Supported Character Encodings in JDK

This section provides a tutorial example on how to display a list character encodings supported by JDK with the java.nio.charset.Charset.availableCharsets() method.

JDK uses the java.nio.charset.Charset class to represent a character encoding, with both encode() method and decode() method. It also provides a method, availableCharsets(), to return all supported encodings. Here is a program to display all the supported character encodings in JDK:

/* Encodings2.java
 - Copyright (c) 2014, HerongYang.com, All Rights Reserved.
 */
import java.nio.charset.*;
import java.util.*;
class Encodings2 {
   public static void main(String[] arg) {
      SortedMap<String,Charset> m = Charset.availableCharsets();
      Set<String> k = m.keySet();
      System.out.println("Canonical name, Display name,"
         +" Can encode, Aliases");
      Iterator<String> i = k.iterator();
      while (i.hasNext()) {
         String n = i.next();
         Charset e = m.get(n);
         String d = e.displayName();
         boolean c = e.canEncode();
         System.out.print(n+", "+d+", "+c);
         Set<String> s = e.aliases();
         Iterator<String> j = s.iterator();
         while (j.hasNext()) {
            String a = j.next();         
            System.out.print(", "+a);
         }
         System.out.println("");
      }
   }
}

Output:

Canonical name, Display name, Can encode, Aliases
Big5, Big5, true, csBig5
Big5-HKSCS, Big5-HKSCS, true, big5-hkscs, Big5_HKSCS, big5hkscs
EUC-CN, EUC-CN, true
EUC-JP, EUC-JP, true, eucjis, x-eucjp, csEUCPkdFmtjapanese, eucjp, 
   Extended_UNIX_Code_Packed_Format_for_Japanese, x-euc-jp, euc_jp
euc-jp-linux, euc-jp-linux, true, euc_jp_linux
EUC-KR, EUC-KR, true, ksc5601, 5601, ksc5601_1987, ksc_5601, 
   ksc5601-1987, euc_kr, ks_c_5601-1987, euckr, csEUCKR
EUC-TW, EUC-TW, true, cns11643, euc_tw, euctw
GB18030, GB18030, true, gb18030-2000
GBK, GBK, true, GBK
ISCII91, ISCII91, true, iscii, ST_SEV_358-88, iso-ir-153, 
   csISO153GOST1976874
ISO-2022-CN-CNS, ISO-2022-CN-CNS, true, ISO2022CN_CNS
ISO-2022-CN-GB, ISO-2022-CN-GB, true, ISO2022CN_GB
ISO-2022-KR, ISO-2022-KR, true, ISO2022KR, csISO2022KR
ISO-8859-1, ISO-8859-1, true, iso-ir-100, 8859_1, ISO_8859-1, ISO8859_1,
   819, csISOLatin1, IBM-819, ISO_8859-1:1987, latin1, cp819, ISO8859-1,
   IBM819, ISO_8859_1, l1
ISO-8859-13, ISO-8859-13, true
ISO-8859-15, ISO-8859-15, true, 8859_15, csISOlatin9, IBM923, cp923, 
   923, L9, IBM-923, ISO8859-15, LATIN9, ISO_8859-15, LATIN0, 
   csISOlatin0, ISO8859_15_FDIS, ISO-8859-15
ISO-8859-2, ISO-8859-2, true
ISO-8859-3, ISO-8859-3, true
ISO-8859-4, ISO-8859-4, true
ISO-8859-5, ISO-8859-5, true
ISO-8859-6, ISO-8859-6, true
ISO-8859-7, ISO-8859-7, true
ISO-8859-8, ISO-8859-8, true
ISO-8859-9, ISO-8859-9, true
JIS0201, JIS0201, true, X0201, JIS_X0201, csHalfWidthKatakana
JIS0208, JIS0208, true, JIS_C6626-1983, csISO87JISX0208, x0208, 
   JIS_X0208-1983, iso-ir-87
JIS0212, JIS0212, true, jis_x0212-1990, x0212, iso-ir-159, 
   csISO159JISC02121990
Johab, Johab, true, ms1361, ksc5601_1992, ksc5601-1992
KOI8-R, KOI8-R, true
Shift_JIS, Shift_JIS, true, shift-jis, x-sjis, ms_kanji, shift_jis, 
   csShiftJIS, sjis, pck
TIS-620, TIS-620, true
US-ASCII, US-ASCII, true, IBM367, ISO646-US, ANSI_X3.4-1986, cp367, 
   ASCII, iso_646.irv:1983, 646, us, iso-ir-6, csASCII, ANSI_X3.4-1968,
   ISO_646.irv:1991
UTF-16, UTF-16, true, UTF_16
UTF-16BE, UTF-16BE, true, X-UTF-16BE, UTF_16BE, ISO-10646-UCS-2
UTF-16LE, UTF-16LE, true, UTF_16LE, X-UTF-16LE
UTF-8, UTF-8, true, UTF8
windows-1250, windows-1250, true
windows-1251, windows-1251, true
windows-1252, windows-1252, true, cp1252
windows-1253, windows-1253, true
windows-1254, windows-1254, true
windows-1255, windows-1255, true
windows-1256, windows-1256, true
windows-1257, windows-1257, true
windows-1258, windows-1258, true
windows-936, windows-936, true, ms936, ms_936
windows-949, windows-949, true, ms_949, ms949
windows-950, windows-950, true, ms950

Last update: 2014.

Table of Contents

 About This JDK Tutorial Book

 Downloading and Installing JDK 1.8.0 on Windows

 Downloading and Installing JDK 1.7.0 on Windows

 Downloading and Installing JDK 1.6.2 on Windows

 Java Date-Time API

 Date, Time and Calendar Classes

 Date and Time Object and String Conversion

 Number Object and Numeric String Conversion

 Locales, Localization Methods and Resource Bundles

 Calling and Importing Classes Defined in Unnamed Packages

 HashSet, Vector, HashMap and Collection Classes

Character Set Encoding Classes and Methods

 What Is Character Encoding?

Supported Character Encodings in JDK

 Charset.encode() - Method to Encode Characters

 Running EncodingSampler.java with CP1252 Encoding

 Running EncodingSampler.java with ISO-8859-1 and US-ASCII

 Running EncodingSampler.java with UTF-8, UTF-16, UTF16-BE

 Running EncodingSampler.java with GB18030

 Charset.decode() - Method to Decode Byte Sequences

 Character Set Encoding Maps

 Encoding Conversion Programs for Encoded Text Files

 Socket Network Communication

 Datagram Network Communication

 DOM (Document Object Model) - API for XML Files

 SAX (Simple API for XML)

 DTD (Document Type Definition) - XML Validation

 XSD (XML Schema Definition) - XML Validation

 XSL (Extensible Stylesheet Language)

 Message Digest Algorithm Implementations in JDK

 Private key and Public Key Pair Generation

 PKCS#8/X.509 Private/Public Encoding Standards

 Digital Signature Algorithm and Sample Program

 "keytool" Commands and "keystore" Files

 KeyStore and Certificate Classes

 Secret Key Generation and Management

 Cipher - Secret Key Encryption and Decryption

 The SSL (Secure Socket Layer) Protocol

 SSL Socket Communication Testing Programs

 SSL Client Authentication

 HTTPS (Hypertext Transfer Protocol Secure)

 Outdated Tutorials

 References

 PDF Printing Version