Windows 98SE MS-DOS prompt extensions problem

I installed JDK 1.4 into my system and set the paths and everything was fine, but there's just one problem. When I am in MS-DOS Prompt and wanted a listings of my present working directory, it only shows me xxx.jav without the 'a'. The file suppose to be xxx.java but it only shows xxx.jav What should I do to resolve this problem as I cannot compile with xxx.jav and when I type xxx.java, it says file not found, althought it's there. Please advise

[467 byte] By [madwolfnemesis] at [2007-9-26 2:51:08]