Very Easy Question: How to view source code of JAR file

Hi Experts,
1) Can we can see the content of JAR file?
2) How we can we see content of JAR file?
3) I have with me JAR file. It is sap.compcui_gpoadp~ObjectAndDataProvider.JAR. I have to make some changes in the JAR file source code. How I can find the source code?
I tried to see the source code using NWDS. However, I can not see the code.
Regards,
Gaurav

>
Gary wrote:
> Can I make changes in the source code of JAR file? Can I make changes in the code?
You cannot do this by simple repacking/rearchiving of JAR, because it contains special descriptor with fingerprint. In general, JAR is unmodifiable, however, you can create a new one with modified sources.
You can try to import the JAR in some Java project in Eclipse, for example. Then make your changes and use the Eclipse's Export JAR wizard in order to repack the modified source Java files in a new JAR.
>
Gary wrote:
> Can I rename the JAR file and still it will usable? Please confirm.
I general, yes, the operation is allowed. However, you cannot do this with JAR deployed on some J2EE server or Portal, for example. Because there are references to it.
>
Gary wrote:
> Please let me know if by any chance I can see the content of JAR file in NWDS.
Yes, sure. Use Import from Archive wizard in Eclipse. Or add the JAR in the class path of some Java project and Eclipse will show you the content of it.
BR, Sergei

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