Dinesh on Java

Categories: JSTL

JSTL fn:startsWith() Function

JSTL startsWith Function returns true or false based on condition evaluation. The fn:startsWith() function determines whether an input string starts with a specified substring.

Syntax:
The fn:startsWith() function has following syntax:

boolean startsWith(java.lang.String, java.lang.String)

JST StartsWith Function Example-

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>JSTL StartsWith Function Example</title>
</head>
<body>
  <c:set var="array1" value="${fn:startsWith('Hi My name is Dinesh', 'Hi ')}">
</body>
</html>

Output: true

As you can see above, fn:startsWith() takes two Strings as input parameters.

First parameter in JSTL startsWith function is the target String which needs to be validated.

Second parameter in JSTL startsWith function is the specified string that needs to be matched with starting character sequence of the target string.

If target string starts with same character sequence like the specified string than JSTL startsWith function returns true otherwise returns false.

<<Previous << || Index || >>Next >>

Dinesh Rajput

Dinesh Rajput is the chief editor of a website Dineshonjava, a technical blog dedicated to the Spring and Java technologies. It has a series of articles related to Java technologies. Dinesh has been a Spring enthusiast since 2008 and is a Pivotal Certified Spring Professional, an author of a book Spring 5 Design Pattern, and a blogger. He has more than 10 years of experience with different aspects of Spring and Java design and development. His core expertise lies in the latest version of Spring Framework, Spring Boot, Spring Security, creating REST APIs, Microservice Architecture, Reactive Pattern, Spring AOP, Design Patterns, Struts, Hibernate, Web Services, Spring Batch, Cassandra, MongoDB, and Web Application Design and Architecture. He is currently working as a technology manager at a leading product and web development company. He worked as a developer and tech lead at the Bennett, Coleman & Co. Ltd and was the first developer in his previous company, Paytm. Dinesh is passionate about the latest Java technologies and loves to write technical blogs related to it. He is a very active member of the Java and Spring community on different forums. When it comes to the Spring Framework and Java, Dinesh tops the list!