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STEP BY STEP HELP. how do i get this to run from command prompt. i am having trouble understanding how to compile and run. import java.
STEP BY STEP HELP. how do i get this to run from command prompt. i am having trouble understanding how to compile and run. if possible can attach screenshots please
Im very lost.
import java.io.FileReader;
import java.io.BufferedReader;
import java.util.Scanner;
import java.io.IOException;
import java.util.ArrayList;
/**
* Test Class
*/
public class TestUSCrime {
private static long startTime;
private static long endTime;
private static Scanner scan;
private static ArrayList<USCrime> readFile(String fileName) {
String line = "";
String[] fileData;
ArrayList<USCrime> crimeDataList = new ArrayList<>();
try (BufferedReader br = new BufferedReader(new FileReader(fileName))) {
line = br.readLine();
while ((line = br.readLine()) != null) {
fileData = line.split(",");
USCrime usCrime = new USCrime(fileData);
crimeDataList.add(usCrime);
}
return crimeDataList;
} catch (IOException e) {
System.out.println("Exception occurred.");
return null;
}
}
private static long getElapsedTime() {
return (endTime - startTime) / 1000;
}
private static void displayMenu() {
System.out.println("********** Welcome to the USCrime Statistical Application **************************n");
System.out.println("Enter the number of the question you want answered. Enter 'Q' to quit the program :n");
System.out.println(
"1. What were the percentages in population growth for each consecutive year from 1994 - 2013?");
System.out.println("2. What year was the Murder rate the highest?");
System.out.println("3. What year was the Murder rate the lowest?");
System.out.println("4. What year was the Robbery rate the highest?");
System.out.println("5. What year was the Robbery rate the lowest?");
System.out.println("6. What was the total percentage change in Motor Vehicle Theft between 1998 and 2012?");
System.out.println("7. What year was the Burglary rate the highest?");
System.out.println("8. What year was the Burglary rate the lowest?");
System.out.println("Q. Quit the program");
System.out.print("nEnter your selection: ");
}
/**
* main method
*/
public static void main(String[] args) {
String entry = "";
scan = new Scanner(System.in);
startTime = System.currentTimeMillis();
if (args.length == 0) {
System.out.println("Invalid Argument!");
return;
}
USCrimeData objUSCrimeData = new USCrimeData(readFile(args[0]));
while (!entry.equalsIgnoreCase("Q")) {
displayMenu();
entry = scan.nextLine();
if (!entry.equalsIgnoreCase("Q")) {
switch (entry) {
case "1":
objUSCrimeData.printPopulationGrowth();
break;
case "2":
System.out.println(
"nThe Murder rate was highest in " + objUSCrimeData.HighestMurderRateYear() + "n");
break;
case "3":
System.out.println(
"nThe Murder rate was lowest in " + objUSCrimeData.LowestMurderRateYear() + "n");
break;
case "4":
System.out.println(
"nThe Robbery rate was highest in " + objUSCrimeData.HighestRobberyRateYear() + "n");
break;
case "5":
System.out.println(
"nThe Robbery rate was lowest in " + objUSCrimeData.LowestRobberyRateYear() + "n");
break;
case "6":
System.out.println("nThe total percentage change in Motor Vehicle Theft between 1998 and 2012 was "
+ String.format("%.2f", objUSCrimeData.MotorVehicleTheftPercentChange()) + " %n");
break;
case "7":
System.out.println(
"nThe Burglary rate was highest in " + objUSCrimeData.HighestBurglaryRateYear() + "n");
break;
case "8":
System.out.println("nThe Burglary Rate was lowest in "
+ objUSCrimeData.LowestBurglaryRateYear() + "n");
break;
default:
System.out.println("nInvalid choice. Please Try Again!n");
break;
}
} else {
endTime = System.currentTimeMillis();
System.out.println("nThank you for trying the US Crimes Statistics Program.");
System.out.println("nElapsed time in seconds was: " + getElapsedTime());
}
}
}
}
/**
* USCrime Class
*/
public class USCrime {
int year;
