Java org.apache.commons.collections4 MapUtils fields, constructors, methods, implement or subclass

Example usage for Java org.apache.commons.collections4 MapUtils fields, constructors, methods, implement or subclass

Introduction

In this page you can find the methods, fields and constructors for org.apache.commons.collections4 MapUtils.

The text is from its open source code.

Field

SortedMap	EMPTY_SORTED_MAP An empty unmodifiable sorted map.

Method

Map	emptyIfNull(final Map map) Returns an immutable empty map if the argument is `null`, or the argument itself otherwise.
Boolean	getBoolean(final Map map, final K key) Gets a Boolean from a Map in a null-safe manner.
Double	getDouble(final Map map, final K key) Gets a Double from a Map in a null-safe manner.
Integer	getInteger(final Map map, final K key, final Integer defaultValue) Looks up the given key in the given map, converting the result into an integer, using the default value if the the conversion fails.
int	getIntValue(final Map map, final K key, final int defaultValue) Gets an int from a Map in a null-safe manner, using the default value if the the conversion fails.
V	getObject(final Map map, final K key) Gets from a Map in a null-safe manner.
String	getString(final Map map, final K key) Gets a String from a Map in a null-safe manner.
Map	invertMap(final Map map) Inverts the supplied map returning a new HashMap such that the keys of the input are swapped with the values.
boolean	isEmpty(final Map map) Null-safe check if the specified map is empty.
boolean	isNotEmpty(final Map map) Null-safe check if the specified map is not empty.
Properties	toProperties(final Map map) Gets a new Properties object initialised with the values from a Map.
Map	unmodifiableMap(final Map map) Returns an unmodifiable map backed by the given map.