Java HashMap Class

Is is pronounced as HashMap because It is hash table based implementation of map interface. It extends AbstractMap class and implements Map interface. It allows to store null key and null values. It is non synchronized implementation so if multiple threads accessing it concurrently and any one of them modifies it then it must be … Read more

Java Map Interface

Java Map interface represents the mapping between unique keys to values. Map can not hold duplicate values. In Map interface, Each key can map at most one value. Each Map interface provides three different collection views. Using which you can view map’s content as a set of keys, collection of values and set of key-value … Read more