Hi Krishna,
Incase you are referring to JAVA Component DVD, this will be required only incase you perform an Installation of new JAVA based SAP system or want to deploy any new JAVA add-in.
These JAVA add-ins can be alternative downloaded directly from SAP MArketplace.
For upgrade in your environment you need to follow steps suggested by RB.
By using MOPZ we ensure that all the required packages for upgrade are downloaded and places under /usr/sap/trans/EPS/in folder. Upgrade tool will pick up the required packages from the /EPS/in folder.
Hope this helps.
Regards,
Deepak Kori