Par file deployed without code

Question

Hi Experts,
Our portal version is SAP EP 7.02 SP23.
We have a custom par file developed. Now we want to do changes to it.
When I try to download the custom par file. It contains only custom jar file (in that jar file there is only one class file.).  how  can I customize this par file.
I believe the developer who developed this applicaiton has not deployed the par file with the code. Generally from deploying through NWDS, we need to check the deploy par file with code check box.
Now we don't that code available in NWDS. We have only the par file which is deployed in the portal server.
Can you please throw some lights like is there any possiblity to customize this particular par file. If it is possible please let me know , how to achieve this.
Thank you,
Raghu

Answer 1

Hi,
To import a par file, from NWDS, select File - Import and choose the PAR file option to import the PAR file into NWDS.
Also, when you import the PAR file into your NWDS, the necessary jar files are not usually copied over. You will have manually import them into your project structure.
If you unzip the original par file, you can find the needed jar files there under the lib folder.
Basically if you do not have the source code, you will need to use a decompilar (search java decompiler in google) in order to decompile the .class files that are inside the jar.
Then modify the code, compile it and pack it back
You will find the .class files in jar files which reside in the following paths in your par files:
\PORTAL-INF\lib
\PORTAL-INF\private\lib
Follow this links to see the stucture and building par files:
http://help.sap.com/saphelp_NW70EHP1/helpdata/en/bb/1bb8428e05c86ae10000000a155106/frameset.htm
http://help.sap.com/saphelp_NW70EHP1/helpdata/en/44/46bae270e20597e10000000a155369/content.htm
Thanks,
Tal