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Hi Friends, Can u give few interview questions which relates
ArrayList and Hashmap. I mean how to link ArrayList and
HashMap.I know this is not good way of asking questions like
this , but i need
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Answer / murali,25@gmail.com
HashMap stores key-value pairs. Alternate approach is to have a plain java class with key,value as attributes.
class HashMapAlternate{
Object key;
Object value;
}
You can create objects of HashMapAlternate and store it in arraylist. But HashMap is a better solution because it uses hashing and collision resolution technique which speeds up lookup when number of objects are very large.
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