Is HashMap faster than LinkedHashMap?

In terms of Performance there is not much difference between HashMap and LinkedHashMap but yes LinkedHashMap has more memory foot print than HashMap to maintain doubly LinkedList which it uses to keep track of insertion order of keys.Click to see full answer. Subsequently, one may also ask, which is faster HashMap or LinkedHashMap?While both HashMap and HashMap classes are almost similar in performance, HashMap requires less memory than a LinkedHashMap because it does not guarantee the iterating order of the map, which makes adding, removing, and finding entries in a HashMap relatively faster than doing the same with a LinkedHashMap.Additionally, which map is faster in Java? HashMap will generally be fastest, since it has the best cache behavior ( HashMap iterates directly over the backing array, whereas TreeMap and LinkedHashMap iterate over linked data structures). Also know, why is HashMap faster than TreeMap? It provides a performance of O(1) , while TreeMap provides a performance of O(log(n)) to add, search, and remove items. Hence, HashMap is usually faster. A TreeMap uses memory way more effective so it is a good Map implementation for you if you are not sure of elements quantity that have to be stored in memory.Which is better HashMap or Hashtable?Hashtable is synchronized, whereas HashMap is not. This makes HashMap better for non-threaded applications, as unsynchronized Objects typically perform better than synchronized ones. Hashtable does not allow null keys or values. HashMap allows one null key and any number of null values.