Objects in Hashtable

Question

Hi,
I have a very basic question?
If one were to store an object in a Hashtable and then make that Hashtable nullable will it also implicitly make the object within it nullable?
Or do we have to explicitly make the object nullable first and then make hashtable nullable
Thanks
Ash

Answer 1

Hi Ash,
Indeed a very basic question, but can really test ur fundamentals. Well if u make that hashtableas nuul after putting the objects in it the, objectes will still be alive. The reason is that the hashtable only stores the refernces of those obj instances. So on the hastable getting killed, doesnt really kill the individual object refernces. It can only kill it's own memger object, once the destrucvtor is called.
U can tyr the following code.
public static void main(String[] args) {
          String a = "Mohit";
          java.lang.Integer i= new java.lang.Integer(1);
          java.util.Hashtable h= new java.util.Hashtable();
          h.put("String",a);
          h.put("Integer",i);
          h=null;
          System.out.println(a+","+i);