EmptyMapIterator

org.apache.commons.collections4.iterators

Class EmptyMapIterator<K,V>

java.lang.Object
- org.apache.commons.collections4.iterators.AbstractEmptyMapIterator<K,V>
- - org.apache.commons.collections4.iterators.EmptyMapIterator<K,V>

All Implemented Interfaces:

Iterator<K>, MapIterator<K,V>, ResettableIterator<K>
```
public class EmptyMapIterator<K,V>
extends AbstractEmptyMapIterator<K,V>
implements MapIterator<K,V>, ResettableIterator<K>
```
Provides an implementation of an empty map iterator.

Since:

3.1

Field Summary

Fields

Modifier and Type	Field and Description
`static MapIterator`	`INSTANCE` Singleton instance of the iterator.

Constructor Summary

Constructors

Modifier	Constructor and Description
`protected`	`EmptyMapIterator()` Constructor.

Method Summary

All Methods

Static Methods

Instance Methods

Concrete Methods
Modifier and Type	Method and Description
`void`	`add(E obj)`
`static <K,V> MapIterator<K,V>`	`emptyMapIterator()` Get a typed instance of the iterator.
`boolean`	`hasNext()`
`boolean`	`hasPrevious()`
`E`	`next()`
`int`	`nextIndex()`
`E`	`previous()`
`int`	`previousIndex()`
`void`	`remove()`
`void`	`reset()`
`void`	`set(E obj)`

Methods inherited from class org.apache.commons.collections4.iterators.AbstractEmptyMapIterator
getKey, getValue, setValue

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

Methods inherited from interface org.apache.commons.collections4.MapIterator
getKey, getValue, hasNext, next, remove, setValue

Methods inherited from interface org.apache.commons.collections4.ResettableIterator
reset

Methods inherited from interface java.util.Iterator
forEachRemaining

Field Detail
- INSTANCE
```
public static final MapIterator INSTANCE
```
  Singleton instance of the iterator.
  
  Since:
  
  3.1

Constructor Detail
- EmptyMapIterator
```
protected EmptyMapIterator()
```
  Constructor.

Method Detail

emptyMapIterator
```
public static <K,V> MapIterator<K,V> emptyMapIterator()
```
Get a typed instance of the iterator.

Type Parameters:

K - the key type

V - the value type

Returns:

MapIterator

hasNext
```
public boolean hasNext()
```

next
```
public E next()
```

hasPrevious
```
public boolean hasPrevious()
```

previous
```
public E previous()
```

nextIndex
```
public int nextIndex()
```

previousIndex
```
public int previousIndex()
```

add
```
public void add(E obj)
```

set
```
public void set(E obj)
```

remove
```
public void remove()
```

reset
```
public void reset()
```