I have a requirement to compress/encrypt/calculate checksum of 2.5-20 GB file using JAVA.Is there any open source API's or How can I do this in an efficient way? Also,Performance and No data Loss should be very important thing here.please anyone can help me here to proceed this problem? Can Anyone is having the source code for the same please send it me

Hi Gowthami, I am writing the java application for encryption/compression which will be integerated in spring batch application to transfer large files.once it is done i will upload the source code here.

I think Collections is a implementation class not an interface where all the following methods implemented. sort,binarysearch,max,min,emptyList,emptySet,etc.... Collection is an super interface for all the interfaces Set,List,Map..