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|Interview Questions and Answers|
|Ans. Collections in java is a framework of classes that provides an abstracted data structure to store and manipulate the group of objects. Each class is unique in the way it stores , search , sort and modify the elements.|
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|Does garbage collection guarantee that a program will not run out of memory?|
|Why Char array is preferred over String for storing password?|
|What is the difference between ArrayList and LinkedList ?|
|If you are given a choice to use either ArrayList and LinkedList, Which one would you use and Why ?|
|Describe, in general, how java's garbage collector works ?|
|Difference between HashMap and Hashtable?|
|Difference between TreeMap and HashMap ?|
|Can you provide some implementation of a Dictionary having large number of words ?|
|Will this code give error if i try to add two heterogeneous elements in the arraylist. ? and Why ?|
|Let's suppose we have an to destroy objects, Design a program to implement garbage collection ?|