Java.util.LinkedHashSet Class

Introduction

The java.util.LinkedHashSet class is a Hash table and Linked list implementation of the Set interface, with predictable iteration order.Following are the important points about LinkedHashSet:

• This class provides all of the optional Set operations, and permits null elements.

Class declaration

Following is the declaration for java.util.LinkedHashSet class:

public class LinkedHashSet<E>
   extends HashSet<E>
   implements Set<E>, Cloneable, Serializable

Parameters

Following is the parameter for java.util.LinkedHashSet class:

• E -- This is the type of elements maintained by this set.

Class constructors

S.N.	Constructor & Description
1	LinkedHashSet() This constructs a new, empty linked hash set with the default initial capacity (16) and load factor (0.75).
2	LinkedHashSet(Collection<? extends E> c) This constructs a new linked hash set with the same elements as the specified collection.
3	LinkedHashSet(int initialCapacity) This constructs a new, empty linked hash set with the specified initial capacity and the default load factor (0.75).
4	LinkedHashSet(int initialCapacity, float loadFactor) This constructs a new, empty linked hash set with the specified initial capacity and load factor.

Class methods

This class inherits methods from the following classes:

• java.util.HashSet
• java.util.AbstractSet
• java.util.AbstractCollection
• java.util.Object
• java.util.Set