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A class Circle is defined in the following code:public class Circle { int radius; static String name; void getPerimeter() { } static void getArea() { }}Let c be an instance of Circle, which of the statements are correct?

Question

A class Circle is defined in the following code:public class Circle { int radius; static String name; void getPerimeter() { } static void getArea() { }}Let c be an instance of Circle, which of the statements are correct?

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Solution

  1. c.radius is a valid statement. This is because 'radius' is an instance variable and can be accessed by an instance of the class.

  2. Circle.radius is not a valid statement. 'radius' is not a static variable, it is an instance variable. Therefore, it cannot be accessed directly by the class name.

  3. c.name is a valid statement. Even though 'name' is a static variable, it can still be accessed by an instance of the class.

  4. Circle.name is a valid statement. 'name' is a static variable and can be accessed directly by the class name.

  5. c.getPerimeter() is a valid statement. 'getPerimeter' is an instance method and can be called by

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