What is a CharsetEncoder?

The ‘CharsetEncoder’ class is imported from ‘java.nio.charset’ package.

The basic function of the class is to use a certain character set or an encoding known as a Charset. It converts the character sequences into byte format. This class is commonly used for activities such as writing textual data to files, transmitting data over the network, and encoding/decoding data between different character encodings.

CharsetEncoder translates a character input to a byte output. The internal character representation of Java which is usually UTF-16, is encoded and converted into the byte representation of the chosen character encoding (eg. UTF-8, etc).

Syntax of CharsetEncoder

public abstract class CharsetEncoder extends Object

For the purpose of character encoding and decoding, java offers a number of classes in the ‘java.nio.charset’ package. The ‘CharsetEncoder’ class of this package performs the important task of encoding. In this article, let us understand this class, its syntax, different methods, and some examples of error handling and optimization techniques.