source code WeakHashMap

package myutil;

import java.util.WeakHashMap;

class Temp  {
      public void finalize() {
        System.out.println("finalize() Called");
        }
    public String toString() {
        return "Temp";
     }
    }
public class WeakHashMapEx1 {
    public static void main(String[] args) {
        WeakHashMap map=new     WeakHashMap();
        Temp t=new Temp();
        map.put(t,"orange");
        t=null;
        System.gc();
    System.out.println("The Map"+map);
      }
}

output:
finalize() Called
The Map{}