StringBuffer in java

Описание: In Java, StringBuffer is a class that provides a mutable sequence of characters. Unlike the immutable String class, which cannot be modified once created, StringBuffer allows you to perform various operations such as appending, inserting, deleting, and replacing characters in the sequence. The StringBuffer class is part of the java.lang package.

1. Mutable Character Sequence:
StringBuffer provides a mutable buffer for storing characters. This means you can modify the contents of a StringBuffer object without creating a new object.
2. Constructors:
StringBuffer has several constructors, but the most commonly used one is the default constructor that creates an empty StringBuffer.
3. Appending and Inserting:
You can append characters or other data types to the end of the StringBuffer using the append() method.
4. Deleting and Replacing:
The delete() method removes a range of characters from the StringBuffer.
5. Capacity and Length:
The capacity() method returns the current capacity of the StringBuffer.
The length() method returns the number of characters in the StringBuffer.

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