Iterating over and deleting from Hashtable in Java

Question

I have a Hashtable in Java and want to iterate over all the values in the table and delete a particular key-value pair while iterating.

How may this be done?

Answer 1

You can use Enumeration:

Hashtable table = ...

Enumeration enumKey = table.keys();
while(enumKey.hasMoreElements()) {
    Integer key = enumKey.nextElement();
    String val = table.get(key);
    if(key==0 && val.equals("0"))
        table.remove(key);
}