Sets And Maps Java

Here we are going to look how to use arrays, lists, set and maps in java. On the otherside , we say that when we put value in map it ca. Java maps and sets [bono] 16 java mapinterface •creation is same as set, but twotype parameters for generic class.

Sets and maps java software structures: Set and all of the classes which implements set interface should have unique elements. Once stored in a map, you can later look up the value using just the key.

Let map = new map ();

Set allows single null value at most. You can store all types of data in javascript maps. Specifically in java, a collection refers to any group of objects stored in a single structure belonging to some class stored in java.util. 1.duplicate objects the main difference between the list and set interface in java is that list allows duplicates while set doesn't allow duplicates.