Question

Keep getting error where the code cannot read the text file and create an arraylist of objects from it.

HouseListTester:

import java.util.*;
//Hard codes the criteria
public class HouseListTester {
static HouseList availableHouses;
public static void main(String []args) {
availableHouses = new HouseList("C:\\Users\\jvs34\\Downloads\\houses.txt");
Criteria c1 = new Criteria(1000, 500000, 100, 5000, 0, 10);
Criteria c2 = new Criteria(1000, 100000, 500, 1200, 0, 3);
Criteria c3 = new Criteria(100000, 200000, 1000, 2000, 2, 3);
Criteria c4 = new Criteria(200000, 300000, 1500, 4000, 3, 6);
Criteria c5 = new Criteria(100000, 500000, 2500, 5000, 3, 6);
System.out.println("Test 1: ");
availableHouses.printHouses(c1);
System.out.println("Test 2: ");
availableHouses.printHouses(c2);
System.out.println("Test 3: ");
availableHouses.printHouses(c3);
System.out.println("Test 4: ");
availableHouses.printHouses(c4);
System.out.println("Test 5: ");
availableHouses.printHouses(c5);
}
}
HouseList:

import java.io.*;
import java.util.*;
//Contains arraylist of House objects that comes from house.txt to allow for easy searching
public class HouseList {

ArrayList<House> houseList = new ArrayList<>();
//Gets house.txt file for future use
public HouseList(String HouseLists) {
houseList = new ArrayList();
Scanner myFileIn = null;
try
{

myFileIn = new Scanner(new File(HouseLists));
}
catch (FileNotFoundException e)
{
System.out.println("File: "+HouseLists+" is not found");
}
//Gets house info from text file to place into arraylist
String address1;
int price1;
int area1;
int numBedrooms1;
House h1;

while(myFileIn.hasNextLine())
{
address1 = myFileIn.next();
price1 = myFileIn.nextInt();
area1 = myFileIn.nextInt();
numBedrooms1 = myFileIn.nextInt();

h1 = new House(address1, price1, area1, numBedrooms1);
houseList.add(h1);
}
}
//prints houses that meet criteria
public void printHouses(Criteria c) {
for(int i =0;i<houseList.size();i++)
{
System.out.println(houseList.get(i).toString());
}
}
//returns string of details of houses
public String getHouses(Criteria c) {
String ans = "";
for(int i = 0;i < houseList.size();i++)
{
if(houseList.get(i).satisfies(c))
{
ans = ans + houseList.get(i).toString() + "\n";
}
}
return ans;
}
}

House:

import java.util.*;
//Represents details of houses for sale
public class House {
public String address;
public int price;
public int area;
public int numberOfBedrooms;
//constructor
public House(String addr, int p, int a, int bedroom) {
address = addr;
price = p;
area = a;
numberOfBedrooms = bedroom;
}
//gets address
public String getAddress() {
return address;
}
//gets price
public int getPrice() {
return price;
}
//gets area
public int getArea() {
return area;
}
//gets rooms
public int getRoom() {
return numberOfBedrooms;
}
//Compare price, area, and rooms
public boolean satisfies(Criteria c) {
if(price < c.getMinimumPrice() || price > c.getMaximumPrice())
{
return false;
}
if(area < c.getMinimumArea() || area > c.getMaximumArea())
{
return false;
}
if(numberOfBedrooms < c.getMinimumNumberOfBedrooms() || numberOfBedrooms > c.getMaximumNumberOfBedrooms())
{
return false;
}
return true;
}
//print it out into string
public String toString() {
return (address+ " "+ price + " " + area + " " + numberOfBedrooms);
}
}

Criteria:

import java.util.*;
//contains criteria to select houses
public class Criteria {
public int minimumPrice;
public int maximumPrice;
public int minimumArea;
public int maximumArea;
public int minimumNumberOfBedrooms;
public int maximumNumberOfBedrooms;
//constructor
public Criteria(int minPrice, int maxPrice, int minArea, int maxArea, int minRoom, int maxRoom) {
minimumPrice = minPrice;
maximumPrice = maxPrice;
minimumArea = minArea;
maximumArea = maxArea;
minimumNumberOfBedrooms = minRoom;
maximumNumberOfBedrooms = maxRoom;
}
//returns minimum price
public double getMinimumPrice() {
return minimumPrice;
}
//returns maximum price
public double getMaximumPrice() {
return maximumPrice;
}
//returns minimum area
public double getMinimumArea() {
return minimumArea;
}
//returns maximum area
public double getMaximumArea() {
return maximumArea;
}
//returns minimum bedrooms
public double getMinimumNumberOfBedrooms() {
return minimumNumberOfBedrooms;
}
//returns maximum bedrooms
public double getMaximumNumberOfBedrooms() {
return maximumNumberOfBedrooms;
}
}

Text file:

123-canal-street 129000 1800 3
124-main-street 89000 1600 3
125-college-street 199000 2000 4
126-lincoln-street 56000 1200 2
127-state-street 82000 1500 3
223-canal-street 385000 4500 5
224-main-street 40000 800 2
225-college-street 37999 800 2
226-lincoln-street 125000 1200 2
227-state-street 130000 1250 3
323-canal-street 60000 900 2
324-main-street 80000 1000 2
325-college-street 45000 800 1
326-lincoln-street 63000 900 1
327-state-street 145000 1400 3
423-canal-street 199999 2000 4
424-main-street 250000 3500 5
425-college-street 350000 4600 6
426-lincoln-street 133000 1300 2
427-state-street 68000 850 1
523-canal-street 299999 3000 4
524-main-street 260000 2500 6
525-college-street 359000 4900 4
526-lincoln-street 233000 1900 2
527-state-street 58000 750 1

It would be much appreciated to get some help on this.

