How do you check if a string contains a string in Java?

The includes() method returns true if a string contains a specified string . Otherwise it returns false . The includes() method is case sensitive.

Java String contains() Method The contains() method checks whether a string contains a sequence of characters . Returns true if the characters exist and false if not.

The contains() method in Java is used to search the substring in a given String. Returns: If the substring is found in the specified String, then it returns a true value; otherwise, it returns​ a false value.

You can use contains(), indexOf() and lastIndexOf() method to check if one String contains another String in Java or not. If a String contains another String then it’s known as a substring. The indexOf() method accepts a String and returns the starting position of the string if it exists, otherwise, it will return -1.