Question

I need the output of the code like this in java

First we create a new building
and display the result:

This building has no apartments.

Press enter to continue.........................

Now we add some apartments to the building
and display the result:

This building has the following apartments:

Unit 1 3 Bedroom
Rent $450 per month
Currently unavailable

Unit 2 2 Bedroom
Rent $400 per month
Currently available

Unit 3 4 Bedroom
Rent $1000 per month
Currently unavailable

Unit 4 1 Bedroom
Rent $500 per month
Currently unavailable

Unit 5 5 Bedroom
Rent $10000 per month
Currently available

Press enter to continue.........................

Now we try to add another apartment to the building
Cannot add another apartment the building is full.

Now we create a new building and add some apartments
then we collect the rent from all the occupied apartments
The total rent collected was: $2500

Finally we use the getUnits method to get a copy of the 3rd unit
from the building and change its rent to $10then we display
the building again to show that the apartment has not changed.

This building has the following apartments:

Unit 1 3 Bedroom
Rent $450 per month
Currently unavailable

Unit 2 2 Bedroom
Rent $400 per month
Currently available

Unit 3 4 Bedroom
Rent $1000 per month
Currently unavailable

Unit 4 1 Bedroom
Rent $500 per month
Currently unavailable

Unit 5 5 Bedroom
Rent $10000 per month
Currently available

Unit 6 3 Bedroom
Rent $550 per month
Currently unavailable

Press enter to end the program...................

and now I have to make a new class Building.java to show output like this given above and given below is the main java file

package lab06;

import properties.Building;
import properties.Apartment;
import util1228.Utilities;

//Tests the class Building

public class Lab06Driver {
    public static void main(String[] args) {
        
        //testing constructor and toString
        System.out.println("\nFirst we create a new building");
        Building b=new Building(5);
        System.out.println("and display the result:\n");
        System.out.printf("%s\n\n", b);
        Utilities.pause("Press enter to continue.........................");

        //testing addUnit
        System.out.println("\nNow we add some apartments to the building");
        b.addUnit(new Apartment(1,3,450,true));
        b.addUnit(new Apartment(2,2,400,false));
        b.addUnit(new Apartment(3,4,1000,true));
        b.addUnit(new Apartment(4,1,500,true));
        b.addUnit(new Apartment(5,5,10000,false));     
        System.out.println("and display the result:\n");
        System.out.printf("%s\n", b);
        Utilities.pause("Press enter to continue.........................");

        System.out.println("\nNow we try to add another "
                + "apartment to the building");
        b.addUnit(new Apartment(6,3,550,true));
        
        
        
        //testing collectRent
        System.out.println("\nNow we create a new building "
                + "and add some apartments");
        b=new Building(10);
        b.addUnit(new Apartment(1,3,450,true));
        b.addUnit(new Apartment(2,2,400,false));
        b.addUnit(new Apartment(3,4,1000,true));
        b.addUnit(new Apartment(4,1,500,true));
        b.addUnit(new Apartment(5,5,10000,false)); 
        b.addUnit(new Apartment(6,3,550,true));
        System.out.println("then we collect the rent from "
                + "all the occupied apartments");
        System.out.println("The total rent collected was: $"+b.collectRent());
        
        //testing getUnits
        System.out.print("\nFinally we use the getUnits method to get a copy "
                + "of the 3rd unit \nfrom the building and change its rent to "
                + "$10");
        b.getUnits()[2].setRent(10);
        System.out.println("then we display \nthe building again to show that "
                + "the apartment has not changed.\n");
        System.out.printf("%s\n", b);
        Utilities.pause("Press enter to end the program...................");
    }
}

Answer 1

Lab06Driver .java

----------------------------

package com.faisal.com.laraib;

public class Lab06Driver {
public static void main(String[] args) {
  
//testing constructor and toString
System.out.println("\nFirst we create a new building");
Building b=new Building(5);
System.out.println("and display the result:\n");
// System.out.printf("%s\n\n", b.displayApartment());
b.displayApartment();
Utilities.pause("Press enter to continue.........................");

//testing addUnit
System.out.println("\nNow we add some apartments to the building");
b.addUnit(new Apartment(1,3,450,true));
b.addUnit(new Apartment(2,2,400,false));
b.addUnit(new Apartment(3,4,1000,true));
b.addUnit(new Apartment(4,1,500,true));
b.addUnit(new Apartment(5,5,10000,false));   
System.out.println("and display the result:\n");
// System.out.printf("%s\n", b);
b.displayApartment();
Utilities.pause("Press enter to continue.........................");

System.out.println("\nNow we try to add another "
+ "apartment to the building");
b.addUnit(new Apartment(6,3,550,true));
  
  
  
//testing collectRent
System.out.println("\nNow we create a new building "
+ "and add some apartments");
b=new Building(10);
b.addUnit(new Apartment(1,3,450,true));
b.addUnit(new Apartment(2,2,400,false));
b.addUnit(new Apartment(3,4,1000,true));
b.addUnit(new Apartment(4,1,500,true));
b.addUnit(new Apartment(5,5,10000,false));
b.addUnit(new Apartment(6,3,550,true));
System.out.println("then we collect the rent from "
+ "all the occupied apartments");
System.out.println("The total rent collected was: $"+b.collectRent());
// b.displayApartment();
  
