Develop a plagiarism detector software for msword and pdf documents

The objective of this project is simple. You will have to develop a plagiarism detection software for MSWord and PDF documents. The application must be developed using Java SE. The detection of plagiarism can be done in two ways: First the user must be able to check for plagiarism on any document (.doc, .docx and .pdf) with existing works already on the web online. Second, the user must be able to compare two documents for similarities. Very important: Please ensure that there are clean codes with comments to help to understand how the architecture of the software works. I would highly recommend anyone who would like to do this job to have a look at plagiarism software already on the net, both standalone and online ones. Just google it. If you have any question, please do not hesitate to contact me.