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Java – String indexOf(String str) Method

Description

This method returns the index within this string of the first occurrence of the specified substring. If it does not occur as a substring, -1 is returned.

Syntax

Here is the syntax of this method −

int indexOf(String str)

Parameters

Here is the detail of parameters −

str − a string.

Return Value

See the description.

Example

Live Demo

import java.io.*;
public class Test {

   public static void main(String args[]) {
      String Str = new String("Welcome to Tutorialspoint.com");
      String SubStr1 = new String("Tutorials");
      System.out.println("Found Index :" + Str.indexOf( SubStr1 ));
   }
}

This will produce the following result −

Output

Found Index :11

java_strings.htm