Highlighting text in a JTextArea

[wxdqz]

I have a text area that is populated with some data. It allows the user tomake updates andsave it back to the database. They would like to have all current changeto be "highlighted"until the have saved. I can't use caret position and selection, becausethe edits can be in multipleareas of the same text field. In addition, if the text were selected, itwould be replaced with the nextkeystroke.Does anyone have any suggestions?Thanks,Tom