Unable to create a Java NetBeans project inside Dropbox folder -

since last year i've been using netbeans main ide college reasons, must code our exams using ide (unfortunately) using other not option. practical reasons create java projects inside dropbox folder of current subject couple of days ago when had run project prompted on output following:

error: not find or load main class javaapplication44.javaapplication44 java result: 1 build successful (total time: 0 seconds) 

i aware common problem , have tried following:

• reinstalling netbeans & jdk
• relocating main class using preferences menu of current project.

so here comes problem, after reinstalling again , having tried sort of possible solutions, created project (again) in dropbox folder know if issue disappeared didn't, created project in desktop , worked. after bit of trial , error problem dropbox folder because when create simple project hello world, 100% code correct, inside place works fine.

any appreciated.

regards.

dropbox might creating hidden files causing ide fail on project.

i consider using code versioning tool instead of dropbox, git or subversion. git, can host project free on github (public repository only) or bitbucket (public or private repositories).