Answer Posted / nageswara rao mothukuri

A window is a imaginary rectangle area on the moniter.
A frame is also a window with title bars and borders.

Now u r reading this answer is on a frame.This not the
window,but bydefault all are calling this as a window.

Does treeset allow null in java?

500

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What is included in core java?

571

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What is an interface in java? Explain

565

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What are the principle concepts of oops?

527

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Give an example of call be reference significance.

599

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Is a method a procedure?

541

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Which class should you use to obtain design information about an object in java programming?

636

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What is the primitive type short?

568

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What does the string method compareto () do?

530

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What is difference between static and abstract class?

508

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what are three ways in which a thread can enter the waiting state? Or what are different ways in which a thread can enter the waiting state? : Java thread

512

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Why to use nested classes in java? (Or) what is the purpose of nested class in java?

511

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What is variable and its types?

534

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What happens if we override only equals?

572

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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)

1336

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