Question

Need a Java program, great if anyone is able to help

You have been asked to write an analysis of the deer population by town in New Jersey. The accompanying file contains data about each town. The format of the file is the name of the town, square miles and the number of deer counted. You will need to produce the report as follow:

Township               Square    Deer                   Deer Per           Deer/Tick        Tick Threat
Name                      Miles      Population         Square Mile     Coefficient      Indicator

Green Town         158.98       9865                    62.05                  0.39               GREEN

The Deer/Tick coefficient is calculated by dividing the number (deer per square mile)/Square miles.

The higher the coefficient the denser the deer population and the greater the threat of tick infestation to humans. The tick threat is indicated by a color to indicate the danger to human for diseases such as Lyme disease as follows; red if the coefficient is .35 or below, green if coefficient is above .35 and below .50, yellow of the coefficient is above .50 and below .65, red if the coefficient is about .65 and below 0.75 and white if the coefficient is about 0.75.

You will create program to offer the user the ability to produce the report as show about in alphabetical order by township name or in size order by township square mile. You program must also allow the user to type in the name of the township or use a menu to select a town to look up the above data for the selected township.

Your program must use a class to hold and PROCESS the town data. Your program must also use an array of objects to process the data. You will be graded on your use of Methods, on your reading of the data from the file, your use of proper formatting techniques.

Here is the data file info

City of Red
37.81 1137
Boro of Orange
1.77 1071
Yellow City
83.13 1034
Green Town   
4.79 2819
Blueville
45.71 1514
Indigo Village
4.15 442
Violeton   
9.27 2225
Redburg
7.46 977
Orange Park
1.36 533
Yellow Falls   
18.75 4556
Green Haven
6.12 242
Blue City
44.69 1979
Indigo Township
3.56 365
Violet Point   
35.27 4161

Answer 1

Given below is the code for the question. Please do rate the answer if it helped. Thank you.
If you are using eclipse as your IDE, make sure you don't put the input file inside the src folder. Just put is directly under the project folder, otherwise you will get file not found error.

towns.txt
----
City of Red
37.81 1137
Boro of Orange
1.77 1071
Yellow City
83.13 1034
Green Town   
4.79 2819
Blueville
45.71 1514
Indigo Village
4.15 442
Violeton   
9.27 2225
Redburg
7.46 977
Orange Park
1.36 533
Yellow Falls   
18.75 4556
Green Haven
6.12 242
Blue City
44.69 1979
Indigo Township
3.56 365
Violet Point   
35.27 4161

TownData.java
-----

public class TownData {
   private String townshipName;
   private double squareMiles;
   private int deerPopulation;
  
   public TownData(String name) {
       townshipName = name;
   }
   public String getTownshipName() {
       return townshipName;
   }
   public void setTownshipName(String townshipName) {
       this.townshipName = townshipName;
   }
   public double getSquareMiles() {
       return squareMiles;
   }
   public void setSquareMiles(double squareMiles) {
       this.squareMiles = squareMiles;
   }
   public int getDeerPopulation() {
       return deerPopulation;
   }
   public void setDeerPopulation(int deerPopulation) {
       this.deerPopulation = deerPopulation;
   }
  
  
   public double getDeerPerSqMile() {
       return deerPopulation/squareMiles;
   }
  
   public double getTickCoefficient() {
       return getDeerPerSqMile()/squareMiles;
   }
  
  
   public String getThreatIndicator() {
       double tc = getTickCoefficient();
       if(tc <= 0.35)
           return "RED";
       else if(tc <= 0.50)
           return "GREEN";
       else if(tc <= 0.65)
           return "YELLOW";
       else if(tc <= 0.75)
           return "RED";
       else
           return "WHITE";
   }
  
   public String toString() {
       return "Township Name: " + townshipName + "\n"
               + String.format("Square Miles: %.2f" , squareMiles) + "\n"
               + "Deer Population: " + deerPopulation + "\n"
               + String.format("Deer per Square Mile: %.2f" , getDeerPerSqMile()) + "\n"
               + String.format("Deer/Tick Coefficient: %.2f" , getTickCoefficient()) + "\n"
               + "Tick Threat Indicator: " + getThreatIndicator() +"\n";
   }
}

public class TownData {
   private String townshipName;
   private double squareMiles;
   private int deerPopulation;
  
