{
//created table with SWT.FULL_SELECTION
Table table = new Table(contentArea, SWT.BORDER | SWT.FULL_SELECTION);

//create table viewer
viewer = new TableViewer(table);

viewer.setContentProvider(new IStructuredContentProvider());

//1st column
TableViewerColumn column1 = new TableViewerColumn(viewer, SWT.NONE);
        column1 .getColumn().setText("Coulm 1");
        viewer.getColumn().setWidth(200);

//2nd Column
TableViewerColumn column2 = new TableViewerColumn(viewer, SWT.NONE);
column2.getColumn().setText("Column 2");
column2.getColumn().setWidth(200);

//some other code
}

{
    //created table with SWT.FULL_SELECTION
    Table table = new Table(contentArea, SWT.BORDER | SWT.FULL_SELECTION);

    //create table viewer
    viewer = new TableViewer(table);

    viewer.setContentProvider(new IStructuredContentProvider());

    //1st column
    TableViewerColumn column1 = new TableViewerColumn(viewer, SWT.NONE);
            column1 .getColumn().setText("Coulm 1");
            viewer.getColumn().setWidth(200);

    //2nd Column
    TableViewerColumn column2 = new TableViewerColumn(viewer, SWT.NONE);
    column2.getColumn().setText("Column 2");
    column2.getColumn().setWidth(200);

    CellNavigationStrategy strategy = new CellNavigationStrategy() {

        @Override
        public ViewerCell findSelectedCell(ColumnViewer viewer,
                ViewerCell currentSelectedCell, Event event) {
            ViewerCell cell = null;
            switch (event.keyCode) {
            case SWT.TAB:
                if (event.stateMask == 0) {
                    cell = currentSelectedCell.getNeighbor(ViewerCell.RIGHT, true);
                } else {
                    cell = currentSelectedCell.getNeighbor(ViewerCell.LEFT, true);
                }
                break;
            }

            if (cell != null) {
                TableColumn t = runtimesTableViewer.getTable().getColumn(
                        cell.getColumnIndex());
                runtimesTableViewer.getTable().showColumn(t);
            }
            return cell;

        }

        @Override
        public boolean isNavigationEvent(ColumnViewer viewer, Event event) {
            switch (event.keyCode) {
            case SWT.TAB:
                return true;
            default:
                return super.isNavigationEvent(viewer, event);
            }
        }

    };

    TableViewerFocusCellManager focusCellManager = new TableViewerFocusCellManager(viewer,new FocusCellOwnerDrawHighlighter(runtimesTableViewer), strategy);

    ColumnViewerEditorActivationStrategy actSupport = new ColumnViewerEditorActivationStrategy(runtimesTableViewer) {

        protected boolean isEditorActivationEvent(ColumnViewerEditorActivationEvent event) {
            return event.eventType == ColumnViewerEditorActivationEvent.TRAVERSAL 
                || event.eventType == ColumnViewerEditorActivationEvent.MOUSE_CLICK_SELECTION                                   
                || (event.eventType == ColumnViewerEditorActivationEvent.KEY_PRESSED && event.keyCode == SWT.TAB) 
                || event.eventType == ColumnViewerEditorActivationEvent.PROGRAMMATIC;
           }
    };

    TableViewerEditor.create(viewer, focusCellManager, actSupport, ColumnViewerEditor.TABBING_HORIZONTAL
            | ColumnViewerEditor.TABBING_MOVE_TO_ROW_NEIGHBOR
            | ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION);

    runtimesTableViewer.getColumnViewerEditor().addEditorActivationListener(new ColumnViewerEditorActivationListener(){

        @Override
        public void afterEditorActivated(
                ColumnViewerEditorActivationEvent event) {

        }

        @Override
        public void afterEditorDeactivated(
                ColumnViewerEditorDeactivationEvent event) {

        }

        @Override
        public void beforeEditorActivated(
                ColumnViewerEditorActivationEvent event) {
            ViewerCell cell = (ViewerCell) event.getSource();
            runtimesTableViewer.getTable().showColumn(viewer.getTable().getColumn(cell.getColumnIndex()));
        }

        @Override
        public void beforeEditorDeactivated(
                ColumnViewerEditorDeactivationEvent event) {

        }

    });