How can i participate in a real project programming? -Rather than a daily job-

Answer 1

Spend atleast an hour every day, by the end of a week or two you will be able to come up with some good mini project.

Take more time to build on that and create something you were longing for some time now.

Answer 2

You could work on an open source project such as Wograld and update it to work with the latest Java Version. There are plenty of small (1-20 developer) projects looking for help.