WeakHashMap V put(K key,V value) method Example Program

Associates the specified value with the specified key in this map. If the map previously contained a mapping for this key, the old value is replaced.

Program

package com.candidjava;

import java.util.Map;
import java.util.WeakHashMap;

/* 
 * @author : Mohan 
 * @description : The put() method associates the specified value with the specified key in this map
 */
public class WeakHashMapPut {
	public static void main(String[] args) {
		Map<String, String> weakHashMap = new WeakHashMap<String, String>();

		System.out.println("Putting values into the Map");
		weakHashMap.put("1", "anandh");
		weakHashMap.put("2", "hari");
		weakHashMap.put("3", "vinoth");
		weakHashMap.put("4", "kamal");
		weakHashMap.put("5", "karthic");
		weakHashMap.put("6", "mohan");
		System.out.println("Map: " + weakHashMap);
		String str = (String) weakHashMap.put("2", "aalavanthan");
		System.out.println("Returned value: " + str);
		System.out.println("New Map: " + weakHashMap);
	}
}

Output

Explanation

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