• • A LinkedHashMap contains values based on the key. It implements the Map interface and extends HashMap class.
• • It contains only unique elements.
• • It contains only unique elements.
• • Insertion order is preserved.

LinkedHashMapDemo.java

import java.util.*;
class LinkedHashMapDemo
{
	public static void main(String[] args)
	{
		LinkedHashMaphm=newLinkedHashMap();
		hm.put(100,"Tapuuu");
		hm.put(101,"Silan");
		hm.put(102,"Akshay");
		for(Map.Entry m:hm.entrySet())
		{
			System.out.println(m.getKey()+" "+m.getValue());
		}
	}
}

Output

100 Tapuuu
101 Silan
102 Akshay