Java New Map Entry

Object clone, finalize, getclass, notify, notifyall, wait, wait, wait The java.util.treemap.entryset() method in java is used to create a set out of the same elements contained in the treemap. Map.entry in java is an interface in java that enables us to access the entries within a map.

Now finally use the copy constructor (it is a special constructor used for creating a new object as a copy of an existing object) to clone the initial map. In this tutorial, we will discuss the map.entry interface in java with examples using its various methods. It returns a collection view of the map, whose elements are of this class.

As it is immutable, calling setvalue will throw an unsupportedoperationexception.

Entry interface with two simple implementations to create an entry. Starting from java 9, there is a new utility method allowing to create an immutable entry which is map#entry (object, object). You may check out the related api usage on the sidebar. Put the elements into the map using the put () method.