it.okkam.awesome.utils

Class MapUtils

java.lang.Object

it.okkam.awesome.utils.MapUtils

public class MapUtils
extends Object

Author:

simone

Method Summary

Modifier and Type	Method and Description
static <T> List<T>	keySetToList(Map<T,?> map) Return the list composed by the key set of the map
static <T> Map<T,T>	putIfNotExists(Map<T,T> map, T key, T value) Put an element into the map if it the key does not exists
static <T> List<T>	valuesToList(Map<?,T> map) Return the list composed by the values of the map

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

keySetToList

public static <T> List<T> keySetToList(Map<T,?> map)

Return the list composed by the key set of the map

Type Parameters:

T - The map key type

Parameters:

map - The input map

Returns:

The List composed by the key set of the map

valuesToList

public static <T> List<T> valuesToList(Map<?,T> map)

Return the list composed by the values of the map

Type Parameters:

T - The map value type

Parameters:

map - The input map

Returns:

The List composed by the value set of the map

putIfNotExists

public static <T> Map<T,T> putIfNotExists(Map<T,T> map,
                                          T key,
                                          T value)

Put an element into the map if it the key does not exists

Type Parameters:

T - The map key and value type

Parameters:

map - The map

key - The key

value - The value

Returns:

The input map