Eclipse jar file is not exported with project -

i have simple project need imported eclipse , started. when export project , import again comes error saying missing required jar file. jar file added build path, not carry on when project exported. why this? have been searching day answer on google , none have helped.

would have send jar file along project , have users manually add it?

things have tried: going build path order , export , clicking jar file. using clean workspace import / restarting eclipse.

you may want try this:

right click on imported project select build path -> configure build path -> java build path -> libraries tab , check if jar file eclipse says missing present in libraries tab.

if present select , click edit, "file dialog" pop up, find desired jar in computer's directory. , click ok wait eclipse build workspace. if not present add through add jars... or add external jars...