NullWritable (deeplearning4j 1.0.0-beta7 API)

java.lang.Object
- org.datavec.api.writable.NullWritable

All Implemented Interfaces:

Serializable, Comparable, WritableComparable, Writable
```
public class NullWritable
extends Object
implements WritableComparable
```
NullWritable. Typically only used in very limited circumstances, to signify that a value is missing. Attempts to convert the NullWritable to some other value (using toInt(), toDouble() etc) will result in an UnsupportedOperationException being thrown

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field and Description

static NullWritable INSTANCE

Fields
Modifier and Type	Field and Description
`static NullWritable`	`INSTANCE`

Constructor Summary

Constructors
Constructor and Description

NullWritable()

Constructors
Constructor and Description
`NullWritable()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`compareTo(Object o)`
`boolean`	`equals(Object o)`
`WritableType`	`getType()` Get the type of the writable.
`void`	`readFields(DataInput in)` Deserialize the fields of this object from `in`.
`double`	`toDouble()` Convert Writable to double.
`float`	`toFloat()` Convert Writable to float.
`int`	`toInt()` Convert Writable to int.
`long`	`toLong()` Convert Writable to long.
`String`	`toString()`
`void`	`write(DataOutput out)` Serialize the fields of this object to `out`.
`void`	`writeType(DataOutput out)` Write the type (a single short value) to the DataOutput.

Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - INSTANCE
```
public static final NullWritable INSTANCE
```
- Constructor Detail
  - NullWritable
```
public NullWritable()
```
- Method Detail
  - compareTo
```
public int compareTo(Object o)
```
    Specified by:
    
    compareTo in interface Comparable
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - write
```
public void write(DataOutput out)
           throws IOException
```
    Description copied from interface: Writable
    
    Serialize the fields of this object to out.
    
    Specified by:
    
    write in interface Writable
    
    Parameters:
    
    out - DataOuput to serialize this object into.
    
    Throws:
    
    IOException
  - readFields
```
public void readFields(DataInput in)
                throws IOException
```
    Description copied from interface: Writable
    
    Deserialize the fields of this object from in.
    For efficiency, implementations should attempt to re-use storage in the existing object where possible.
    
    Specified by:
    
    readFields in interface Writable
    
    Parameters:
    
    in - DataInput to deseriablize this object from.
    
    Throws:
    
    IOException
  - writeType
```
public void writeType(DataOutput out)
               throws IOException
```
    Description copied from interface: Writable
    
    Write the type (a single short value) to the DataOutput. See WritableFactory for details.
    
    Specified by:
    
    writeType in interface Writable
    
    Parameters:
    
    out - DataOutput to write to
    
    Throws:
    
    IOException - For errors during writing
  - toDouble
```
public double toDouble()
```
    Description copied from interface: Writable
    
    Convert Writable to double. Whether this is supported depends on the specific writable.
    
    Specified by:
    
    toDouble in interface Writable
  - toFloat
```
public float toFloat()
```
    Description copied from interface: Writable
    
    Convert Writable to float. Whether this is supported depends on the specific writable.
    
    Specified by:
    
    toFloat in interface Writable
  - toInt
```
public int toInt()
```
    Description copied from interface: Writable
    
    Convert Writable to int. Whether this is supported depends on the specific writable.
    
    Specified by:
    
    toInt in interface Writable
  - toLong
```
public long toLong()
```
    Description copied from interface: Writable
    
    Convert Writable to long. Whether this is supported depends on the specific writable.
    
    Specified by:
    
    toLong in interface Writable
  - getType
```
public WritableType getType()
```
    Description copied from interface: Writable
    
    Get the type of the writable.
    
    Specified by:
    
    getType in interface Writable
    
    Returns:
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class NullWritable

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

INSTANCE

Constructor Detail

NullWritable

Method Detail

compareTo

equals

write

readFields

writeType

toDouble

toFloat

toInt

toLong

getType

toString