Create a java class Customer.java that will represent a water company customer. It should contain the...
- 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
- Attributes
More Info:
- When a customer is created some validation of information must
occur:
- The state is a 2 character abbreviation, the value supplied must be exactly 2 characters in length
- The zip code must be 5 characters in length
- The value for previousMeterReading must be >= 0
- These rules must also be enforced in the “setters” provided for these values as well as in the constructor.
- 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”);
- method setCurrentMeterReading: This method sets the value for the data member “currentMeterReading”, if the value is <0 OR less than the previousMeterReadingfor the customer, an exception should be thrown. If a valid value is input, call the private method “calculateGallonsUsed” to set the gallonsUseddata member to the difference between the previous meter reading the current meter reading.
- 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.
- 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.
What to turn in:
- Customer.java
Homework Answers
If you have any doubts, please give me comment...
class Customer {
private String firstName;
private String lastName;
private String streetAddress;
private String city;
private String state;
private String zip;
private int previousMeterReading;
private int currentMeterReading;
private int gallonsUsed;
private double currentCharges;
public Customer() {
firstName = null;
lastName = null;
streetAddress = null;
city = null;
state = null;
zip = null;
previousMeterReading = 0;
currentMeterReading = 0;
gallonsUsed = 0;
currentCharges = 0.0;
}
public Customer(String first, String last, String street, String city, String state, String zip,
int previousReading) {
this.firstName = first;
this.lastName = last;
this.streetAddress = street;
this.city = city;
this.state = state;
this.zip = zip;
this.previousMeterReading = previousReading;
}
/**
* @param currentMeterReading the currentMeterReading to set
*/
public void setCurrentMeterReading(int currentMeterReading) {
this.currentMeterReading = currentMeterReading;
}
public void calculateGallonsUsed() {
gallonsUsed = currentMeterReading - previousMeterReading;
}
public void calculateBill() {
if (gallonsUsed <= 5000)
currentCharges = (gallonsUsed / 1000) * 10.90;
else if (gallonsUsed > 5000 && gallonsUsed <= 10000)
currentCharges = (5 * 10.90) + ((gallonsUsed - 5000) / 1000) * 10.55;
else if (gallonsUsed > 10000 && gallonsUsed <= 20000)
currentCharges = (5 * 10.90) + (5 * 10.55) + ((gallonsUsed - 10000) / 1000) * 10.00;
else if (gallonsUsed > 20000 && gallonsUsed <= 30000)
currentCharges = (5 * 10.90) + (5 * 10.55) + (10 * 10.00) + ((gallonsUsed - 20000) / 1000) * 9.45;
else
currentCharges = (5 * 10.90) + (5 * 10.55) + (10 * 10.00) + (10 * 9.45)
+ ((gallonsUsed - 30000) / 1000) * 8.60;
currentCharges += 31.54;
}
public String toString() {
return "Name: "+firstName+", "+lastName+"\nAddress: "+streetAddress+", "+city+", "+state+", "+zip+"\n Previous Meter Reading: "+previousMeterReading+"\nCurrent Meter Reading: "+currentMeterReading+"\nGallons Used: "+gallonsUsed+"\nCurrent Charges: "+currentCharges;
}
/**
* @param firstName the firstName to set
*/
public void setFirstName(String firstName) {
this.firstName = firstName;
}
/**
* @param lastName the lastName to set
*/
public void setLastName(String lastName) {
this.lastName = lastName;
}
/**
* @param streetAddress the streetAddress to set
*/
public void setStreetAddress(String streetAddress) {
this.streetAddress = streetAddress;
}
/**
* @param city the city to set
*/
public void setCity(String city) {
this.city = city;
}
/**
* @param state the state to set
*/
public void setState(String state) {
this.state = state;
}
/**
* @param zip the zip to set
*/
public void setZip(String zip) {
this.zip = zip;
}
/**
* @param previousMeterReading the previousMeterReading to set
*/
public void setPreviousMeterReading(int previousMeterReading) {
if (previousMeterReading < 0)
throw new RuntimeException("The value for the previous meter reading is “ + “ invalid, it must be greater than or equal to zero");
this.previousMeterReading = previousMeterReading;
}
/**
* @param gallonsUsed the gallonsUsed to set
*/
public void setGallonsUsed(int gallonsUsed) {
this.gallonsUsed = gallonsUsed;
}
/**
* @param currentCharges the currentCharges to set
*/
public void setCurrentCharges(doubel currentCharges) {
this.currentCharges = currentCharges;
}
/**
* @return the firstName
*/
public String getFirstName() {
return firstName;
}
/**
* @return the lastName
*/
public String getLastName() {
return lastName;
}
/**
* @return the streetAddress
*/
public String getStreetAddress() {
return streetAddress;
}
/**
* @return the city
*/
public String getCity() {
return city;
}
/**
* @return the state
*/
public String getState() {
return state;
}
/**
* @return the zip
*/
public String getZip() {
return zip;
}
/**
* @return the previousMeterReading
*/
public int getPreviousMeterReading() {
return previousMeterReading;
}
/**
* @return the currentMeterReading
*/
public int getCurrentMeterReading() {
return currentMeterReading;
}
/**
* @return the gallonsUsed
*/
public int getGallonsUsed() {
return gallonsUsed;
}
/**
* @return the currentCharges
*/
public doubel getCurrentCharges() {
return currentCharges;
}
}
If you have any doubts, please give me comment...
