StringBuilder in Java (java.lang.StringBuilder)

StringBuilder is a standard library class in Java which can be used in handling string data and is alternative to String Buffer and String data type.

The String class in Java creates an immutable object i.e once a string object is created it cannot be altered.To create a string which can be altered,String Builder Class is used,it creates a mutable sequence of characters.The java.lang.StringBuilder Class contains many methods which can perform various operations such as insert,append,trim,find i...