   public TownData(String name) {
       townshipName = name;
   }
   public String getTownshipName() {
       return townshipName;
   }
   public void setTownshipName(String townshipName) {
       this.townshipName = townshipName;
   }
   public double getSquareMiles() {
       return squareMiles;
   }
   public void setSquareMiles(double squareMiles) {
       this.squareMiles = squareMiles;
   }
   public int getDeerPopulation() {
       return deerPopulation;
   }
   public void setDeerPopulation(int deerPopulation) {
       this.deerPopulation = deerPopulation;
   }
  
  
   public double getDeerPerSqMile() {
       return deerPopulation/squareMiles;
   }
  
   public double getTickCoefficient() {
       return getDeerPerSqMile()/squareMiles;
   }
  
  
   public String getThreatIndicator() {
       double tc = getTickCoefficient();
       if(tc <= 0.35)
           return "RED";
       else if(tc <= 0.50)
           return "GREEN";
       else if(tc <= 0.65)
           return "YELLOW";
       else if(tc <= 0.75)
           return "RED";
       else
           return "WHITE";
   }
  
   public String toString() {
       return "Township Name: " + townshipName + "\n"
               + String.format("Square Miles: %.2f" , squareMiles) + "\n"
               + "Deer Population: " + deerPopulation + "\n"
               + String.format("Deer per Square Mile: %.2f" , getDeerPerSqMile()) + "\n"
               + String.format("Deer/Tick Coefficient: %.2f" , getTickCoefficient()) + "\n"
               + "Tick Threat Indicator: " + getThreatIndicator() +"\n";
   }
}

ProcessTowns.java
-------------
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class ProcessTowns {
   private static Scanner input = new Scanner(System.in);

   private static int readFile(String filename, TownData[] towns) {
       int n = 0;
       try {
           Scanner inFile = new Scanner(new File(filename));
           while(inFile.hasNextLine()) {
               towns[n] = new TownData(inFile.nextLine().strip());
               towns[n].setSquareMiles(inFile.nextDouble());
               towns[n].setDeerPopulation(inFile.nextInt());
               if(inFile.hasNextLine())
                   inFile.nextLine();//get rid of newline
               n++;
           }
           inFile.close();
       } catch (FileNotFoundException e) {
           System.out.println(e.getMessage());
           System.exit(1);
       }
       return n;

      
   }
   public static void main(String[] args) {
       String filename;
       TownData[] towns = new TownData[100];
       int n, choice = 0;
      
       System.out.print("Enter input filename: ");
       filename = input.nextLine();
      
      
       n = readFile(filename, towns);
       while(choice != 4) {
           System.out.println("1. Print towns sorted by name");
           System.out.println("2. Print towns sorted by square miles");
           System.out.println("3. Lookup town");
           System.out.println("4. Exit");
           System.out.println("Enter your choice: ");
           choice = input.nextInt();
           input.nextLine();//get rid of newline
           switch(choice) {
           case 1:
               sortByNameAsc(towns, n);
               print(towns, n);
               break;
           case 2:
               sortByMilesAsc(towns, n);
               print(towns, n);
               break;
           case 3:
               lookup(towns,n);
               break;
           case 4:
               break;
           default:
               System.out.println("Invalid Choice!");
           }
           System.out.println();
       }
  
   }
  
   private static void sortByNameAsc(TownData[] towns, int n) {
       int i, j, minIdx;
       TownData temp;
      
       for(i = 0; i < n; i++){
           minIdx = i;
           for(j = i+1; j < n; j++){
               if(towns[j].getTownshipName().compareTo(towns[minIdx].getTownshipName()) < 0)
                   minIdx = j;
           }
           temp = towns[i];
           towns[i] = towns[minIdx];
           towns[minIdx] = temp;
       }
   }
  
   private static void sortByMilesAsc(TownData[] towns, int n) {
       int i, j, minIdx;
       TownData temp;
      
       for(i = 0; i < n; i++){
           minIdx = i;
           for(j = i+1; j < n; j++){
               if(towns[j].getSquareMiles() < towns[minIdx].getSquareMiles())
                   minIdx = j;
           }
           temp = towns[i];
           towns[i] = towns[minIdx];
           towns[minIdx] = temp;
       }
   }
  
