Pls do the foll actions:
Step 1:
File -> Import -> Selct radiobutton - "Jar file" -> Next
-> Select the file name(ur jar file) - > click on the java button and ensure that u have selected all the file or what evre files u want " -> Finish
If at all u r not getting any errors but the files are not apperaring in ur Project means go to
Step 2:
From the work bench click
Window -> Reposiroy Explorer -> Select the Project,edition,package or type and right click and from the pop up menu click "Add to Workspace"
This 'd work
All the best for a successful completion of ur work
Pramod