@Override
public void focusLost(FocusEvent e) {
if (field.getText().trim().equals("")) {
field.setText(GUI.INPUT_NUMBER);
field.setForeground(Color.GRAY);
}
}
@Override
public void focusGained(FocusEvent e) {
if (field.getText().trim().equals(GUI.INPUT_NUMBER)) {
field.setText("");
field.setForeground(Color.BLACK);
}
}