Java’s String class encapsulates an array of bytes. A byte can be converted to a char, in which case, String becomes an array of characters used to compose words, sentences, or any other data you want ...

It checks whether the string contains the specified sequence of char values. If yes then it returns true else false. It throws NullPointerException of ‘s’ is null. This method searches the specified ...

This document provides an overview of the methods available in Java's String and StringBuilder classes, including descriptions of their functionalities. str.charAt(int index) Returns the character at ...