Edit GridData in Java using SWT eclipse?
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I was given a code which uses GridData as shown below:

    public DetailView(Composite parent) {
    		carModel = new Composite(parent, SWT.NONE);
    		carModel.setLayoutData(new GridData(GridData.FILL_BOTH));
    		carModel.setLayout(new GridLayout());
    }

    public void constructView() {
    		carModelViewer = new TableViewer(carModelComposite, SWT.BORDER);
    		CarModelProvider = new carModelContentProvider();
    		carModelViewer.setContentProvider(carModelProvider);
    		carModelViewer.setLabelProvider(new CarModelLabelProvider());
    		
    		Table carModel = carModelViewer.getTable();
    		carModel.setHeaderVisible(true);
    		carModel.setLinesVisible(true);
    		carModel.setLayoutData(new GridData(GridData.FILL_BOTH));
    		
    		TableColumn carModelColumn = new TableColumn(carModel, SWT.LEFT);
    		carModelColumn.setText("Model:");
    		carModel.pack();
    }

I wanted to know if its possible to edit the cells in the UI of the application. I tried reading the API and found two methods:
1. `setCellEditor()`
2. `setCellModifier()`
but am not sure about the parameters. Any help??