HashTable and Hash Map are not Showing duplicate values

i think hashtable can allow multiple values with same key. But how can i look at all the values with the same key. I have just far reached uptill here
in both the cases of the while loop it shows only the values 1, 2 , and 4. If it allows multiple values with the same key then it must show 3 and 4 for the same key which is 3. But it is not showing here. or i don't know how to print the values.
Hashtable<String,String> m = new Hashtable<String,String>();

m.put("1","1");
m.put("2","2");
m.put("3","3");
m.put("3","4");

Set set = m.keySet(); // get set-view of keys
Set set1 = m.entrySet(); //get set of all values in hash table

// get iterator
Iterator itr = set.iterator();
Iterator itr1 = set1.iterator();

String str;
double bal;

while(itr.hasNext())
{

str = (String) itr.next();
System.out.println(str + ": " +m.get(str));
}
while(itr1.hasNext())
{

Map.Entry e = (Map.Entry) itr1.next();
System.out.println(e.getValue());
}

but in both cases the output is
1 : 1
2 : 2
3 : 4

Quote:

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Originally Posted by omerkhalid34

i think hashtable can allow multiple values with same key

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Please see your private messages for an important note.

As for your original question, you'll want to re-read the API as your assumptions are incorrect. The only way around this that I know is to have the HashTable's (or better the HashMap's) value be an ArrayList or other collection.