The reason you cannot run the jar file, your hosting provider doesn't support the execution of the jar file . To overcome this problem, you should contact the customer support of CCAvenue and ask them to provide the integration kit which only contain php files .
They have a kit, and they will provide it if you call them (if you need it quickly) or send them by mail. The new kit contains the following files
1. adler32.php 2. Aes.php 3. Checkout.php 4. Index.html 5. redirecturl.php
They have such a set for all types of programmers.
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