- Hashtable and linked list implementation of the Set interface, with predictable iteration order.
- LinkedHashSet maintains the Insertion order of elements using LinkedList
- LinkedHashSet is UnSynchronized and not thread safe.
- Iterator of LinkedHashSet is fail-fast.
- Iterator will throw ConcurrentModificationException, if LinkedHashSet modified at any time after the iterator is created, in any way except through the iterator’s own remove method.
- LinkedHashSet offers constant time performance for the basic operations like add, remove, contains and size.
1. LinkedHashSet class hierarchy:
2. Program – Example of LinkedHashSet collection in java (example)
package org.learn.collection.set.lhset;import java.util.LinkedHashSet;import java.util.Set;public class DemoLinkedHashSet { public static void main(String[] args) { Set<String> computerGenerations = new LinkedHashSet<>(); computerGenerations.add("VacuumTubes"); computerGenerations.add("Transistors"); computerGenerations.add("IntegratedCircuits"); computerGenerations.add("Microprocessors"); computerGenerations.add("ArtificialIntelligence"); System.out.println("The Five Generations of Computers: \n"+ computerGenerations); } } |
3. Output – Example of LinkedHashSet collection in java (example)
The Five Generations of Computers: [VacuumTubes, Transistors, IntegratedCircuits, Microprocessors, ArtificialIntelligence] |