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Charset availableCharsets() method in Java with Examples

Last Updated : 28 Mar, 2019
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The availableCharsets() method is a built-in method of the java.nio.charset constructs a sorted map from the canonical charset names to charset objects. The map thus returned will have one entry for every charset. In case there are multiple entries by the same name, it only stores one of them which completely depends on the Java virtual machine. On every execution of the program, the output may be different if new charset providers are dynamically made available to the current Java virtual machine.


public static SortedMap availableCharsets()

Parameters: The function does not accepts any parameter.

Return Value: The function returns a map which is immutable, case-insensitive. It is from the canonical charset which names to charset objects.

Below is the implementation of the above function:

Program 1:

// Java program to demonstrate
// the above function
import java.nio.charset.Charset;
import java.util.Iterator;
import java.util.Map;
public class GFG {
    public static void main(String[] args)
        // Creates a map of charsets
        Map<String, Charset> charsets
            = Charset.availableCharsets();
        // Iterator to store the type
        Iterator<Charset> iterator
            = charsets.values().iterator();
        // Iterate till we get all the charsets
        while (iterator.hasNext()) {
            // Get the next
            Charset all = (Charset);
            // Displays the name
            System.out.print(all.displayName() + " ");


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