Neeh help in task please

Hi all,
I need to define an abstract base type called Quadrilateral. Derived types Rectangle, Square and Parallelogram are based on this type. i need to write definitions of the public abstract class Quadrilateral along with the classes for the derived types according to fallowing table:


Quadrilateral : Area = Abstract , toString()=name

Rectangle: Area = length*width ,toString()=name, perimeter
Square: Area = length * length, toString()=name, perimeter
Parallelogram: Area =length * width ,toString()=name, perimeter

Assume that the derived class name is used as the name and that the length and width are double values.
Write a test harness that defines a object of each of these types, and prints out the name and area of a sample of each of the types.

Thanks

Do you have a question about how to complete your assignment?

It's nice that people think we're interested in their homework...

Given those hints and instructions the code almost writes itself.

kind regards,

Jos

Almost is as good as a mile...

db <--- almost ready to write the code

Quote:

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Originally Posted by DarrylBurke

Almost is as good as a mile...

db <--- almost ready to write the code

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Sorry I'm metric; yo no comprendo.

kind regards,

Jos

Quote:

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Originally Posted by JosAH

Sorry I'm metric; yo no comprendo.

kind regards,

Jos

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5 kilometers ~ 3 miles

Almost is as good as ~1.6km.

Doesn't quite roll of the tongue, though...

Quote:

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Originally Posted by Tolls

Almost is as good as ~1.6km.

Doesn't quite roll of the tongue, though...

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Waidaminnit, are we talkling about the golden ratio 'phi' here? ((1+sqrt(5))/2); 'almost is as good as phi km' sounds a bit better and can be understood by us metric folks too ;-)

kind regards,

Jos

I'll have to remember that one.

Quote:

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Originally Posted by Tolls

I'll have to remember that one.

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Good, you do that; it's going to be checked later ;-)

kind regards,

Jos

you can read some tutorials you now :) https://www.google.com/search?q=Java%20abstract%20class
lets say the first one

Quote:

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Originally Posted by Tolls

Almost is as good as ~1.6km.

Doesn't quite roll of the tongue, though...

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As a cross country runner, 5k~3m is the one I always use :(grin):