Welcome to JavaRanch.
There may be more problems, but for starters, note that
string comparisons are done using the "equals" method in
Java, not using the "==" operator. So wherever you have something like "if (src=="Clear")" you need to replace that with "if (src.equals("Clear")".
On an unrelated note, please go through
this page to help you get the most out of the JavaRanch Saloon, in particular
CarefullyChooseOneForum,
UseAMeaningfulSubjectLine and
UseCodeTags.