Java question

When I run the following programs in NETBEANS it runs but instantly displays this message.

I need this program to run in netbeans so take note of the package info.

 

"

run:

********** Welcome to the US Crime Statistical Application **************************

Usage: "java UserCrimeStatsApp Crime.csv

BUILD SUCCESSFUL (total time: 0 seconds)

"

 

I understand i am getting this message because of this statement.

if (args.length != 1) {

System.out.println("Usage: "java UserCrimeStatsApp Crime.csv");

return;

 

I do not understand how to get it to run the program properly.

 

If you could give me step by step instructions on how to run this properly it would be appreciated.

The only place i see to read the Crime.csv is line 195 of the test program. is that the only place i need to put the this file information?

If you could include a lot of //notes explaining a ton of stuff through-out the file it would be awesome.

If you see any ways to make the program more unique so i don't turn in the same thing as another student that would also be good.

 

 

I will attach the assignment, the file to read the information from, and the 2 java files./*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package uscrimeclass;

/**
 *
 * @author Izzy
 */
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.Scanner;
import java.io.File;
/**
 *
 * @author
 */
public class TestUSCrime {
    static Scanner input = new Scanner(System.in);

    /**
     *
     * @param args
     */
    public static void main(String[] args) {
        long startTime = System.currentTimeMillis();
        long endTime = 0;
        System.out.println("********** Welcome to the US Crime Statistical Application **************************");
        if (args.length != 1) {
            System.out.println("Usage: \"java UserCrimeStatsApp Crime.csv");
            return;
        }

        USCrimeClass[] usCrimeData = readFileData(args[0]);

        String choice;
        while (true) {
            
            String menu = "\nEnter the number of the question you want answered. Enter ‘Q’ to quit the program :\n"
                    + "1. What were the percentages in population growth for each consecutive year from 1994 – 2013?\n"
                    + "2. What year was the Murder rate the highest?\n"
                    + "3. What year was the Murder rate the lowest?\n"
                    + "4. What year was the Robbery rate the highest?\n"
                    + "5. What year was the Robbery rate the lowest?\n"
                    + "Q. Quit the program";
            System.out.println(menu);
            choice = getInput();
            System.out.println();
            switch (choice) {
            case "1":
                getPercentage(usCrimeData);
                break;
            case "2":
                System.out.println("The Murder rate was highest in "
                        + murderRate(usCrimeData));
                break;
            case "3":
                System.out.println("The Murder rate was lowest in "
                        + lowestMurderRate(usCrimeData));
                break;
            case "4":
                System.out.println("The Robbery rate was highest in "
                        + getHighRR(usCrimeData));
                break;
            case "5":
                System.out.println("The Robbery rate was lowest in "
                        + getLwRR(usCrimeData));
                break;

            case "Q":
                System.out
                        .println("Thank you for trying the US Crimes Statistics Program.");
                endTime = System.currentTimeMillis();
                System.out.println("Elapsed time in seconds was: "
                        + (endTime - startTime) / 1000);
                return;
            default:
                System.out
                        .println("Error: Invalid choice selected!! Try again.\n");
                break;
            }
        }

        
        
    }

    /**
     * function to display menu to user
     */
    static void displayMenu() {

    }

    public static String getInput() {
        String choice;
        System.out.print("\nEnter your selection: ");
        choice = input.next();
        return choice;
    }


    /***
     *
     * @param usCrimeData
     * @return
     */
    public static int murderRate(USCrimeClass[] usCrimeData) {
        int year = 0;
        float maxRate = 0;
        for (USCrimeClass crime : usCrimeData) {
            if (crime.getMurderRate() > maxRate) {
                maxRate = crime.getMurderRate();
                year = crime.getYear();
            }
        }
        return year;
    }


    /***
     *
     * @param usCrimeData
     * @return
     */
    public static int lowestMurderRate(USCrimeClass[] usCrimeData) {
        int year = 0;
        float minRate = usCrimeData[0].getMurderRate();
        for (USCrimeClass crime : usCrimeData) {
            if (crime.getMurderRate() < minRate) {
                minRate = crime.getMurderRate();
                year = crime.getYear();
            }
        }
        return year;
    }

    /***
     *
     * @param usCrimeData
     * @return
     */
    public static int getHighRR(USCrimeClass[] usCrimeData) {
        int year = 0;
        float maxRate = 0;
        for (USCrimeClass crime : usCrimeData) {
            if (crime.getRobberyRate() > maxRate) {
                maxRate = crime.getRobberyRate();
                year = crime.getYear();
            }
        }
        return year;
    }

    /****
     *
     * @param usCrimeData
     * @return
     */
    public static int getLwRR(USCrimeClass[] usCrimeData) {
        int year = 0;
        float minRate = usCrimeData[0].getRobberyRate();
        for (USCrimeClass crime : usCrimeData) {
            if (crime.getRobberyRate() < minRate) {
                minRate = crime.getRobberyRate();
                year = crime.getYear();
            }
        }
        return year;
    }

    
    /***
     *
     * @param usCrimeData
     */
    public static void getPercentage(USCrimeClass[] usCrimeData) {
        float growth;
        for (int i = 0; i < usCrimeData.length - 1; i++) {
            growth = 100
                    * (float) (usCrimeData[i + 1].getPopulation() - usCrimeData[i]
                            .getPopulation()) / usCrimeData[i].getPopulation();
            System.out.println("[" + usCrimeData[i].getYear() + "-"
                    + usCrimeData[i + 1].getYear() + "]: "
                    + String.format("%.4f", growth) + "%");
        }
    }

    

    /***
     *
     * @param filename
     * @return
     */
    public static USCrimeClass[] readFileData(String filename) {
        USCrimeClass[] data = new USCrimeClass[20];
        int noLine = 0;
        String singleLine;
        try {
            // readFileData file
            Scanner console = new Scanner(new File("C:/Users/Izzy/Desktop/Crime.csv"));

            // ignore column name
            console.nextLine();
            while (console.hasNext()) {
                singleLine = console.nextLine();
                String[] usCrimeData = singleLine.split(",");
                data[noLine] = new USCrimeClass(Integer.parseInt(usCrimeData[0]));
                data[noLine].setRobberyRate(Float.parseFloat(usCrimeData[9]));
                data[noLine].setPopulation(Integer.parseInt(usCrimeData[1]));
                data[noLine].setMurderRate(Float.parseFloat(usCrimeData[5]));
                noLine++;
            }
            
            //close I/O
            console.close();
        } catch (FileNotFoundException e) {
            System.out.println(e);

        }
        
        

        return data;
    }

}/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package uscrimeclass;

/**
 *
 * @author Izzy
 */
public class USCrimeClass {

    private float murderRate;
    private float robberyRate;
    private int popGrowth;
    private int year;

    
    /**
     *
     * @param year
     */
    public USCrimeClass(int year) {
        this.year = year;
    }

    public float getMurderRate() {
        return murderRate;
    }

    public void setMurderRate(float murderRate) {
        this.murderRate = murderRate;
    }

    public float getRobberyRate() {
        return robberyRate;
    }

    /***
     *
     * @param robberyRate
     */
    public void setRobberyRate(float robberyRate) {
        this.robberyRate = robberyRate;
    }



    public int getPopulation() {
        return popGrowth;
    }

    public void setPopulation(int popGrowth) {
        this.popGrowth = popGrowth;
    }



    public int getYear() {
        return year;
    }

}

Attachments:

• 1512994928-FinalProject.pdf