Question

1. Create a java class Customer.java that will represent a water company customer. It should contain the attributes, constructors, and methods listed below, and when finished should be able to allow the included file TestWaterBills.java to work correctly.

• Customer class
  • Attributes
    • firstName: String type, initial value null
    • lastName: String type, initial value null
    • streetAddress: String type, initial value null
    • city: String type, initial value null
    • state: String type, initial value null
    • zip: String type, initial value null
    • previousMeterReading: int type, initial value 0
    • currentMeterReading: int type, initial value 0
    • gallonsUsed: int type, initial value 0
    • currentCharges: double type, initial value 0.0
  • Constructors
    • Customer(): Default constructor
    • Customer(String first, String last, String street, String city, String state, String zip, int previousReading)
  • Methods
    • setCurrentMeterReading(int reading): void method
    • calculateGallonsUsed(): void method
    • calculateBill(): void method
    • toString(): String
    • getX/setX methods for all attributes listed above

More Info:

1. When a customer is created some validation of information must occur:
   1. The state is a 2 character abbreviation, the value supplied must be exactly 2 characters in length
   2. The zip code must be 5 characters in length
   3. The value for previousMeterReading must be >= 0
   4. These rules must also be enforced in the “setters” provided for these values as well as in the constructor.
   5. If a condition is invalidated throw an exception in the form

if (previousMeterReading < 0)

            throw new RuntimeException(“The value for the previous meter reading is “ +   “ invalid, it must be greater than or equal to zero”);

1. method setCurrentMeterReading: This method sets the value for the data member “currentMeterReading”, if the value is <0 OR less than the previousMeterReading for the customer, an exception should be thrown. If a valid value is input, call the private method “calculateGallonsUsed” to set the gallonsUsed data member to the difference between the current meter reading and the previous meter reading.
2. toString(): prints out all of the customer information (all data members), along with the amount of the current bill. Be sure to format the information so that it is clear to read, and well organized.
3. calculateBill: This method computes a customer’s current bill based on the gallons used in the current month and stores the result into the “currentCharges” data member. A customers charges are calculated according to the following rules:

Rate Schedule
gallons/month	rate
first 5,000	$10.90 per 1,000 gallons
next 5, 000	$10.55 per 1,000 gallons
next 10,000	$10.00 per 1, 000 gallons
next 10,000	$9.45 per 1,000 gallons
all Over 30,000	$8.60 per 1,000 gallons

The minimum customer bill is $31.54

Use String.format OR printf so that the bill is displayed correctly as dollars and cents with 2 decimal places.

public class TestWaterBills{
public static void main(String[] args){
Customer accountOne = new Customer("Sam", "Lewis", "123 Lane Crossing", "Fairmont", "WV", 
                              "26554", 912333);
Customer accountTwo = new Customer("Terry", "Samuels", "12 Morgan Run Rd", "Fairmont", "WV", 
                              "26554", 845714);
Customer accountThree = new Customer("Anne", "Thomas", "88 Bailey Creek Rd.", "Fairmont", "WV", 
                              "26554", 125223);   

Customer accountFour = new Customer("Frank", "Barns", 
        "210 Bailey Creek Rd.", "Fairmont", "WV", 
                              "26554", 125987);   

accountOne.setCurrentMeterReading(925412);
accountOne.calculateBill();
// the next statement should print out all of the information for account one
// Sam Lewis, billed amount should be:  $138.04
System.out.println( accountOne.toString());

// now do account two

accountTwo.setCurrentMeterReading(851236);
accountTwo.calculateBill();
// the next statement should print out all of the information for account Two
// Terry Samuels,  billed amount should be:  $60.01
System.out.println( accountTwo.toString());


accountThree.setCurrentMeterReading(130001);    
accountThree.calculateBill();
  // the next statement should print out all of the information for account Three
// Anne Thomas, billed amount should be:  $52.08
System.out.println( accountThree.toString());

accountFour.setCurrentMeterReading(127250);    
accountFour.calculateBill();
  // the next statement should print out all of the information for account Four
// Frank Barns, billed amount should be:  $31.54
System.out.println( accountFour.toString());

                     
}
}

Answer 1

Please let me know if you have any doubts or you want me to modify the answer. And if you find this answer useful then don't forget to rate my answer as thumps up. Thank you! :)

public class TestWaterBills{
    public static void main(String[] args){
        Customer accountOne = new Customer("Sam", "Lewis", "123 Lane Crossing", "Fairmont", "WV",
                "26554", 912333);
        Customer accountTwo = new Customer("Terry", "Samuels", "12 Morgan Run Rd", "Fairmont", "WV",
                "26554", 845714);
        Customer accountThree = new Customer("Anne", "Thomas", "88 Bailey Creek Rd.", "Fairmont", "WV",
                "26554", 125223);

        accountOne.setCurrentMeterReading(925412);
        accountOne.calculateBill();
     System.out.println( accountOne.toString());

        accountTwo.setCurrentMeterReading(851236);
        accountTwo.calculateBill();
        System.out.println( accountTwo.toString());

        accountThree.setCurrentMeterReading(130001);
        accountThree.calculateBill();
        System.out.println( accountThree.toString());

    }
}
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
public class Customer{

    private String firstName;
    private String lastName;
    private String city;
    private String state;
    private String zip;
    private int previousMeterReading=0;
    private int currentMeterReading=0;
    private int gallonsUsed=0;
    private double currentCharges=0.0;
    private double previousBalance=0;
    private double lastPayment=0;
    private double penalty=0;

    public Customer(String sam, String first, String last, String city, String state, String zip, int previousReading){
        this.firstName = first;
        this.lastName = last;
        this.city = city;
        this.state = state;
        this.zip = zip;
        this.previousMeterReading = previousReading;
    }

    public void setCurrentMeterReading(int reading){
        currentMeterReading = reading;
        if(currentMeterReading>0 || currentMeterReading>previousMeterReading){
            calculateGallonsUsed();
        }
        else{
            throw new ArithmeticException("Please input a valid input.");
        }
    }
    public void calculatePenalty(){

