Search the repository hosting platforms like - (Git Hub) Build software better, together. You can simply search all the repositories with certain keyword. For example searching "banking" and choosing the language as "java" gives you so many online banking projects. This gives you multiple implementation of same project. I advice you to go through multiple implementation of same projects so that you can understand the design issues with all of them. You will understand a lot more and you can uses a lot of good design and coding principles in your project.


That said, there are many other websites with source-code. You can just Google it. One of my fav is : Java mini projects With Source Code