class Customer {
private String firstName;
private String lastName;
private String streetAddress;
private String city;
private String state;
private String zip;
private int previousMeterReading;
private int currentMeterReading;
private int gallonsUsed;
private double currentCharges;
public Customer() {
firstName = null;
lastName = null;
streetAddress = null;
city = null;
state = null;
zip = null;
previousMeterReading = 0;
currentMeterReading = 0;
gallonsUsed = 0;
currentCharges = 0.0;
}
public Customer(String first, String last, String street, String city, String state, String zip,
int previousReading) {
this.firstName = first;
this.lastName = last;
this.streetAddress = street;
this.city = city;
this.state = state;
this.zip = zip;
this.previousMeterReading = previousReading;
}
/**
* @param currentMeterReading the currentMeterReading to set
*/
public void setCurrentMeterReading(int currentMeterReading) {
this.currentMeterReading = currentMeterReading;
}
public void calculateGallonsUsed() {
gallonsUsed = currentMeterReading - previousMeterReading;
}
public void calculateBill() {
if (gallonsUsed <= 5000)
currentCharges = (gallonsUsed / 1000) * 10.90;
else if (gallonsUsed > 5000 && gallonsUsed <= 10000)
currentCharges = (5 * 10.90) + ((gallonsUsed - 5000) / 1000) * 10.55;
else if (gallonsUsed > 10000 && gallonsUsed <= 20000)
currentCharges = (5 * 10.90) + (5 * 10.55) + ((gallonsUsed - 10000) / 1000) * 10.00;
else if (gallonsUsed > 20000 && gallonsUsed <= 30000)
currentCharges = (5 * 10.90) + (5 * 10.55) + (10 * 10.00) + ((gallonsUsed - 20000) / 1000) * 9.45;
else
currentCharges = (5 * 10.90) + (5 * 10.55) + (10 * 10.00) + (10 * 9.45)
+ ((gallonsUsed - 30000) / 1000) * 8.60;
currentCharges += 31.54;
}
public String toString() {
return "Name: "+firstName+", "+lastName+"\nAddress: "+streetAddress+", "+city+", "+state+", "+zip+"\n Previous Meter Reading: "+previousMeterReading+"\nCurrent Meter Reading: "+currentMeterReading+"\nGallons Used: "+gallonsUsed+"\nCurrent Charges: "+String.format("%.2f", currentCharges);
}
/**
* @param firstName the firstName to set
*/
public void setFirstName(String firstName) {
this.firstName = firstName;
}
/**
* @param lastName the lastName to set
*/
public void setLastName(String lastName) {
this.lastName = lastName;
}
/**
* @param streetAddress the streetAddress to set
*/
public void setStreetAddress(String streetAddress) {
this.streetAddress = streetAddress;
}
/**
* @param city the city to set
*/
public void setCity(String city) {
this.city = city;
}
/**
* @param state the state to set
*/
public void setState(String state) {
this.state = state;
}
/**
* @param zip the zip to set
*/
public void setZip(String zip) {
this.zip = zip;
}
/**
* @param previousMeterReading the previousMeterReading to set
*/
public void setPreviousMeterReading(int previousMeterReading) {
if (previousMeterReading < 0)
throw new RuntimeException("The value for the previous meter reading is “ + “ invalid, it must be greater than or equal to zero");
this.previousMeterReading = previousMeterReading;
}
/**
* @param gallonsUsed the gallonsUsed to set
*/
public void setGallonsUsed(int gallonsUsed) {
this.gallonsUsed = gallonsUsed;
}
/**
* @param currentCharges the currentCharges to set
*/
public void setCurrentCharges(doubel currentCharges) {
this.currentCharges = currentCharges;
}
/**
* @return the firstName
*/
public String getFirstName() {
return firstName;
}
/**
* @return the lastName
*/
public String getLastName() {
return lastName;
}
/**
* @return the streetAddress
*/
public String getStreetAddress() {
return streetAddress;
}
/**
* @return the city
*/
public String getCity() {
return city;
}
/**
* @return the state
*/
public String getState() {
return state;
}
/**
* @return the zip
*/
public String getZip() {
return zip;
}
/**
* @return the previousMeterReading
*/
public int getPreviousMeterReading() {
return previousMeterReading;
}
/**
* @return the currentMeterReading
*/
public int getCurrentMeterReading() {
return currentMeterReading;
}
/**
* @return the gallonsUsed
*/
public int getGallonsUsed() {
return gallonsUsed;
}
/**
* @return the currentCharges
*/
public doubel getCurrentCharges() {
return currentCharges;
}
}
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