title: Download ".java" files only from the given website/url
body: <p>For some research purpose, I want to download 1000 java classes (".java") files from the given website. I don't want to do this manually.</p>
  
  <p>For example, below has many Java Source files which I want to get using scripting/programming. I've worked with Linux shell scripts, PHP, and Java. So any solution using these is appreciated.</p>
  
  <p><a href="http://www.cs.uic.edu/~sloan/CLASSES/java/" rel="nofollow">http://www.cs.uic.edu/~sloan/CLASSES/java/</a></p>
  
  <p>Thanks!</p>