Object (Component component) { if (component instanceof CellEditorComponentWithBrowseButton) { final JTextField textField = (JTextField)((CellEditorComponentWithBrowseButton<?>)component).getChildComponent(); return textField.getText(); } else if (component instanceof JTextField) { return ((JTextField)component).getText(); } else if (component instanceof JComboBox) { return ((JComboBox<?>)component).getSelectedItem(); } else if (component instanceof JCheckBox) { return Boolean.valueOf(((JCheckBox)component).isSelected()); } throw new UnsupportedOperationException("editor control of type " + component.getClass().getName() + " is not supported"); }