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|Java - Interview Questions and Answers|
|Ans. With Java 7 or Later. If you don't declare the list to be of specific type , it treats it as list of objects. int 1 is auto boxed to Integer and "1" is String and hence both are objects.|
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|Like Discuss Correct / Improve  arraylist  list  collections|
|If you are given a choice to use either ArrayList and LinkedList, Which one would you use and Why ?|
|What is the difference between ArrayList and LinkedList ?|
| Collections.sort can only be performed on ..|
d. Any Collection implementation
| Is this a valid initialization ? Explain.|
Collection<Collection> collection = new LinkedList<LinkedList>();
|In a Linked list with sorted numbers, insert a new numbers while maintaining the sort order.|
| What is the difference between List, Set and Map ?|
What are the different Java Collections Interfaces ?
|Difference between Vector and ArrayList ?|
|Overridden methods must have the same ...|
|Which of the following doesn't extend Collection interface ?|
|Will this code give error if i try to add two heterogeneous elements in the arraylist. ? and Why ?|