org.spf4j.base

Class Pair<A,B>

java.lang.Object

org.spf4j.base.Pair<A,B>

All Implemented Interfaces:

Map.Entry<A,B>, Writeable

Direct Known Subclasses:

NameValue, SerializablePair

public class Pair<A,B>
extends Object
implements Map.Entry<A,B>, Writeable

Author:

zoly

Field Summary

Fields

Modifier and Type	Field and Description
protected A	first
protected B	second

Constructor Summary

Constructors

Constructor and Description
Pair(A first, B second)

Method Summary

Modifier and Type	Method and Description
static <K,V> Map<K,V>	asMap(Pair<K,? extends V>... pairs)
boolean	equals(Object obj)
static Pair<String,String>	from(String stringPair) Creates a pair from a str1,str2 pair.
A	getFirst()
A	getKey()
B	getSecond()
B	getValue()
int	hashCode()
static <A,B> Pair<A,B>	of(A first, B second)
B	setValue(B value)
List<Object>	toList()
String	toString()
void	writeTo(Appendable appendable)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map.Entry

comparingByKey, comparingByKey, comparingByValue, comparingByValue

Methods inherited from interface org.spf4j.base.Writeable

writeTo

Field Detail

first

@Nullable
protected final A first

second

@Nullable
protected final B second

Constructor Detail

Pair

@ConstructorProperties(value={"first","second"})
public Pair(@Nullable
                                                             A first,
                                                             @Nullable
                                                             B second)

Method Detail

of

public static <A,B> Pair<A,B> of(@Nullable
                                 A first,
                                 @Nullable
                                 B second)

from

@Nullable
public static Pair<String,String> from(@Nonnull
                                                 String stringPair)

Creates a pair from a str1,str2 pair.

Parameters:

stringPair - - pair in the format (a,b) csv pair.

Returns:

null if this is not a pair.

getFirst

public final A getFirst()

getSecond

public final B getSecond()

equals

public final boolean equals(Object obj)

Specified by:

equals in interface Map.Entry<A,B>

Overrides:

equals in class Object

hashCode

public final int hashCode()

Specified by:

hashCode in interface Map.Entry<A,B>

Overrides:

hashCode in class Object

toString

public final String toString()

Overrides:

toString in class Object

writeTo

public final void writeTo(Appendable appendable)
                   throws IOException

Specified by:

writeTo in interface Writeable

Throws:

IOException

toList

public final List<Object> toList()

asMap

public static <K,V> Map<K,V> asMap(Pair<K,? extends V>... pairs)

getKey

public final A getKey()

Specified by:

getKey in interface Map.Entry<A,B>

getValue

public final B getValue()

Specified by:

getValue in interface Map.Entry<A,B>

setValue

public final B setValue(B value)

Specified by:

setValue in interface Map.Entry<A,B>