    }
    private void calculateGallonsUsed(){
        gallonsUsed=this.currentMeterReading - this.previousMeterReading;
    }

    public void calculateBill(){

        if(this.gallonsUsed <= 5000){
            this.currentCharges = 10.90*this.gallonsUsed/1000;
        }
        else if(this.gallonsUsed>5000 && this.gallonsUsed<=10000){
            this.currentCharges =10.55*(this.gallonsUsed-5000)/1000 + 10.90*5000/1000;
        }
        else if(this.gallonsUsed>10000 && this.gallonsUsed<=20000){
            this.currentCharges = 10.00*(this.gallonsUsed-10000)/1000 + 10.55*5000/1000 + 10.90*5000/1000;
        }
        else if(this.gallonsUsed>20000 && this.gallonsUsed<=30000){
            this.currentCharges = 9.45*(this.gallonsUsed-20000)/1000 + 10.00*10000/1000 + 10.55*5000/1000 + 10.90*5000/1000;
        }
        else{
            this.currentCharges = 8.60*(this.gallonsUsed-30000)/1000 + 9.45*10000/1000 + 10.00*10000/1000 + 10.55*5000/1000 + 10.90*5000/1000;
        }

    }
    public String toString(){
        String out = String.format(this.firstName+" "+this.lastName+", "+", "+this.city+", "+this.state+" "+this.zip+". The account bill is: %.2f", this.currentCharges);
        return out;
    }

    //getters listed here
    public String getFirstName(){
        return this.firstName;
    }

    public String getLastName(){
        return this.lastName;
    }

    public String getCity(){
        return this.city;
    }

    public String getState(){
        return this.state;
    }

    public String getZip(){
        return this.zip;
    }

    public int getPreviousMeterReading(){
        return this.previousMeterReading;
    }

    public int getCurrentMeterReading(){
        return this.currentMeterReading;
    }

    public int getGallonsUsed(){
        return this.gallonsUsed;
    }

    public double getCurrentCharges(){
        return this.currentCharges;
    }

    public double getPreviousBalance(){
        return this.previousBalance;
    }

    public double getLastPayment(){
        return this.lastPayment;
    }

    public double getPenalty(){
        return this.penalty;
    }
    //end of getters list

    //start of setters list
    public void setFirstName(String newFirst){
        this.firstName = newFirst;
    }

    public void setLastName(String newLast){
        this.lastName = newLast;
    }

    public void setCity(String newCity){
        this.city = newCity;
    }

    public void setState(String newState){
        this.state = newState;
    }

    public void setZip(String newZip){
        this.zip = newZip;
    }

    public void setPreviousMeterReading(int newPreviousMeterReading){
        this.previousMeterReading = newPreviousMeterReading;
    }

    public void setMeterReading(int newMeterReading){
        this.currentMeterReading = newMeterReading;
    }

    public void setGallonsUsed(int newGallons){
        this.gallonsUsed = newGallons;
    }

    public void setCurrentCharges(double newCharges){
        this.currentCharges = newCharges;
    }

    public void setPreviousBalance(double oldBalance){
        this.previousBalance = oldBalance;
    }

    public void setLastPayment(double payment){
        this.lastPayment = payment;
    }

    public void setPenalty(double penalty){
        this.penalty = penalty;
    }

}

TestWaterBill /ldeaProjects TestWaterBill]- /src/TestWaterBills.java [TestWaterBill] TestWaterBill src TestWaterBills Project r GTestWaterBills.java 、 @Customer.java public class TestwaterBiils * ÷ ' Testwatersill-/ldeaProjects/TestwaterBill ▼ public static void main(String[] args) idea out Customer accountOne new Customer sam: "Sam",first: "Lewis", last: "123 Lane Crossing", city: "Fairmont", state: "W" Customer accountTwo = new Customer( sam: "Terry", first "Samuels", last: "12 Morgan Run Rd", city: "Eaïmont", state.wr Customer account Three new Custoner sam: "Anne", first: "Thomas",last: "88 Bailey Creek Rd.", city: "Eaicont" stae"w accountOne. setCurrentHeterReading(925412); zip: "26554", previousRead ing: 9 zip: 26554" zip: "26554",previousReading: 125223); 912333; 845714); Customer TestWaterBills TestWater Bill.im ト External Libraries accountOne.calculateBill); Scratches and Consoles System.out.print In accountOne.toString)): 12 13 14 15 16 accountTwo.setCurrentMeterReading( 851236) accountTwo.calculateBill) System.out.print In accountTwo.toString(): 18 19 20 21 accountThree.setCurrentMeterReading(130001) accountThree.calculateBill) System.out.print In account Three.toString)); 23 TestWaterBills main() Run: Main /Library/Java/Ja aVirtuaWachines/jdk-9 0 4 dk/Contents/H e/bin/ ava avaagent/Applications/Intell J IDEA CE app/Contents/lib/idea_rt ar 62769 /Applications/IntelUJ IDEA CE app/Contents/bi t Lewis 123 Lane Crossing, Fairmont, W 26554. The account bill is: 138.84 Sanuels 12 Morgan Run Rd, Fairmont, W 26554. The account bill is: 68.81 Thonas 88 Bailey Creek Rd.,Fairmont, W 26554. The account bitl is: 52.98 Process finished with exit code Compilation completed successfully in 8s 567ms (4 minutes ago) Q 18:1 LF: UTF-8: 'b