javax.jmdns.impl.constants

枚举 DNSRecordClass

java.lang.Object

java.lang.Enum<DNSRecordClass>

javax.jmdns.impl.constants.DNSRecordClass

所有已实现的接口:

java.io.Serializable, java.lang.Comparable<DNSRecordClass>

public enum DNSRecordClass
extends java.lang.Enum<DNSRecordClass>

DNS Record Class

作者:

Arthur van Hoff, Jeff Sonstein, Werner Randelshofer, Pierre Frisch, Rick Blair

枚举常量概要

枚举常量

枚举常量和说明
CLASS_ANY Not a DNS class, but a DNS query class, meaning "all classes"
CLASS_CH CHAOS
CLASS_CS CSNET
CLASS_HS Hesiod
CLASS_IN static final Internet
CLASS_NONE Used in DNS UPDATE [RFC 2136]
CLASS_UNKNOWN

字段概要

字段

限定符和类型	字段和说明
static int	CLASS_MASK Multicast DNS uses the bottom 15 bits to identify the record class...
static int	CLASS_UNIQUE For answers the top bit indicates that all other cached records are now invalid.
static boolean	NOT_UNIQUE
static boolean	UNIQUE

方法概要

限定符和类型	方法和说明
static DNSRecordClass	classForIndex(int index)
static DNSRecordClass	classForName(java.lang.String name)
java.lang.String	externalName() Return the string representation of this type
int	indexValue() Return the numeric value of this type
boolean	isUnique(int index) Checks if the class is unique
java.lang.String	toString()
static DNSRecordClass	valueOf(java.lang.String name) 返回带有指定名称的该类型的枚举常量。
static DNSRecordClass[]	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, 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

CLASS_UNKNOWN

public static final DNSRecordClass CLASS_UNKNOWN

CLASS_IN

public static final DNSRecordClass CLASS_IN

static final Internet

CLASS_CS

public static final DNSRecordClass CLASS_CS

CSNET

CLASS_CH

public static final DNSRecordClass CLASS_CH

CHAOS

CLASS_HS

public static final DNSRecordClass CLASS_HS

Hesiod

CLASS_NONE

public static final DNSRecordClass CLASS_NONE

Used in DNS UPDATE [RFC 2136]

CLASS_ANY

public static final DNSRecordClass CLASS_ANY

Not a DNS class, but a DNS query class, meaning "all classes"

字段详细资料

CLASS_MASK

public static final int CLASS_MASK

Multicast DNS uses the bottom 15 bits to identify the record class...
Except for pseudo records like OPT.

另请参阅:

常量字段值

CLASS_UNIQUE

public static final int CLASS_UNIQUE

For answers the top bit indicates that all other cached records are now invalid.
For questions it indicates that we should send a unicast response.

另请参阅:

常量字段值

UNIQUE

public static final boolean UNIQUE

另请参阅:

常量字段值

NOT_UNIQUE

public static final boolean NOT_UNIQUE

另请参阅:

常量字段值

方法详细资料

values

public static DNSRecordClass[] 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 (DNSRecordClass c : DNSRecordClass.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 DNSRecordClass valueOf(java.lang.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:

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

java.lang.NullPointerException - 如果参数为空值

externalName

public java.lang.String externalName()

Return the string representation of this type

返回:

String

indexValue

public int indexValue()

Return the numeric value of this type

返回:

String

isUnique

public boolean isUnique(int index)

Checks if the class is unique

参数:

index -

返回:

true is the class is unique, false otherwise.

classForName

public static DNSRecordClass classForName(java.lang.String name)

参数:

name -

返回:

class for name

classForIndex

public static DNSRecordClass classForIndex(int index)

参数:

index -

返回:

class for name

toString

public java.lang.String toString()

覆盖:

toString 在类中 java.lang.Enum<DNSRecordClass>