Question

1. Create a class House with the private fields: numberOfUnits of the type int, yearBuilt of the type int, assessedPrice of the type double. A constructor for this class should have three arguments for initializing these fields.

Add accessors and mutators for all fields except a mutator for yearBuilt, and the method toString.

2. Create a class StreetHouse which extends House and has additional fields: streetNumber of the type int, homeowner of the type String, and two neighbors: leftNeighbor and rightNeighbor, both of type StreetHouse.

Create two constructors. The first one has an integer argument for initializing streetNumber. It assigns zeros to numerical fields, “No name yet” to homeowner, and null to the neighbors. The second one has arguments for initializing numerical fields and a string argument for a homeowner. Use super constructor when creating the constructor for this class. Add accessors for all fields and mutators for all fields except yearBuilt. Add the overriding toString() method.

3. Define a class Street with the following fields: streetName of the type String, houses as array of type House, and numberOfHouses of the type int. Be aware the variable numberOfHouses represents the current number of houses and may be less than the length of the array.

Create a constructor with two fields: name as String and total of the type int. It should create a street with the given name and the array of the length total filled with null houses .

Create a method

      public static boolean buildHouse (House h)

which tries to add a house to the array houses and returns true if it is successful, false otherwise.

Create a method print() for printing the list of houses for the street.

4. Write a driver program to test all your methods.
5. In Java

Answer 1

If you have any doubts, please give me comment...

class House {

private int numberOfUnits;

private int yearBuilt;

private double assessedPrice;

public House() {

}

public House(int noOfUnits, int year, double price) {

numberOfUnits = noOfUnits;

yearBuilt = year;

assessedPrice = price;

}

/**

* @return the numberOfUnits

*/

public int getNumberOfUnits() {

return numberOfUnits;

}

/**

* @return the assessedPrice

*/

public double getAssessedPrice() {

return assessedPrice;

}

/**

* @param numberOfUnits the numberOfUnits to set

*/

public void setNumberOfUnits(int numberOfUnits) {

this.numberOfUnits = numberOfUnits;

}

/**

* @param assessedPrice the assessedPrice to set

*/

public void setAssessedPrice(double assessedPrice) {

this.assessedPrice = assessedPrice;

}

/**

* @param yearBuilt the yearBuilt to set

*/

public void setYearBuilt(int yearBuilt) {

this.yearBuilt = yearBuilt;

}

public String toString() {

return "No Of Units: " + numberOfUnits + ", Year Built: " + yearBuilt + ", Assessed Price: " + assessedPrice;

}

}

class StreetHouse extends House {

private int streetNumber;

private String homeowner;

private StreetHouse leftNeighbour;

private StreetHouse rightNeighbour;

public StreetHouse(int streetNo) {

super();

streetNumber = streetNo;

setNumberOfUnits(0);

setYearBuilt(0);

setAssessedPrice(0.0);

homeowner = "No name yet";

leftNeighbour = null;

rightNeighbour = null;

}

public StreetHouse(int noOfUnits, int year, double price, int streetNo, String owner) {

super(noOfUnits, year, price);

streetNumber = streetNo;

homeowner = owner;

}

/**

* @param streetNumber the streetNumber to set

*/

public void setStreetNumber(int streetNumber) {

this.streetNumber = streetNumber;

}

/**

* @param homeowner the homeowner to set

*/

public void setHomeowner(String homeowner) {

this.homeowner = homeowner;

}

/**

* @param leftNeighbour the leftNeighbour to set

*/

public void setLeftNeighbour(StreetHouse leftNeighbour) {

this.leftNeighbour = leftNeighbour;

}

/**

* @param rightNeighbour the rightNeighbour to set

*/

public void setRightNeighbour(StreetHouse rightNeighbour) {

this.rightNeighbour = rightNeighbour;

}

/**

* @return the streetNumber

*/

public int getStreetNumber() {

return streetNumber;

}

/**

* @return the homeowner

*/

public String getHomeowner() {

return homeowner;

}

/**

* @return the leftNeighbour

*/

public StreetHouse getLeftNeighbour() {

return leftNeighbour;

}

/**

* @return the rightNeighbour

*/

public StreetHouse getRightNeighbour() {

return rightNeighbour;

}

public String toString() {

String result = super.toString();

result += "\nStreet Number: " + streetNumber + "\nHome Owner: " + homeowner + "\n";

if (leftNeighbour != null)

result += "Left Neighbour:\n" + leftNeighbour.toString() + "\n";

if (rightNeighbour != null)

result += "Right Neighbour:\n" + rightNeighbour.toString();

return result;

}

}

class Street {

private String streetName;

private House[] houses;

private int numberOfHouses;

public Street(String name, int total) {

streetName = name;

numberOfHouses = 0;

houses = new House[total];

}

public boolean buildHouse(House h) {

if (numberOfHouses >= houses.length)

return false;

houses[numberOfHouses] = h;

numberOfHouses++;

return true;

}

public void print() {

System.out.println("List of houses");

for (int i = 0; i < numberOfHouses; i++) {

System.out.println("House " + (i + 1));

System.out.println(houses[i]);

}

System.out.println();

}

}

public class HouseDriver {

public static void main(String[] args) {

Street st = new Street("L B Nagar", 5);

StreetHouse house1 = new StreetHouse(100, 2015, 20000.00, 1234, "ANUNAGA");

StreetHouse house2 = new StreetHouse(2345);

house2.setHomeowner("NAGARAJU");

house2.setNumberOfUnits(200);

house2.setYearBuilt(2016);

house2.setAssessedPrice(500.00);

house2.setLeftNeighbour(house1);

st.buildHouse(house1);

st.buildHouse(house2);

st.print();

}

}