Java应用程序不知道要打开的文件的名称- Mac OS X

I have a Java application in an application bundle that has a file association (using Info.plist) that runs when a document is double-clicked. How do I get the filename of the document that was double-clicked in my Java application? Right now my Java app just runs and displays an empty document. There doesn't seem to be any command line arguments passed to the application.I have a Java application in an application bun