Show some text when mouse hover over a component

Question

Hi,
I would like to show a couple of lines of text, just to the right hand-side of the component (kind of a mini-pop up menu) everytime the mouse hovers on that component. The focuslistener is in place and working, but I don't know how to implement this 'popup' menu. I don't need to select any of the lines or perform any action on them, just showing them
thanks

Answer 1

thanks, that's the component I was looking for (assuming I can now change the fonts, colour etc)
I have done the following and it kind of works: it should highlight the text and show the tooltip. However, it kind of gets stuck every now and then...two things: it takes some time before the tooltip appears (1 sec): is there a way to make it immediate, simultanous to the highligh? also, I have a few Jtextfield, as you may remember..as I hover the mouse over each of them, it all works fine, but when I go back to a jtextfield previously hovered over and highlighted, nothing happens, until I randomly click around and then works again. Any ideas? thanks a lot
myJTextField.addMouseListener(new MouseAdapter(){
                 public void mouseEntered(MouseEvent e) {
                    ((JTextField) e.getSource ()).requestFocus();
                    ((JTextField) e.getSource ()).selectAll(); // highlight the text
                    ((JTextField) e.getSource ()).setToolTipText("text");