Java String Methods

String indexOf() method

In java, String indexOf( ) method returns the index of the input char, int or substring. In case the required char, int or substring is not found -1 is returned.



public class IndexOfDemo {

        public static void main(String[] args) {

               String str = "This is java tutorial";

               int index = str.indexOf('j');
               int index1 = str.indexOf("ava");
               int index2 = str.indexOf("is",4);

               System.out.println("index"+ index + index1+ index2);

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