1. Pick a pair of concrete classes in the JDK in a parent-child relationship and discuss a few
polymorphic and/or overloaded methods. Do not use Object as the parent class - it is too trivial to
address the issues to be addressed here, and in any case, Object is the final parent of all classes in
Java.
2. Explain in a few sentences the inheritance relationship (parent-child) and its use.
3. Explain in a few sentences the polymorphism (child class overriding a method from the parent
class) and its use.
a) Write one Java class of your own with one method.
b) Write another (second) Java class that will extend the above Java class and overrides the
method from the parent class.
c) Write another (third) Java class that will extend the above Java class and overrides the method
from the parent class.
In other words, these two child classes (subclasses) will override the same method of the parent
class differently. It will be only a few lines of code in each Java class. Write System.out.println
to demonstrate they are printing different result, and that will demonstrate that the methods in the
subclasses are producing different results.
Submit the Java code and write a few sentences to explain the expected result/output of your
code.
1. Pick a pair of concrete classes in the JDK in a parent-child rela.pdf
1. 1. Pick a pair of concrete classes in the JDK in a parent-child relationship and discuss a few
polymorphic and/or overloaded methods. Do not use Object as the parent class - it is too trivial to
address the issues to be addressed here, and in any case, Object is the final parent of all classes in
Java.
2. Explain in a few sentences the inheritance relationship (parent-child) and its use.
3. Explain in a few sentences the polymorphism (child class overriding a method from the parent
class) and its use.
a) Write one Java class of your own with one method.
b) Write another (second) Java class that will extend the above Java class and overrides the
method from the parent class.
c) Write another (third) Java class that will extend the above Java class and overrides the method
from the parent class.
In other words, these two child classes (subclasses) will override the same method of the parent
class differently. It will be only a few lines of code in each Java class. Write System.out.println
to demonstrate they are printing different result, and that will demonstrate that the methods in the
subclasses are producing different results.
Submit the Java code and write a few sentences to explain the expected result/output of your
code
