org.apache.hadoop.io

类 ByteWritable

java.lang.Object

org.apache.hadoop.io.ByteWritable

所有已实现的接口:

Comparable, Writable, WritableComparable

public class ByteWritable
extends Object
implements WritableComparable

A WritableComparable for a single byte.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	ByteWritable.Comparator A Comparator optimized for ByteWritable.

构造器概要

构造器

构造器和说明
ByteWritable()
ByteWritable(byte value)

方法概要

方法

限定符和类型	方法和说明
int	compareTo(Object o) Compares two ByteWritables.
boolean	equals(Object o) Returns true iff o is a ByteWritable with the same value.
byte	get() Return the value of this ByteWritable.
int	hashCode()
void	readFields(DataInput in) Deserialize the fields of this object from in.
void	set(byte value) Set the value of this ByteWritable.
String	toString()
void	write(DataOutput out) Serialize the fields of this object to out.

从类继承的方法 java.lang.Object

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

构造器详细资料

ByteWritable

public ByteWritable()

ByteWritable

public ByteWritable(byte value)

方法详细资料

set

public void set(byte value)

Set the value of this ByteWritable.

get

public byte get()

Return the value of this ByteWritable.

readFields

public void readFields(DataInput in)
                throws IOException

从接口复制的说明: Writable

Deserialize the fields of this object from in.

For efficiency, implementations should attempt to re-use storage in the existing object where possible.

指定者:

readFields 在接口中 Writable

参数:

in - DataInput to deseriablize this object from.

抛出:

IOException

write

public void write(DataOutput out)
           throws IOException

从接口复制的说明: Writable

Serialize the fields of this object to out.

指定者:

write 在接口中 Writable

参数:

out - DataOuput to serialize this object into.

抛出:

IOException

equals

public boolean equals(Object o)

Returns true iff o is a ByteWritable with the same value.

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

compareTo

public int compareTo(Object o)

Compares two ByteWritables.

指定者:

compareTo 在接口中 Comparable

toString

public String toString()

覆盖:

toString 在类中 Object