Editable not working

Question

I can't seem to get editable to work like it should: when you
click on an already selected item in the tree, it should go into
the edit mode. The default behavior is very poor: it always goes
into edit mode on any item selection.

Answer 1

Well, I don't think the snippet you posted can be EXACTLY your real code, because JComponent is abstract: you can't say "new JComponent". When I try running your code, if I replace the first two lines with simply
JComponent components=new JTextArea()The area is, in fact, editable, and I don't see any strange shadow areas. Perhaps we'd have to see what the frame or panel is that you're trying to put this on.
That said, you're making things hard for yourself in a number of ways. Here's the code I generally use to make a scrollable text area:
JTextArea area=new JTextArea(4,40);
area.setLineWrap(true);
area.setWrapStyleWord(true);
content.add(new JScrollPane(area),BorderLayout.CENTER); // or wherever we need to put itHard-setting the preferred size of the JTextArea makes scrolling work strange: you scroll an area of size equal to preferredSize, but if you've entered more text than that, it won't scroll. Perhaps when you say that you can't edit you really mean that you can't get to text that gets written off the bottom? Especially given the very small size you give: Do you realize that Dimension(3,25) means 3 pixels wide -- which is perhaps half a character -- and 25 pixels tall, which is maybe a line and a half?