It is always recommended the user has the most up-to-date version of Java. It can solve many issues that cannot be solved by clearing the java cache. Here is how to check that the most up to date (recommended) version is installed.
Instructions - Please open your web browser before proceeding. (Chrome, Internet Explorer, Mozilla Firefox)
1. Once your web browser is operation, please put http://java.com/en/download/installed.jsp in the address bar (As shown in the picture below).
2. Click on the Agree and Continue button (indicated by the arrow below).
3. Click the Run button on the window that pops up (indicated by the arrow below).
4. You should see a screen similar to this. If you do, you are done! If you don't, click here for Java installation instructions.