Implementing method overriding
You will implement method overriding to modify inherited behavior. You will create a parent class Device and a subclass Phone that overrides a method.
This exercise is part of the course
Input/Output and Streams in Java
Exercise instructions
- Create
Phoneclass inherited from parent classDevice. - Override the
.turnOn()method. - Create a new instance of
Phone. - Calling the new method to print the message.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
// Define Phone class extending Device
class Phone ____ Device {
// Override the turnOn() method
____
void turnOn() {
System.out.println("Phone is turning on");
}
public static void main(String[] args) {
// Create instance of Phone
Phone p = new ____();
//Call turnOn() from phone instance
p.____();
}
}
class Device {
void turnOn() {
System.out.println("Device is turning on");
}
}