public class TestAnimal { public static void main(String[] args){ display(new Dog(); display(new Lion()); display(new Animal()); display(new Bulldog()); } public static void display(Animal a) { System.out.println(a.eat()); }
public class TestAnimal { public static void main(String[] args){ display(new Dog(); display(new Lion()); display(new Animal()); display(new Bulldog()); } public static void display(Animal a) { System.out.println(a.eat()); }
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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![The source code for TestAnimal class is provided:
public class TestAnimal {
public static void main(String[] args){
display(new Dog();
display(new Lion());
display(new Animal());
display(new Bulldog();
}
public static void display(Animal a) {
System.out.println(a.eat());
}
}
Create the file TestAnimal and copy-paste its code. In the same file add the following code:
a) create a class Animal that has the only method eat() that returns a text "eating food".
b) create a class Dog, that is a subclass of Animal and has the only method eat() that returns a text "eating treats"
c) create a class Lion , that is a subclass of Animal and has no implementation (empty braces)
d) create a class Bulldog, that is a subclass of Dog and has no implementation (empty braces)
e) compile and run the program, examine the output. Explain each line of the output in your own words.
f) add one more line to the code above: display(new Object(); explain what happens in this case and why.
Copy-paste all source code that you created for this assignment, all Console output](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F545adfe4-d8f3-4ad6-9d6b-4da21555b9ec%2Fef21ed7d-c105-48a9-8928-ec6e4278249d%2Fc9fq18i_processed.png&w=3840&q=75)
Transcribed Image Text:The source code for TestAnimal class is provided:
public class TestAnimal {
public static void main(String[] args){
display(new Dog();
display(new Lion());
display(new Animal());
display(new Bulldog();
}
public static void display(Animal a) {
System.out.println(a.eat());
}
}
Create the file TestAnimal and copy-paste its code. In the same file add the following code:
a) create a class Animal that has the only method eat() that returns a text "eating food".
b) create a class Dog, that is a subclass of Animal and has the only method eat() that returns a text "eating treats"
c) create a class Lion , that is a subclass of Animal and has no implementation (empty braces)
d) create a class Bulldog, that is a subclass of Dog and has no implementation (empty braces)
e) compile and run the program, examine the output. Explain each line of the output in your own words.
f) add one more line to the code above: display(new Object(); explain what happens in this case and why.
Copy-paste all source code that you created for this assignment, all Console output
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