How to use external java files into my project

Hi all,
I need your help to import my external java files in to my project.
The files are in package folder.
So how to tell the import command with the path of the folder.
I read also that I can make a jar file and integrate it into the project.
How can I make jar file.
Best regards...

there is one utility in j2se jar and check the option also
put that jar file in lib folder of yr application folder
[email protected]

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there is one utility in j2se jar and check the option also
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