What are uses of Hash Code?

2 Answers   Cognizant,

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List methods available in Java Queue interface

1 Answers  

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Can i have abstract class with no abstract methods?

22 Answers   CTS,

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What is the significance of continue jump statement? Explain with an example.

0 Answers   Amdocs,

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Say you want to store the information about a number of pets in an array. Typical information that you could store for each pet (where relevant) would be • Breed of animal • Animal's name • Its birth date • Its sex • Whether it has been sterilised or not • When it is due for its next inoculation • When it last had its wings clipped For each type of pet (eg. dog, cat or bird) you would typically define a class to hold the relevant data. Note: You do not need to implement these classes. Just answer the following questions. 3.1.1 What would be the advantage of creating a superclass (eg. Pet) and declaring an array of Pet objects over simply using an array of Objects, storing each of the instances of the different pet classes (eg. Dog, Cat or Bird) in it? 3.1.2 Would you define Pet as a class or as an interface? Why? (2) (2)

0 Answers  

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what is tempplate pattern

4 Answers   IBM, RBS,

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What is a arraylist in java?

0 Answers  

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What is the difference between arraylist and hashset in java?

0 Answers  

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Is null function in java?

0 Answers  

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What causes memory leak in java?

0 Answers  

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Explain about global variables in Java?

3 Answers  

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Does 'true' and 'false' are keywords?

5 Answers  

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