Answer 1

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;

//Hard codes the criteria
public class HouseListTester {
   static HouseList availableHouses;

   public static void main(String[] args) {
       availableHouses = new HouseList("houses.txt");
       Criteria c1 = new Criteria(1000, 500000, 100, 5000, 0, 10);
       Criteria c2 = new Criteria(1000, 100000, 500, 1200, 0, 3);
       Criteria c3 = new Criteria(100000, 200000, 1000, 2000, 2, 3);
       Criteria c4 = new Criteria(200000, 300000, 1500, 4000, 3, 6);
       Criteria c5 = new Criteria(100000, 500000, 2500, 5000, 3, 6);
       System.out.println("Test 1: ");
       availableHouses.printHouses(c1);
       System.out.println("Test 2: ");
       availableHouses.printHouses(c2);
       System.out.println("Test 3: ");
       availableHouses.printHouses(c3);
       System.out.println("Test 4: ");
       availableHouses.printHouses(c4);
       System.out.println("Test 5: ");
       availableHouses.printHouses(c5);
   }
}

//Contains arraylist of House objects that comes from house.txt to allow for easy searching
class HouseList {

   ArrayList<House> houseList = new ArrayList<>();

//Gets house.txt file for future use
   public HouseList(String HouseLists) {
       houseList = new ArrayList();
       Scanner myFileIn = null;
       try {

           myFileIn = new Scanner(new File(HouseLists));
       } catch (FileNotFoundException e) {
           System.out.println("File: " + HouseLists + " is not found");
       }
      
//Gets house info from text file to place into arraylist
       String address1;
       int price1;
       int area1;
       int numBedrooms1;
       House h1;

       while (myFileIn.hasNextLine()) {
           address1 = myFileIn.next();
           price1 = myFileIn.nextInt();
           area1 = myFileIn.nextInt();
           numBedrooms1 = myFileIn.nextInt();

           h1 = new House(address1, price1, area1, numBedrooms1);
           houseList.add(h1);
       }
   }

//prints houses that meet criteria
   public void printHouses(Criteria c) {
       for (int i = 0; i < houseList.size(); i++) {
           System.out.println(houseList.get(i).toString());
       }
   }

//returns string of details of houses
   public String getHouses(Criteria c) {
       String ans = "";
       for (int i = 0; i < houseList.size(); i++) {
           if (houseList.get(i).satisfies(c)) {
               ans = ans + houseList.get(i).toString() + "\n";
           }
       }
       return ans;
   }
}

//Represents details of houses for sale
class House {
   public String address;
   public int price;
   public int area;
   public int numberOfBedrooms;

//constructor
   public House(String addr, int p, int a, int bedroom) {
       address = addr;
       price = p;
       area = a;
       numberOfBedrooms = bedroom;
   }

//gets address
   public String getAddress() {
       return address;
   }

//gets price
   public int getPrice() {
       return price;
   }

//gets area
   public int getArea() {
       return area;
   }

//gets rooms
   public int getRoom() {
       return numberOfBedrooms;
   }

//Compare price, area, and rooms
   public boolean satisfies(Criteria c) {
       if (price < c.getMinimumPrice() || price > c.getMaximumPrice()) {
           return false;
       }
       if (area < c.getMinimumArea() || area > c.getMaximumArea()) {
           return false;
       }
       if (numberOfBedrooms < c.getMinimumNumberOfBedrooms() || numberOfBedrooms > c.getMaximumNumberOfBedrooms()) {
           return false;
       }
       return true;
   }

//print it out into string
   public String toString() {
       return (address + " " + price + " " + area + " " + numberOfBedrooms);
   }
}

class Criteria {
   public int minimumPrice;
   public int maximumPrice;
   public int minimumArea;
   public int maximumArea;
   public int minimumNumberOfBedrooms;
   public int maximumNumberOfBedrooms;

//constructor
   public Criteria(int minPrice, int maxPrice, int minArea, int maxArea, int minRoom, int maxRoom) {
       minimumPrice = minPrice;
       maximumPrice = maxPrice;
       minimumArea = minArea;
       maximumArea = maxArea;
       minimumNumberOfBedrooms = minRoom;
       maximumNumberOfBedrooms = maxRoom;
   }

//returns minimum price
   public double getMinimumPrice() {
       return minimumPrice;
   }

//returns maximum price
   public double getMaximumPrice() {
       return maximumPrice;
   }

//returns minimum area
   public double getMinimumArea() {
       return minimumArea;
   }

//returns maximum area
   public double getMaximumArea() {
       return maximumArea;
   }

//returns minimum bedrooms
   public double getMinimumNumberOfBedrooms() {
       return minimumNumberOfBedrooms;
   }

//returns maximum bedrooms
   public double getMaximumNumberOfBedrooms() {
       return maximumNumberOfBedrooms;
   }
}

Please create the houses.txt file in the project folder

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