Click here to watch in Youtube : https://www.youtube.com/watch?v=jVXSPbbc3GE&list=UUhwKlOVR041tngjerWxVccwLinkedHashMapExample.java import java.util.LinkedHashMap;
/*
* Example of put(K key,V value) method.
*/
public class LinkedHashMapExample
{
public static void main( String[] args )
{
LinkedHashMap<Integer, String> linkedHashMap = new LinkedHashMap<Integer, String>();
/*
* Associates the specified value with the specified key in this map. If
* the map previously contained a mapping for the key, the old value is
* replaced.
*
* Returns: the previous value associated with key, or null if there was
* no mapping for key. (A null return can also indicate that the map
* previously associated null with key.)
*/
String value = linkedHashMap.put(1, "Apple");
System.out.println("Previous value associated with key '1' : " + value);
System.out.println("linkedHashMap : " + linkedHashMap + "\n");
value = linkedHashMap.put(1, "Ball");
System.out.println("Previous value associated with key '1' : " + value);
System.out.println("linkedHashMap : " + linkedHashMap);
}
}