com.vaadin.server.KeyMapper API 7.7.46 | Vaadin

com.vaadin.server.

java.lang.Object
- com.vaadin.server.KeyMapper<V>

All Implemented Interfaces:

Serializable
```
public class KeyMapper<V>
extends Object
implements Serializable
```
KeyMapper is the simple two-way map for generating textual keys for objects and retrieving the objects later with the key.

Since:

3.0

Author:

Vaadin Ltd.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

KeyMapper()

Method Summary

All Methods
Modifier and Type	Method	Description
`boolean`	`containsKey(String key)`	Checks if the given key is mapped to an object.
`V`	`get(String key)`	Retrieves object with the key.
`String`	`key(V o)`	Gets key for an object.
`void`	`remove(V removeobj)`	Removes object from the mapper.
`void`	`removeAll()`	Removes all objects from the mapper.

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

- Constructor Detail
  - KeyMapper
```
public KeyMapper()
```
- Method Detail
  - key
```
public String key(V o)
```
    Gets key for an object.
    
    Parameters:
    
    o - the object.
  - get
```
public V get(String key)
```
    Retrieves object with the key.
    
    Parameters:
    
    key - the name with the desired value.
    
    Returns:
    
    the object with the key.
  - remove
```
public void remove(V removeobj)
```
    Removes object from the mapper.
    
    Parameters:
    
    removeobj - the object to be removed.
  - removeAll
```
public void removeAll()
```
    Removes all objects from the mapper.
  - containsKey
```
public boolean containsKey(String key)
```
    Checks if the given key is mapped to an object.
    
    Parameters:
    
    key - the key to check
    
    Returns:
    
    true if the key is currently mapped, false otherwise
    
    Since:
    
    7.7