public class DoubleWritable extends Object implements WritableComparable
限定符和类型 | 类和说明 |
---|---|
static class |
DoubleWritable.Comparator
A Comparator optimized for DoubleWritable.
|
构造器和说明 |
---|
DoubleWritable() |
DoubleWritable(double value) |
限定符和类型 | 方法和说明 |
---|---|
int |
compareTo(Object o) |
boolean |
equals(Object o)
Returns true iff
o is a DoubleWritable with the same value. |
double |
get() |
int |
hashCode() |
void |
readFields(DataInput in)
Deserialize the fields of this object from
in . |
void |
set(double value) |
String |
toString() |
void |
write(DataOutput out)
Serialize the fields of this object to
out . |
public void readFields(DataInput in) throws IOException
Writable
in
.
For efficiency, implementations should attempt to re-use storage in the existing object where possible.
readFields
在接口中 Writable
in
- DataInput
to deseriablize this object from.IOException
public void write(DataOutput out) throws IOException
Writable
out
.write
在接口中 Writable
out
- DataOuput
to serialize this object into.IOException
public void set(double value)
public double get()
public boolean equals(Object o)
o
is a DoubleWritable with the same value.public int compareTo(Object o)
compareTo
在接口中 Comparable
Copyright © 2009 The Apache Software Foundation