The GeometricObject and Circle classes are defined in this chapter. Analyze the following code.
public class Test {
public static void main(String[] args) {
| | GeometricObject x = new Circle(3); |
| | GeometricObject y = (Circle)(x.clone()); |
}
}
◦ After you override the clone() method and make it public in the Circle class, the problem can compile and run just fine, but y is null if Circle does not implement the Cloneable interface.
◦ To enable a Circle object to be cloned, the Circle class has to override the clone() method and implement the java.lang.Cloneable interface.
◦ The program has a compile error because the clone() method is protected in the Object class.
◦ If GeometricObject implements Cloneable and Circle overrides the clone() method, the clone() method will work fine to clone Circle objects.
They are divided into four classes: all α, all β, α/β, and α + β
Luminosity Classes
Semi-circle bridge
Classes of Levers
Classes of Microorganisms with Descriptions and Examples
One-eighth of a Circle