   private static void print(TownData[] towns, int n ) {
       System.out.printf("%15s %15s %15s %15s %15s %15s\n", "Township", "Square", "Deer" , "Deer Per", "Deer/Tick", "Tick Threat");
       System.out.printf("%15s %15s %15s %15s %15s %15s\n", "Name", "Miles", "Population" , "Square Mile", "Coefficient", "Indicator");
       for(int i = 0; i < n; i++) {
           System.out.printf("%15s %15.2f %15d %15.2f %15.2f %15s\n", towns[i].getTownshipName(), towns[i].getSquareMiles(), towns[i].getDeerPopulation() ,
                   towns[i].getDeerPerSqMile(), towns[i].getTickCoefficient(), towns[i].getThreatIndicator());

       }
       System.out.println();
   }
  
   private static int search(TownData[] towns, int n, String name) {
       for(int i = 0; i < n; i++) {
           if(towns[i].getTownshipName().equalsIgnoreCase(name))
               return i;
       }
       return -1;
   }
  
   private static void lookup(TownData[] towns, int n ) {
       String name;
       System.out.println("Enter name of town to lookup: ");
       name = input.nextLine();
       int idx = search(towns, n, name);
       if(idx == -1)
           System.out.println("No such town!");
       else
           System.out.println(towns[idx]);
      
      
   }
}

output
----
Enter input filename: towns.txt
1. Print towns sorted by name
2. Print towns sorted by square miles
3. Lookup town
4. Exit
Enter your choice:
1
Township Square Deer Deer Per Deer/Tick Tick Threat
Name Miles Population Square Mile Coefficient Indicator
Blue City 44.69 1979 44.28 0.99 WHITE
Blueville 45.71 1514 33.12 0.72 RED
Boro of Orange 1.77 1071 605.08 341.86 WHITE
City of Red 37.81 1137 30.07 0.80 WHITE
Green Haven 6.12 242 39.54 6.46 WHITE
Green Town 4.79 2819 588.52 122.86 WHITE
Indigo Township 3.56 365 102.53 28.80 WHITE
Indigo Village 4.15 442 106.51 25.66 WHITE
Orange Park 1.36 533 391.91 288.17 WHITE
Redburg 7.46 977 130.97 17.56 WHITE
Violet Point 35.27 4161 117.98 3.34 WHITE
Violeton 9.27 2225 240.02 25.89 WHITE
Yellow City 83.13 1034 12.44 0.15 RED
Yellow Falls 18.75 4556 242.99 12.96 WHITE

1. Print towns sorted by name
2. Print towns sorted by square miles
3. Lookup town
4. Exit
Enter your choice:
2
Township Square Deer Deer Per Deer/Tick Tick Threat
Name Miles Population Square Mile Coefficient Indicator
Orange Park 1.36 533 391.91 288.17 WHITE
Boro of Orange 1.77 1071 605.08 341.86 WHITE
Indigo Township 3.56 365 102.53 28.80 WHITE
Indigo Village 4.15 442 106.51 25.66 WHITE
Green Town 4.79 2819 588.52 122.86 WHITE
Green Haven 6.12 242 39.54 6.46 WHITE
Redburg 7.46 977 130.97 17.56 WHITE
Violeton 9.27 2225 240.02 25.89 WHITE
Yellow Falls 18.75 4556 242.99 12.96 WHITE
Violet Point 35.27 4161 117.98 3.34 WHITE
City of Red 37.81 1137 30.07 0.80 WHITE
Blue City 44.69 1979 44.28 0.99 WHITE
Blueville 45.71 1514 33.12 0.72 RED
Yellow City 83.13 1034 12.44 0.15 RED

1. Print towns sorted by name
2. Print towns sorted by square miles
3. Lookup town
4. Exit
Enter your choice:
3
Enter name of town to lookup:
abc
No such town!

1. Print towns sorted by name
2. Print towns sorted by square miles
3. Lookup town
4. Exit
Enter your choice:
3
Enter name of town to lookup:
Redburg
Township Name: Redburg
Square Miles: 7.46
Deer Population: 977
Deer per Square Mile: 130.97
Deer/Tick Coefficient: 17.56
Tick Threat Indicator: WHITE

1. Print towns sorted by name
2. Print towns sorted by square miles
3. Lookup town
4. Exit
Enter your choice:
4