string is imutable

StringBuilder is used to represent a mutable string of characters. Mutable means the string which can be changed. So String objects are immutable but StringBuilder is the mutable string type. It will not create a new modified instance of the current string object but do the modifications in the existing string object. The complete functionality of StringBuilder is provided by StringBuilder class which is present in System.Text namespace.

Need of the StringBuilder: As stated above that the String class objects are immutable which means that if the user will modify any string object it will result into the creation of a new string object. It makes the use of string costly. So when the user needs the repetitive operations on the string then the need of StringBuilder come into existence. It provides the optimized way to deal with the repetitive and multiple string manipulation operations.

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Bidyasagar Mishra7y ago
Accepted answer
StringBuilder is used to represent a mutable string of characters. Mutable means the string which can be changed. So String objects are immutable but StringBuilder is the mutable string type. It will not create a new modified instance of the current string object but do the modifications in the existing string object. The complete functionality of StringBuilder is provided by StringBuilder class which is present in System.Text namespace.

Need of the StringBuilder: As stated above that the String class objects are immutable which means that if the user will modify any string object it will result into the creation of a new string object. It makes the use of string costly. So when the user needs the repetitive operations on the string then the need of StringBuilder come into existence. It provides the optimized way to deal with the repetitive and multiple string manipulation operations.
+2