Why stringbuffer is used

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Serialization and Deserialization. Java Library Functions. Basics Of Digital Components. Types of Computer Networks. Classical Synchronization Problem. What are Semaphores? StringBuffer class is used to create a mutable string object. It means, it can be changed after it is created. It represents growable and writable character sequence. It is similar to String class in Java both are used to create string, but stringbuffer object can be changed.

So StringBuffer class is used when we have to make lot of modifications to our string. It is also thread safe i. StringBuffer defines 4 constructors. The method takes boolean, char, int, long, Strings, etc. This method replaces the characters in a substring of this StringBuffer with characters in the specified String. The specified character of the sequence currently represented by the string buffer, as indicated by the index argument, is returned. Returns the index within this string of the first occurrence of the specified substring, starting at the specified index.

Returns a new String that contains a subsequence of characters currently contained in this StringBuffer. If we try to concatenate the string object, it will not be altered. However, a StringBuffer in java creates mutable objects. Thus, it can be altered. StringBuffer in java creates modifiable string objects. Thus, we can use StringBuffer to append, replace, reverse, concatenate and modify the sequence of characters or strings.

The methods under the StringBuffer class adhere to these functions. To sum up, StringBuffer in java is used only when multiple threads are modifying the contents of the StringBuffer. It is faster than String. In this article, we learned every detail about Java StringBuffer. Data Science. Data Science All Courses M.