I want to add columns to my HtmlScrollerDataTable.

Following is my code:




scrollableDataTable.
setId("fiPriceController_scrollableDataTable");

scrollableDataTable.setHeader(column1);

scrollableDataTable.setHeight("100%");

scrollableDataTable.setWidth("100%");

scrollableDataTable.setRendered(true);



I got error when I tried to do the following:

scrollableDataTable.getChildren().add(column); or

scrollableDataTable.getChildren().add(columnGroup);



At Runtime I got the following error:


java.lang.NullPointerException

at javax.faces.component.UIComponentBase.

findComponent(UIComponentBase.java:551)



Can any one help me out in solving this problem.

If you have any sample code to add columnGroup or

column, it will help me a lot. Thank you.

Please use html tags to format code blocks.