Circle

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Main Page → Exercises → Java → Solve an Exercise

Language/Type: Java classes

Write a class of objects named Circle that remembers information about a circle. You must include the following public members. It may help you to know that there is a constant named Math.PI storing the value of π, roughly 3.14159.

member name	description
`Circle(r)`	constructs a new circle with the given radius as a real number
`area()`	returns the area occupied by the circle
`circumference()`	returns the distance around the circle
`getRadius()`	returns the radius as a real number
`toString()`	returns a string representation such as `"Circle{radius=2.5}"`

You should define the entire class including the class heading, the private fields, and the declarations and definitions of all the public methods and constructor.

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Main Page → Exercises → Java → Solve an Exercise

Circle