org.apache.commons.io

Class Charsets

java.lang.Object

org.apache.commons.io.Charsets

public class Charsets
extends Object

Charsets required of every implementation of the Java platform. From the Java documentation Standard charsets:

Every implementation of the Java platform is required to support the following character encodings. Consult the release documentation for your implementation to see if any other encodings are supported. Consult the release documentation for your implementation to see if any other encodings are supported.

• US-ASCII
  Seven-bit ASCII, a.k.a. ISO646-US, a.k.a. the Basic Latin block of the Unicode character set.
• ISO-8859-1
  ISO Latin Alphabet No. 1, a.k.a. ISO-LATIN-1.
• UTF-8
  Eight-bit Unicode Transformation Format.
• UTF-16BE
  Sixteen-bit Unicode Transformation Format, big-endian byte order.
• UTF-16LE
  Sixteen-bit Unicode Transformation Format, little-endian byte order.
• UTF-16
  Sixteen-bit Unicode Transformation Format, byte order specified by a mandatory initial byte-order mark (either order accepted on input, big-endian used on output.)

Since:

2.3

See Also:

Standard charsets

Field Summary

Fields

Modifier and Type	Field and Description
static Charset	ISO_8859_1 Deprecated. Use Java 7's StandardCharsets
static Charset	US_ASCII Deprecated. Use Java 7's StandardCharsets
static Charset	UTF_16 Deprecated. Use Java 7's StandardCharsets
static Charset	UTF_16BE Deprecated. Use Java 7's StandardCharsets
static Charset	UTF_16LE Deprecated. Use Java 7's StandardCharsets
static Charset	UTF_8 Deprecated. Use Java 7's StandardCharsets

Constructor Summary

Constructors

Constructor and Description
Charsets()

Method Summary

Modifier and Type	Method and Description
static SortedMap<String,Charset>	requiredCharsets() Constructs a sorted map from canonical charset names to charset objects required of every implementation of the Java platform.
static Charset	toCharset(Charset charset) Returns the given Charset or the default Charset if the given Charset is null.
static Charset	toCharset(String charsetName) Returns a Charset for the named charset.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ISO_8859_1

@Deprecated
public static final Charset ISO_8859_1

Deprecated. Use Java 7's StandardCharsets

CharEncodingISO Latin Alphabet No. 1, a.k.a. ISO-LATIN-1.

Every implementation of the Java platform is required to support this character encoding.

See Also:

Standard charsets

US_ASCII

@Deprecated
public static final Charset US_ASCII

Deprecated. Use Java 7's StandardCharsets

Seven-bit ASCII, also known as ISO646-US, also known as the Basic Latin block of the Unicode character set.

Every implementation of the Java platform is required to support this character encoding.

See Also:

Standard charsets

UTF_16

@Deprecated
public static final Charset UTF_16

Deprecated. Use Java 7's StandardCharsets

Sixteen-bit Unicode Transformation Format, The byte order specified by a mandatory initial byte-order mark (either order accepted on input, big-endian used on output)

Every implementation of the Java platform is required to support this character encoding.

See Also:

Standard charsets

UTF_16BE

@Deprecated
public static final Charset UTF_16BE

Deprecated. Use Java 7's StandardCharsets

Sixteen-bit Unicode Transformation Format, big-endian byte order.

Every implementation of the Java platform is required to support this character encoding.

See Also:

Standard charsets

UTF_16LE

@Deprecated
public static final Charset UTF_16LE

Deprecated. Use Java 7's StandardCharsets

Sixteen-bit Unicode Transformation Format, little-endian byte order.

Every implementation of the Java platform is required to support this character encoding.

See Also:

Standard charsets

UTF_8

@Deprecated
public static final Charset UTF_8

Deprecated. Use Java 7's StandardCharsets

Eight-bit Unicode Transformation Format.

Every implementation of the Java platform is required to support this character encoding.

See Also:

Standard charsets

Constructor Detail

Charsets

public Charsets()

Method Detail

requiredCharsets

public static SortedMap<String,Charset> requiredCharsets()

Constructs a sorted map from canonical charset names to charset objects required of every implementation of the Java platform.

From the Java documentation Standard charsets:

Returns:

An immutable, case-insensitive map from canonical charset names to charset objects.

Since:

2.5

See Also:

Charset.availableCharsets()

toCharset

public static Charset toCharset(Charset charset)

Returns the given Charset or the default Charset if the given Charset is null.

Parameters:

charset - A charset or null.

Returns:

the given Charset or the default Charset if the given Charset is null

toCharset

public static Charset toCharset(String charsetName)

Returns a Charset for the named charset. If the name is null, return the default Charset.

Parameters:

charsetName - The name of the requested charset, may be null.

Returns:

a Charset for the named charset

Throws:

UnsupportedCharsetException - If the named charset is unavailable