//testing getUnits
System.out.print("\nFinally we use the getUnits method to get a copy "
+ "of the 3rd unit \nfrom the building and change its rent to "
+ "$10");
b.getUnits(3,10);
System.out.println("then we display \nthe building again to show that "
+ "the apartment has not changed.\n");
// System.out.printf("%s\n", b);
b.displayApartment();
Utilities.pause("Press enter to end the program...................");
}
}
-------------------------------

Building.java

-----------------------------

package com.faisal.com.laraib;

import java.util.ArrayList;

public class Building {
ArrayList<Apartment> apartmentsList=null;
int numberApartment;
  
  
   public Building(int n) {
       numberApartment=n;
       apartmentsList=new ArrayList<Apartment>(n);
   }
   public void addUnit(Apartment apartment) {
  
       if(numberApartment>=apartmentsList.size()+1) {
           apartmentsList.add(apartment);
       }
       else {
           System.out.println("Cannot add another apartment the building is full.");
       }
   }
   public int collectRent() {
       int totalRent=0;
       for(Apartment apartment:apartmentsList) {
           if(apartment.isAvailabel()) {
               totalRent=totalRent+apartment.getRent();
           }
       }
       return totalRent;
   }
  
   public void getUnits(int unit, int newRent) {
      
       for(Apartment apartment:apartmentsList) {
           if(unit==apartment.getFloorNumber()) {
               apartment.setRent(newRent);
           }
       }
   }
  
   public void displayApartment() {
       if(apartmentsList.size()==0) {
           System.out.println("This building has no apartments.");
       }else {
           for(Apartment apartment:apartmentsList) {
              
               System.out.println("Unit "+apartment.getFloorNumber()+" "+apartment.getFlatNumber()+" Bedroom");
               System.out.println("Rent $"+apartment.getRent()+" per month");
               if(apartment.isAvailabel()) {
                   System.out.println("Currently unavailable");
               }
               else {
                   System.out.println("Currently available");
               }
               System.out.println();
           }
      
       }
      
   }
   public int getNumberApartment() {
       return numberApartment;
   }
   public void setNumberApartment(int numberApartment) {
       this.numberApartment = numberApartment;
   }
  
}
------------------------

Apartment.java

package com.faisal.com.laraib;

public class Apartment {
  
   int floorNumber;
   int flatNumber;
   int rent;
   boolean availabel;
   public Apartment(int floorNumber, int flatNumber, int rent, boolean availabel) {
       super();
       this.floorNumber = floorNumber;
       this.flatNumber = flatNumber;
       this.rent = rent;
       this.availabel = availabel;
   }
   public int getFloorNumber() {
       return floorNumber;
   }
   public void setFloorNumber(int floorNumber) {
       this.floorNumber = floorNumber;
   }
   public int getFlatNumber() {
       return flatNumber;
   }
   public void setFlatNumber(int flatNumber) {
       this.flatNumber = flatNumber;
   }
   public int getRent() {
       return rent;
   }
   public void setRent(int rent) {
       this.rent = rent;
   }
   public boolean isAvailabel() {
       return availabel;
   }
   public void setAvailabel(boolean availabel) {
       this.availabel = availabel;
   }
  
  
  

}
---------------------------

Utilities.java

-------------------------

package com.faisal.com.laraib;

public class Utilities {

   public static void pause(String msg) {
       System.out.println(msg);
      
   }

}
------------------------------

SAMPLE OUTPUT:

First we create a new building
and display the result:

This building has no apartments.
Press enter to continue.........................

Now we add some apartments to the building
and display the result:

Unit 1 3 Bedroom
Rent $450 per month
Currently unavailable

Unit 2 2 Bedroom
Rent $400 per month
Currently available

Unit 3 4 Bedroom
Rent $1000 per month
Currently unavailable

Unit 4 1 Bedroom
Rent $500 per month
Currently unavailable

Unit 5 5 Bedroom
Rent $10000 per month
Currently available

Press enter to continue.........................

Now we try to add another apartment to the building
Cannot add another apartment the building is full.

Now we create a new building and add some apartments
then we collect the rent from all the occupied apartments
The total rent collected was: $2500

Finally we use the getUnits method to get a copy of the 3rd unit
from the building and change its rent to $10then we display
the building again to show that the apartment has not changed.

Unit 1 3 Bedroom
Rent $450 per month
Currently unavailable

Unit 2 2 Bedroom
Rent $400 per month
Currently available

Unit 3 4 Bedroom
Rent $10 per month
Currently unavailable

Unit 4 1 Bedroom
Rent $500 per month
Currently unavailable

Unit 5 5 Bedroom
Rent $10000 per month
Currently available

Unit 6 3 Bedroom
Rent $550 per month
Currently unavailable

Press enter to end the program...................
-----------------------------------------------------------------

SUMMARY:

I have provided the solution as per your requirement, i hope you're satisfied with the way i have approached. please dont hesitate to give me a Like if you like it, i appreciate your like. If you have any queries you can shoot them any time in comments section. I will be glad to help you.
Thank you :)