Set Interface Hierarchy In Java

In this section, we will discuss some of the important points about Java Set Java Set interface is a member of the Java Collections Framework. Unlike List, Set DOES NOT allow you to add duplicate elements. The set allows you to add at most one null element only. The set interface has one default method in Java 8 spliterator.

A collection that contains no duplicate elements. More formally, sets contain no pair of elements e1 and e2 such that e1.equalse2, and at most one null element.As implied by its name, this interface models the mathematical set abstraction.. The Set interface places additional stipulations, beyond those inherited from the Collection interface, on the contracts of all constructors and on the

Take NavigableSet for instance, which has 4 layers of interfaces above it SortedSet, Set, Collection, Iterable. In this example, the diamond inheritance is a bit peculiar, but if necessary not a bad choice per se. But usually a tree hierarchy is much clearer and better. In this case I would consider making either

The set interface is used to create the mathematical set. Java Set Interface Hierarchy. In the above diagram, the Set interface extends the java.util.Collection interface. The Set interface is implemented by the HashSet, LinkedHashSet, and TreeSet classes. There are two interfaces that extend the Set implementation, namely SortedSet and

The hierarchy of the entire collection framework consists of four core interfaces such as Collection, List, Set, Map, and two specialized interfaces named SortedSet and SortedMap for sorting. All the interfaces and classes for the collection framework are located in java.util package .

The Set Interface is present in java.util package and extends the Collection interface. It is an unordered collection of objects in which duplicate values cannot be stored. It is an interface that implements the mathematical set. Hierarchy of Java Set interface. The image below demonstrates the hierarchy of Java Set interface.

The diagram below is a representation of the Set hierarchy and covers the interfaces and classes we will study in this lesson. The diagram has several interfaces missing and also the java.util.EnumSetltEgt concrete implemetation which is not covered on the site, but should help in visualisation Set Interfaces amp Classes Top

Here are some key points about the Set interface in Java Unique Elements The Set is a Collection that cannot contain duplicate elements. It models the mathematical set abstraction. Set Interface Hierarchy Diagram. Set Interface APIsMethods. Below are the important Set interface methods with descriptions

Collection - java.util.List, java.util.Set and java.util.Map all properties in tabular form

So, in Set interface duplicates are not allowed this is the main thing which we have to remember. When it comes to the question of what the methods are present in Set interface then its answer is there are no new methods in Set Interface. All the collection method is present in the Set interface. So the above diagram is the Set interface