if (text != labelText)
if (text != newText)
  public void setText(String text)  {    if (text != labelText)      {	String oldText = labelText;	labelText = text;	firePropertyChange(TEXT_CHANGED_PROPERTY, oldText, labelText);	if (labelText != null && labelText.length() <= underlinedChar)	  setDisplayedMnemonicIndex(labelText.length() - 1);      }  }