What is widening and narrowing in java? Discuss with an example.

0 Answers   Amdocs,

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What are the methods of object class ?

0 Answers  

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worst case complexities of Quick sort and Merge sort.

0 Answers   Amazon,

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Which is better singleton or static class?

0 Answers  

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Why is multithreading important?

0 Answers  

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What is exception and error? and what is the difference between them?

2 Answers  

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how and when compiler knows that the Java code throws the checked Exception.

2 Answers   HSBC,

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What is the middleware?

2 Answers  

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Question 6 [9] 6.1 In what situations (in general) would you use a TreeMap? (3) 6.2 In what situations (in general) would you use a HashSet to store a collection of values?

1 Answers  

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How does access modifiers work?

1 Answers   Wipro,

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Can we clone singleton object?

0 Answers  

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what is the use of finalize()Method please explain with an example

3 Answers  

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