Unless there are millions of files, I like to go one by one and write the javadoc/comment about what it does (if it doesn't already have it, which is usually th

Unless there are millions of files, I like to go one by one and write the javadoc/comment about what it does (if it doesn't already have it, which is usually the case, if it does just check if it's still correct). This way you can see what elements you have, sometimes even find minor bugs or improvements.