Answer:
Here is the TeeShirt class:
public class TeeShirt{ //class name
private int orderNumber; // private member variable of type int of class TeeShirt to store the order number
private String size; // to store the size of tshirt
private String color; // to store the color of shirt
private double price; // to store the price of shirt
public void setOrderNumber(int num){ //mutator method to set the order number
orderNumber = num; }
public void setColor(String color){ //mutator method to set the color
this.color = color; }
public void setSize(String sz){ //mutator method to set the shirt size
size = sz;
if(size.equals("XXXL") || size.equals("XXL")){ //if shirt size is XXL or XXXL
price = 22.99; // set the price to 22.99 if shirt size is XXL or XXXL
}else{ //for all other sizes of shirt
price = 19.99; } } //sets the price to 19.99 for other sizes
public int getOrderNumber(){ //accessor method to get the order number stored in orderNumber field
return orderNumber; } //returns the current orderNumber
public String getSize(){ //accessor method to get the size stored in size field
return size; } //returns the current size
public String getColor(){ //accessor method to get the color stored in color field
return color; } //returns the current color
public double getPrice(){ //accessor method to get the price stored in price field
return price; } } //returns the current price
Explanation:
Here is the sub class CustomTee:
public class CustomTee extends TeeShirt { //class CustomTee that inherits from class TeeShirt
private String slogan; //private member variable of type String of class CustomTee to store slogan
public void setSlogan(String slgn) { //mutator method to set the slogan
slogan = slgn; }
public String getSlogan() { //accessor method to get the slogan stored in slogan field
return slogan;} } //returns the current slogan
Here is DemoTees.java
import java.util.*;
public class DemoTees{ //class name
public static void main(String[] args) { //start of main method
TeeShirt tee1 = new TeeShirt(); //creates object of class TeeShirt named tee1
TeeShirt tee2 = new TeeShirt(); //creates object of class TeeShirt named tee2
CustomTee tee3 = new CustomTee(); //creates object of class CustomTee named tee3
CustomTee tee4 = new CustomTee(); //creates object of class CustomTee named tee4
tee1.setOrderNumber(100); //calls setOrderNumber method of class TeeShirt using object tee1 to set orderNumber to 100
tee1.setSize("XXL"); //calls setSize method of class TeeShirt using object tee1 to set size to XXL
tee1.setColor("blue"); //calls setColor method of class TeeShirt using object tee1 to set color to blue
tee2.setOrderNumber(101); //calls setOrderNumber method of class TeeShirt using object tee2 to set orderNumber to 101
tee2.setSize("S"); //calls setSize method of class TeeShirt using object tee2 to set size to S
tee2.setColor("gray"); //calls setColor method of class TeeShirt using object tee2 to set color to gray
tee3.setOrderNumber(102); //calls setOrderNumber method of class TeeShirt using object tee3 of class CustomTee to set orderNumber to 102
tee3.setSize("L"); //calls setSize method of class TeeShirt using object tee3 to set size to L
tee3.setColor("red"); //calls setColor method of class TeeShirt using object tee3 to set color to red
tee3.setSlogan("Born to have fun"); //calls setSlogan method of class CustomTee using tee3 object to set the slogan to Born to have fun
tee4.setOrderNumber(104); //calls setOrderNumber method of class TeeShirt using object tee4 of class CustomTee to set orderNumber to 104
tee4.setSize("XXXL"); //calls setSize method to set size to XXXL
tee4.setColor("black"); //calls setColor method to set color to black
tee4.setSlogan("Wilson for Mayor"); //calls setSlogan method to set the slogan to Wilson for Mayor
display(tee1); //calls this method passing object tee1
display(tee2); //calls this method passing object tee2
displayCustomData(tee3); //calls this method passing object tee3
displayCustomData(tee4); } //calls this method passing object tee4
public static void display(TeeShirt tee) { //method display that takes object of TeeShirt as parameter
System.out.println("Order #" + tee.getOrderNumber()); //displays the value of orderNumber by calling getOrderNumber method using object tee
System.out.println(" Description: " + tee.getSize() + " " + tee.getColor()); //displays the values of size and color by calling methods getSize and getColor using object tee
System.out.println(" Price: $" + tee.getPrice()); } //displays the value of price by calling getPrice method using object tee
public static void displayCustomData(CustomTee tee) { //method displayCustomData that takes object of CustomTee as parameter
display(tee); //displays the orderNumber size color and price by calling display method and passing object tee to it
System.out.println(" Slogan: " + tee.getSlogan()); } } //displays the value of slogan by calling getSlogan method using object tee
