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javaswinguser-interfacejtextareacaret

Detecting text selection in JTextArea

I have a JTextArea and am deteching if any text is selection, if none is then two of the menu items are grayed out. The problem I have is, when I compile and open the application I have to click on the JTextArea first and then then the menu items are greyed out, if I don't they aren't even if no text is selected. I am using the following caret listener.

    textArea.addCaretListener(new CaretListener() {

        @Override
        public void caretUpdate(CaretEvent arg0) {
            int dot = arg0.getDot();
            int mark = arg0.getMark();
            if (dot == mark) {

                copy2.setEnabled(false);
                cut1.setEnabled(false);
            }
            else{
                cut1.setEnabled(true);
                copy2.setEnabled(true);
            }

        }
    });
Solution

  • You should setEnabled(false) on each of these menu items when you create them.