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diff betwen Hasp Map and Hash Table

jacob deiter
Ranch Hand

Joined: Apr 02, 2008
Posts: 580
What is the difference between hash Map and Hash Table.Why we use Map in our application.Why can't we use array list in entire application.
Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 43350
    
  32
HashMap and Hashtable: please note the spellling.

Look in the API documentation for HashMap and Hashtable. The first line under HashMap tells the main differences, about synchronisation and about nulls.

A Map is completely different from an ArrayList. Go through the Collections part of the Java Tutorial and see the difference between a Map and a List.
 
It is sorta covered in the JavaRanch Style Guide.
 
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