Java – String startsWith() Method

Description:

This method has two variants and tests if a string starts with the specified prefix beginning a specified index or by default at the beginning.

Syntax:

Here is the syntax of this method:

public boolean startsWith(String prefix, int toffset)

or

public boolean startsWith(String prefix)

Parameters:

Here is the detail of parameters:

  • prefix — the prefix to be matched.
  • toffset — where to begin looking in the string.

Return Value :

  • It returns true if the character sequence represented by the argument is a prefix of the character sequence represented by this string; false otherwise.

Example:

import java.io.*;

public class Test{
   public static void main(String args[]){
      String Str = new String("Welcome to Dineshonjava.com");

      System.out.print("Return Value :" );
      System.out.println(Str.startsWith("Welcome") );

      System.out.print("Return Value :" );
      System.out.println(Str.startsWith("Dinesh") );

      System.out.print("Return Value :" );
      System.out.println(Str.startsWith("Dineshon", 11) );
   }
}

This produces following result:

output:
Return Value :true
Return Value :false
Return Value :true
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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!

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