The fn:startsWith() function determines if an input string starts with a specified substring.
The fn:startsWith() function has the following syntax −
boolean startsWith(java.lang.String, java.lang.String)
Following example explains the functionality of the fn:startsWith() function −
<%@ taglib uri = "http://java.sun.com/jsp/jstl/core" prefix = "c" %> <%@ taglib uri = "http://java.sun.com/jsp/jstl/functions" prefix = "fn" %> <html> <head> <title>Using JSTL Functions</title> </head> <body> <c:set var = "string" value = "Second: This is first String."/> <c:if test = "${fn:startsWith(string, 'First')}"> <p>String starts with First</p> </c:if> <br /> <c:if test = "${fn:startsWith(string, 'Second')}"> <p>String starts with Second</p> </c:if> </body> </html>
You will receive the following result −
String starts with Second