I want to have header and footer in a seperate Layout jsp and want to extent that in other jsp's rather than using <tiles:insert> tag for header and footer in all the layout jsp's.Can Layout JSPs in tiles be extended or inherited?
Yes, like I posted....you use a base definition. Then you create a new definition that extends base and includes the new elements that are unique for the instance.
Then in your struts config you set the forward to the definition. The definition will load the JSPs. I hope you aren't using tiles tags directly in your JSPs. The tiles tags should call the JSPs through a layout.