Norksheet $1$

$1$ In the main$()$ method, declare and integer variable $x.$ Using a loop, print a countdown from $x$ to $0.$

$2$ Write two methods

a$)$ One to compute the average of two numbers.

Will this method require any inputs?

Will it have a return value?

b$)$ Another method that prints the current age of a student when given the year of birth.

Will this method require any inputs?

Will it have a return value?

$3$ Consider the methods you wrote in Q$2$:

a$.$ Can you write the preconditions

b$.$ Can you write the post$-$conditions?

c$.$ Can you write some statements that detect when the precondition is violated and print a message?

$4$ Create Project called Practice: Then create a class to represent

a$.$ Pizza

b$.$ Student

c$.$ Car

d$.$ Television

$5$ Choose another object and come up with three fields. For now, choose fields that are able to be represented as a letter, number, or true$/$false $($primitive data types$).$ Please format in pseudo$-$UML. $****$Must describe an individual thing, not a set. For example: shoe size vs number of shoes

Shoe size is a description of one pair of shoes

Number of shoes is a description of a collection of shoes

$6$ Open Eclipse and create a project called DogApplication. Create a class based on the following UML:

Dog

isBulldog : boolean

age : int

$7$ Add a driver class to the DogApplication project

DogDriver

$8$ Create a constructor in the Dog class that takes two input parameters and uses those parameters to initialize the instance variables.

$9$ In the main method inside the driver class, declare a variable of type Dog $($call it myDog$)$ and instantiate it with value of your choice.

$10$ In the main method inside the driver class, declare a variable of type Dog $($call it yourDog$).$ Instantiate it with appropriate values so that it represents a $2-$year$-$old bulldog.