add the following function inside KeyHand class
public void keyTyped(java.awt.event.KeyEvent evt) {
// put your implementation here
}Because KeyHand implements KeyListener, all the methods defined in KeyListener should be implemented in KeyHand.
public void keyTyped(java.awt.event.KeyEvent evt) {
// put your implementation here
}Because KeyHand implements KeyListener, all the methods defined in KeyListener should be implemented in KeyHand.
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