Java.util.LinkedHashSet Class

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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

Sr.No. 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
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