double violentCrimeRate;
long murder;
double murderRate;
double burglaryRate;
long larcenyTheft;
long violentCrime;
long robbery;
double robberyRate;
long rape;
long aggravatedAssault;
double larcenyTheftRate;
long motorVehicleTheft;
long propertyCrime;
double propertyCrimeRate;
long burglary;
double rapeRate;
long population;
double aggravatedAssaultRate;
double motorVehicleTheftRate;
// constructor
public USCrime(String[] crimeData) {
year = Integer.parseInt(crimeData[0]);
population = Long.parseLong(crimeData[1]);
violentCrime = Long.parseLong(crimeData[2]);
violentCrimeRate = Double.parseDouble(crimeData[3]);
murder = Long.parseLong(crimeData[4]);
murderRate = Double.parseDouble(crimeData[5]);
rape = Long.parseLong(crimeData[6]);
rapeRate = Double.parseDouble(crimeData[7]);
robbery = Long.parseLong(crimeData[8]);
robberyRate = Double.parseDouble(crimeData[9]);
aggravatedAssault = Long.parseLong(crimeData[10]);
aggravatedAssaultRate = Double.parseDouble(crimeData[11]);
propertyCrime = Long.parseLong(crimeData[12]);
propertyCrimeRate = Double.parseDouble(crimeData[13]);
burglary = Long.parseLong(crimeData[14]);
burglaryRate = Double.parseDouble(crimeData[15]);
larcenyTheft = Long.parseLong(crimeData[16]);
larcenyTheftRate = Double.parseDouble(crimeData[17]);
motorVehicleTheft = Long.parseLong(crimeData[18]);
motorVehicleTheftRate = Double.parseDouble(crimeData[19]);
}
public int getYear() {
return year;
}
public void setYear(int year) {
this.year = year;
}
public double getViolentCrimeRate() {
return violentCrimeRate;
}
public void setViolentCrimeRate(double violentCrimeRate) {
this.violentCrimeRate = violentCrimeRate;
}
public long getMurder() {
return murder;
}
public void setMurder(long murder) {
this.murder = murder;
}
public double getMurderRate() {
return murderRate;
}
public void setMurderRate(double murderRate) {
this.murderRate = murderRate;
}
public double getBurglaryRate() {
return burglaryRate;
}
public void setBurglaryRate(double burglaryRate) {
this.burglaryRate = burglaryRate;
}
public long getLarcenyTheft() {
return larcenyTheft;
}
public void setLarcenyTheft(long larcenyTheft) {
this.larcenyTheft = larcenyTheft;
}
public long getViolentCrime() {
return violentCrime;
}
public void setViolentCrime(long violentCrime) {
this.violentCrime = violentCrime;
}
public long getRobbery() {
return robbery;
}
public void setRobbery(long robbery) {
this.robbery = robbery;
}
public double getRobberyRate() {
return robberyRate;
}
public void setRobberyRate(double robberyRate) {
this.robberyRate = robberyRate;
}
public long getRape() {
return rape;
}
public void setRape(long rape) {
this.rape = rape;
}
public long getAggravatedAssault() {
return aggravatedAssault;
}
public void setAggravatedAssault(long aggravatedAssault) {
this.aggravatedAssault = aggravatedAssault;
}
public double getLarcenyTheftRate() {
return larcenyTheftRate;
}
public void setLarcenyTheftRate(double larcenyTheftRate) {
this.larcenyTheftRate = larcenyTheftRate;
}
public long getMotorVehicleTheft() {
return motorVehicleTheft;
}
public void setMotorVehicleTheft(long motorVehicleTheft) {
this.motorVehicleTheft = motorVehicleTheft;
}
public long getPropertyCrime() {
return propertyCrime;
}
public void setPropertyCrime(long propertyCrime) {
this.propertyCrime = propertyCrime;
}
public double getPropertyCrimeRate() {
return propertyCrimeRate;
}
public void setPropertyCrimeRate(double propertyCrimeRate) {
this.propertyCrimeRate = propertyCrimeRate;
}
public long getBurglary() {
return burglary;
}
public void setBurglary(long burglary) {
this.burglary = burglary;
}
public double getRapeRate() {
return rapeRate;
}
public void setRapeRate(double rapeRate) {
this.rapeRate = rapeRate;
}
public long getPopulation() {
return population;
}
public void setPopulation(long population) {
this.population = population;
}
public double getAggravatedAssaultRate() {
return aggravatedAssaultRate;
}
public void setAggravatedAssaultRate(double aggravatedAssaultRate) {
