String _ = comboBox.getSelectedItem().toString(); if (!(_==null))
Object a = comboBox.getSelectedItem(); if (!(a.equals(null))) { String _ = a.toString();
	public void actionPerformed(ActionEvent ae)	{		String _ = comboBox.getSelectedItem().toString();		if (!(_==null))			tf.setText(_.substring(0,_.indexOf(" ")));		}