Question

in a GUI, as a user types an input, the upper case letters are immediately converted to lower case and shown in the textfield

what kind of eventlistener should be used for the letter conversion

what kind if eventlistener should be used to immediately show it in the textfield

explain why you picked it

JAVA

Answer 1

I suggest you to use the KeyListener in java to convert the letters when user typing.

The java Key Listener is notified whenever you changed the state of the key. it is notified aganist key event.

The key listener interface is found in java.awt.event package. It has three methods;

1. KeyPressed(KeyEvent e)

2. KeyReleased(KeyEvent e)

3. KeyTyped(KeyEvent e).

so using these you can check if a key is typed , you can capitalize the words accordingly.