Answer Posted / rajesh

Comparable interface uses Object's compareTo() to compare
the objects. We have to override the compareTo() method in
order to sort.

Where as Comparator, checks for compare() method. You can
sort based on particular property of the object.

Variable of the boolean type is automatically initialized as?

974

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Can a class declared as private be accessed outside it’s package?

956

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What is a top level class in java?

969

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What is a predicate method?

965

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What is a java list?

1055

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How are variables stored?

932

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Explain about method local inner classes or local inner classes in java?

972

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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)

1765

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What are the advantages of passing this into a method instead of the current class object itself?

1626

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What is exception handling in java?

989

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What is a singleton factory?

918

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What is anonymous inner class?

1031

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What is palindrome in java?

940

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When a thread is executing synchronized methods , then is it possible to execute other synchronized methods simultaneously by other threads?

1016

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How to handle a web browser resize operation?

1013

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