public void actionPerformed(ActionEvent e) { ICFDbTestTableObj selectedInstance = getSwingFocusAsTable(); if (selectedInstance != null) { ICFDbTestTableObj retObj = selectedInstance.testInstObjFuncWithArg((short) 10, new Short((short) 10)); String msg; if (retObj != null) { msg = "testInstObjFuncWithArg() returned a " + retObj.getClass().getName() + " named " + retObj.getObjName(); } else { msg = "testInstObjFuncWithArg() returned null"; } JOptionPane.showMessageDialog(null, msg); } }