclipsing projects open at the time. I have tried restarting eclipse.

Thanks all,

      Andrew G.