I'm using number of java files as common in different ADF projects, I want to archive them in jar file so I can import this archive file from any new project to use the java libraries in the project, I tried create it in jdeveloper but no luck.
Thank you for any advice,
from your terminal - go to the directory where you have the files you want to jar and type the command
hope this helps see also: Creating a JAR File
You can use the following article to understand the way.
creating a Jar file
But still you can zip a file using windows zip utility or winzip and rename it as a jar file. It is not official but it works.
Assuming that the files that you want to reuse are related to ADF you should read about using ADF Libraries to increase reusability. See: http://docs.oracle.com/cd/E16162_01/web.1112/e16182/reusing_components.htm#BEIGHHCG
No matter how big or small you project is, the best answer to this question IMHO is a build tool. I would recommend maven, it is a great tool. It will take some time to get into and it will probably slow down your pace at first but the rewards of knowing how to use a tool like that are very big.
http://maven.apache.org/