JSP pages are provided in Struts framework?

Hi friends, 

Struts provides four major JSTLs(JSP standrads Tag Libraries). They are used as JSP helper. Those tag libraries are descrided in TLD (Tag Library Descriptor) files..
1 : struts-html.tld - Tags to help generating HTML elements.
2 : struts-form.tld - Tags to generating HTML FORM elements.
3 : struts-bean.tld - Tags representing some JavaBeans like: cookie, header, message, and page.
4 : struts-logic.tld - Tag representing boolean logic operations.

Thanks.