CharsetDecoder maxCharsPerByte() method in Java with Examples

The maxCharsPerByte() method is a built-in method of the java.nio.charset.CharsetDecoder class which returns the maximum number of characters that will be produced for each byte of input. This value may be used to compute the worst-case size of the output buffer required for a given input sequence.

Syntax:

public final float maxCharsPerByte()

Parameters: The function does not accepts any parameter.

Return Value: The function returns the maximum number of characters that will be produced for each byte of input.

Below is the implementation of the above function:

Program 1:

// Java program to demonstrate
// the above function

import java.nio.charset.*;
import java.util.Iterator;
import java.util.Map;

public class GFG {

    public static void main(String[] args)
    {

        // Gets the charset
        Charset charset = Charset.forName("ISO-2022-CN");

        // Get the CharsetDecoder
        CharsetDecoder decoder = charset.newDecoder();

        // Prints the maxCharsPerByte
        System.out.println("The maxCharsPerByte for "
                           + "ISO-2022-CN is "
                           + decoder.maxCharsPerByte());
    }
}

Output:

The maxCharsPerByte for ISO-2022-CN is 1.0

Program 2:

// Java program to demonstrate
// the above function

import java.nio.charset.*;
import java.util.Iterator;
import java.util.Map;

public class GFG {

    public static void main(String[] args)
    {

        // Gets the charset
        Charset charset = Charset.forName("x-windows-949");

        // Get the CharsetDecoder
        CharsetDecoder decoder = charset.newDecoder();

        // Prints the maxCharsPerByte
        System.out.println("The maxCharsPerByte for "
                           + "ISO-2022-CN is "
                           + decoder.maxCharsPerByte());
    }
}

Output:

The maxCharsPerByte for ISO-2022-CN is 1.0

Reference: https://docs.oracle.com/javase/9/docs/api/java/nio/charset/CharsetDecoder.html#maxCharsPerByte–