Create an application named PackageDemo that declares and de

Create an application named PackageDemo that declares and demonstrates objects of the package class and its descendants. The package class includes auto-implemented properties for an id number, recipients name, and weight in ounces. The class also comntins a delivery price feild that is set when the weight is set as $5 for the first 32 ounces and 12 cents per ounce for every ounce over 32. b. Create a child class named InsuredPackage, which includes a field for the package\'s value. Override the method that sets a Package\'s delivery price to include insurance, which is $1 for packages valued up to $20 and $2.50 for packages valued $20 or more.

Solution

//************************************** Parent PackageDemo **************************************

package Solution;

// This program will create a PackageDemo class, contain data elements package id , package name, package //weight  and delivery price

public class PackageDemo {
  
   int packageId;
   String packageName;
   double packageWeight;
   double deliveryPrice;
  
   // get and set method of each data element
   public int getPackageId() {
       return packageId;
   }
   public void setPackageId(int packageId) {
       this.packageId = (int) Math.random();
   }
   public String getPackageName() {
       return packageName;
   }
   public void setPackageName(String packageName) {
       this.packageName = packageName;
   }
   public double getPackageWeight() {
       return packageWeight;
   }
   public void setPackageWeight(double packageWeight) {
       this.packageWeight = packageWeight;
   }
   public double getDeliveryPrice() {
       return deliveryPrice;
   }
   public void setDeliveryPrice(double deliveryPrice) {
       this.deliveryPrice = deliveryPrice;
   }
  
   //constructor
   PackageDemo(String packageName,   double packageWeight)
   {
       this.packageName=packageName;
       this.packageWeight = packageWeight;
   }
  
   /*This method will compute the delivery price of the package
   * this method assume the weight > 32 ounces
   */
   public double computeDeliveryPrice(double packageWeight)
   {
       int price=5;
       if (packageWeight > 32)
       {
           //weight is set as $5 for the first 32 ounces
           price=5;
           int cents=0;
           for (int i=1;i<(packageWeight-32);i++)
           {
               // 12 cents for each every ounce over 32
               cents +=12;
           }
           //add to the price
           price +=(cents/100);
       } // end of if loop
          
       return price;
   } //end of method
  
} //end of class

//************************************** Child class InsuredPackage **************************************

/* This program is the child class of the PackageDemo class.*/

package Solution;

public class InsuredPackage extends PackageDemo {

   //overall delivery price
   double packageValue;
  
   // This method will override the super class method and add insurance price based on the delivery price
   @Override
   public double computeDeliveryPrice(double packageWeight)
   {
       //call super class method
       double price= super.computeDeliveryPrice(packageWeight);
      
       if (price <20)
       {
           // $1 for packages valued up to $20
           this.packageValue=price + 1;
       }
       else
       {
           // $2.50 for packages valued $20 or more
           this.packageValue=price + 2.50;
       }
       return this.packageValue;
   }
   // test method
   public static void main(String[] args)
   {
      
       System.out.println(\"Create insurance package\");
       InsuredPackage insuredPackage = new InsuredPackage(\"Test Package \", 50);
       System.out.println(\"the total delivery price is \" + insuredPackage.computeDeliveryPrice(insuredPackage.getPackageWeight()));

   }
   public InsuredPackage(String packageName,   double packageWeight )
   {
       super(packageName,packageWeight);
   }
  
  
}