If the key is already present, it replaces the old value with new value key - key for mapping It returns null if there is no mapping key - the key for which value mapping has to be retrieved Integer getOrDefault(Object key, Integer defaultvalue) Returns the value of the specified key if mapped, else returns the defaultvalue if there is no mapping key - the key for which we value has to be returnedĭefaultvalue - the default value to be returned when there is no mapping int hashCode() Returns the hashcode value of the map Boolean isEmpty() Returns true is the hashmap does not have any key-value pairs Set keySet() Returns the set view of the keys present in the map Integer put(String key, int value) Associates the key with value. Key and values themselves are not cloned Boolean containsKey(Object key) Returns true if there is a mapping value for the specified key key - the key for which we need to retrieve the value Boolean containsValue(Object value) Returns true if there is mapping of key for the specified value value - the value for which specified key is mapped Set entrySet() Returns a set view of the mapping of the map Boolean equals(Object o) Returns true if the object has the same mapping of the map o - the object to be compared Integer get(Object key) Returns the value of the specified key in the map. Constructor Description LinkedHashMap() Initializes a default LinkedHashMap LinkedHashMap(Map m) Initializes the LinkedHashmap with elements of Map m LinkedHashMap(int capacity) Initializes the Linkedhashmap with the specified capacity integer value LinkedHashMap(int capacity, float loadfactor) Initializes the Linkedhashmap with the specified capacity and load factor LinkedHashMap(int capacity, float loadFactor, boolean accessOrder) Initializes the LinkedhashMap with the specified capacity and load factor along with the access order mode Methods of LinkedHashMap in Java Method Description Parameter void clear() Removes all the mappings in this map which means map will be empty Object clone() Returns a shallow copy of this HashMap instance. Constructors in LinkedHashMapīelow are the constructors present in the LinkedHashMap class.
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