this.aggravatedAssaultRate = aggravatedAssaultRate;
}
public double getMotorVehicleTheftRate() {
return motorVehicleTheftRate;
}
public void setMotorVehicleTheftRate(double motorVehicleTheftRate) {
this.motorVehicleTheftRate = motorVehicleTheftRate;
}
}
import java.util.ArrayList;
public class USCrimeData {
ArrayList<USCrime> crimesList;
public USCrimeData(ArrayList<USCrime> crimesList) {
this.crimesList = crimesList;
}
private USCrime getCrimeByYear(int year) {
for (USCrime usCrime : crimesList) {
if (usCrime.getYear() == year) {
return usCrime;
}
}
return null;
}
public int LowestMurderRateYear() {
double lowestRate = crimesList.get(0).getMurder();
int lowestRateYear = crimesList.get(0).getYear();
double currentRate = 0;
for (int i = 1; i < crimesList.size(); i++) {
currentRate = crimesList.get(i).getMurder();
if (currentRate < lowestRate) {
lowestRate = currentRate;
lowestRateYear = crimesList.get(i).getYear();
}
}
return lowestRateYear;
}
public int HighestRobberyRateYear() {
double highestRate = crimesList.get(0).getRobberyRate();
int highestRateYear = crimesList.get(0).getYear();
double currentRate = 0;
for (int i = 1; i < crimesList.size(); i++) {
currentRate = crimesList.get(i).getRobberyRate();
if (currentRate > highestRate) {
highestRate = currentRate;
highestRateYear = crimesList.get(i).getYear();
}
}
return highestRateYear;
}
public int LowestRobberyRateYear() {
double lowestRate = crimesList.get(0).getRobberyRate();
int lowestRateYear = crimesList.get(0).getYear();
double currentRate = 0;
for (int i = 1; i < crimesList.size(); i++) {
currentRate = crimesList.get(i).getRobberyRate();
if (currentRate < lowestRate) {
lowestRate = currentRate;
lowestRateYear = crimesList.get(i).getYear();
}
}
return lowestRateYear;
}
public int HighestMurderRateYear() {
double highestRate = crimesList.get(0).getMurder();
int highestRateYear = crimesList.get(0).getYear();
double currentRate = 0;
for (int i = 1; i < crimesList.size(); i++) {
currentRate = crimesList.get(i).getMurder();
if (currentRate > highestRate) {
highestRate = currentRate;
highestRateYear = crimesList.get(i).getYear();
}
}
return highestRateYear;
}
public double MotorVehicleTheftPercentChange() {
USCrime crimeFrom = getCrimeByYear(1998);
USCrime crimeTo = getCrimeByYear(2012);
if (crimeFrom != null && crimeTo != null) {
long yearFromVehicleTheft = crimeFrom.getMotorVehicleTheft();
long yearToVehicleTheft = crimeTo.getMotorVehicleTheft();
double percentChange = ((double) Math.abs(yearToVehicleTheft - yearFromVehicleTheft) / yearFromVehicleTheft)
* 100;
return percentChange;
}
return 0;
}
public int HighestBurglaryRateYear() {
double highestRate = crimesList.get(0).getBurglaryRate();
int highestRateYear = crimesList.get(0).getYear();
double currentRate = 0;
for (int i = 1; i < crimesList.size(); i++) {
currentRate = crimesList.get(i).getBurglaryRate();
if (currentRate > highestRate) {
highestRate = currentRate;
highestRateYear = crimesList.get(i).getYear();
}
}
return highestRateYear;
}
public int LowestBurglaryRateYear() {
double lowestRate = crimesList.get(0).getBurglaryRate();
int lowestRateYear = crimesList.get(0).getYear();
double currentRate = 0;
for (int i = 1; i < crimesList.size(); i++) {
currentRate = crimesList.get(i).getBurglaryRate();
if (currentRate < lowestRate) {
lowestRate = currentRate;
lowestRateYear = crimesList.get(i).getYear();
}
}
return lowestRateYear;
}
public void printPopulationGrowth() {
System.out.println("nYeartGrowth Percentagen1994t 0%");
double growthPercent = 0;
long currentPopulation;
long previousPopulation;
for (int i = 1; i < crimesList.size(); i++) {
currentPopulation = crimesList.get(i).getPopulation();
previousPopulation = crimesList.get(i - 1).getPopulation();
growthPercent = ((double) (currentPopulation - previousPopulation) / previousPopulation) * 100;
System.out.println(crimesList.get(i).getYear() + "t" + String.format("%.2f", growthPercent) + " %");
}
System.out.println("");
}
}
