Swing JTextArea插入符号事件

Question

Are there any events fired when caret is "blinking"?

(not when position changed or property changed etc, but just blink of caret horizontal line)

How JTextField displays hint (which is disappears when user starts type):

and the same functionality used in JTextArea:

As you can see, while caret is blinkng, the first letter is overwritten.

Answer 1

Check the method of DefaultCaret

protected synchronized void damage(Rectangle r)

You can override it and add your code there

Answer 2

It would be great to repaint the hint while caret is blinking in case of JTextArea

Check out Text Prompt for a solution that display a "hint" in the text field and doesn't not require you to play with the Caret.