cn.ponfee.commons.io

枚举 ByteOrderMarks

java.lang.Object

java.lang.Enum<ByteOrderMarks>

cn.ponfee.commons.io.ByteOrderMarks

所有已实现的接口:

Serializable, Comparable<ByteOrderMarks>

public enum ByteOrderMarks
extends Enum<ByteOrderMarks>

 BOM（byte order mark）是为UTF-16和UTF-32准备的，用于标记字节序（byte order）。
 微软在UTF-8中使用BOM是为了可以把UTF-8和ASCII等编码区分开，不含BOM的UTF-8才是标准形式
 http://www.unicode.org/faq/utf_bom.html
 
 BOM(byte-order mark) Encoding: 
   EF BB BF       UTF-8
   FF FE          UTF-16 (little-endian)
   FE FF          UTF-16 (big-endian)
   FF FE 00 00    UTF-32 (little-endian)
   00 00 FE FF    UTF-32 (big-endian)
 
 link sun.nio.cs.StandardCharsets
 

作者:

Ponfee

枚举常量概要

枚举常量

枚举常量和说明
UTF_16BE
UTF_16LE
UTF_32BE
UTF_32LE
UTF_8

方法概要

限定符和类型	方法和说明
static ByteOrderMarks	add(Charset charset, File file)
static ByteOrderMarks	add(Charset charset, String path)
static ByteOrderMarks	add(File file)
static ByteOrderMarks	add(String path)
byte[]	bytes()
Charset	charset()
static byte[]	get(Charset charset)
static boolean	has(byte[] bytes)
static boolean	has(Charset charset, byte[] bytes)
static boolean	has(Charset charset, File file)
static boolean	has(Charset charset, InputStream input)
static boolean	has(Charset charset, String path)
static boolean	has(File file)
static boolean	has(InputStream input)
static boolean	has(String path)
int	length()
static ByteOrderMarks	of(byte[] bytes)
static ByteOrderMarks	of(Charset charset, byte[] bytes)
static ByteOrderMarks	of(Charset charset, File file)
static ByteOrderMarks	of(Charset charset, InputStream input)
static ByteOrderMarks	of(Charset charset, String path)
static ByteOrderMarks	of(File file)
static ByteOrderMarks	of(InputStream input)
static ByteOrderMarks	of(String path)
static ByteOrderMarks	remove(Charset charset, File file)
static ByteOrderMarks	remove(Charset charset, String path)
static ByteOrderMarks	remove(File file)
static ByteOrderMarks	remove(String path)
static ByteOrderMarks	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static ByteOrderMarks[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

UTF_8

public static final ByteOrderMarks UTF_8

UTF_16LE

public static final ByteOrderMarks UTF_16LE

UTF_16BE

public static final ByteOrderMarks UTF_16BE

UTF_32LE

public static final ByteOrderMarks UTF_32LE

UTF_32BE

public static final ByteOrderMarks UTF_32BE

方法详细资料

values

public static ByteOrderMarks[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (ByteOrderMarks c : ByteOrderMarks.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static ByteOrderMarks valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值

of

public static ByteOrderMarks of(String path)
                         throws IOException

抛出:

IOException

of

public static ByteOrderMarks of(File file)
                         throws IOException

抛出:

IOException

of

public static ByteOrderMarks of(InputStream input)
                         throws IOException

抛出:

IOException

of

public static ByteOrderMarks of(byte[] bytes)

of

public static ByteOrderMarks of(Charset charset,
                                String path)
                         throws IOException

抛出:

IOException

of

public static ByteOrderMarks of(Charset charset,
                                File file)
                         throws IOException

抛出:

IOException

of

public static ByteOrderMarks of(Charset charset,
                                InputStream input)
                         throws IOException

抛出:

IOException

of

public static ByteOrderMarks of(Charset charset,
                                byte[] bytes)

has

public static boolean has(String path)
                   throws IOException

抛出:

IOException

has

public static boolean has(File file)
                   throws IOException

抛出:

IOException

has

public static boolean has(InputStream input)
                   throws IOException

抛出:

IOException

has

public static boolean has(byte[] bytes)

has

public static boolean has(Charset charset,
                          String path)
                   throws IOException

抛出:

IOException

has

public static boolean has(Charset charset,
                          File file)
                   throws IOException

抛出:

IOException

has

public static boolean has(Charset charset,
                          InputStream input)
                   throws IOException

抛出:

IOException

has

public static boolean has(Charset charset,
                          byte[] bytes)

add

public static ByteOrderMarks add(String path)
                          throws IOException

抛出:

IOException

add

public static ByteOrderMarks add(File file)
                          throws IOException

抛出:

IOException

add

public static ByteOrderMarks add(Charset charset,
                                 String path)
                          throws IOException

抛出:

IOException

add

public static ByteOrderMarks add(Charset charset,
                                 File file)
                          throws IOException

抛出:

IOException

remove

public static ByteOrderMarks remove(String path)
                             throws IOException

抛出:

IOException

remove

public static ByteOrderMarks remove(File file)
                             throws IOException

抛出:

IOException

remove

public static ByteOrderMarks remove(Charset charset,
                                    String path)
                             throws IOException

抛出:

IOException

remove

public static ByteOrderMarks remove(Charset charset,
                                    File file)
                             throws IOException

抛出:

IOException

get

public static byte[] get(Charset charset)

charset

public Charset charset()

bytes

public byte[] bytes()

length

public int length()