Get an ArrayList of all available character sets and their aliases in Java

GetCharsets.java

import java.util.Arrays;
import java.util.ArrayList;
import java.nio.charset.Charset;

public class GetCharsets {
  public static ArrayList<String> getCharsets() {
    String[] charsets = Charset.availableCharsets().keySet().toArray(new String[0]);
    ArrayList<String> allCharsets = new ArrayList<String>(Arrays.asList(charsets));
    for (String charset : charsets) {
      allCharsets.addAll(Charset.availableCharsets().get(charset).aliases());
    }
    return allCharsets;
  }
}