HI, I guess from File-New-Project. You select the Java Project then New Java Project dialog box appear. Just follow the wizard. To make the src and classes folder, in the New Java Project box,there is a portion title "Project Layout", select create separate source and output folders..you can the configure default on the portion.select that another dialog box will appear...You select folders. for the source folder name : src . Output folder name: classes. then click ok.
Hope this will help you. Sorry if I mess up the things..because first time posting a reply