Question

Fred wants to analyze his spending habits of the past few years and has gathered information on the checks he has written from 2014 – 2018. The data is in a file in the form YYYY XXXXXX.XX where YYYY represents the year and XXXXXX.XX represents the dollar amount of the check. Because it took a while to gather the information, the data is not in year order. See the Input Data at the end of the assignment. After reading in the data, he wants to print a report by year of the number of checks written, the total amount spent and the average amount of the check. Also, an overall total of the five years appears after the individual data of each year.
Using one array to store the running total of the check amounts by year, an array to hold the number of checks written by year write the Java code to read and store the data and then do the necessary computations to produce a report in the format below. Use printf to display the dollar amounts with two decimal places and right adjust all output. You can set an int variable baseYear to 2014 and subtract it from the actual year to get the correct subscript in each array.

Sample report
Year # Checks Total Spent Average Check
2014 25 3452.23 198.02
. . . .
. . . .
. . . .
2018 33 1097.87 125.67
Overall Total 254 15478.98 167.65

The numbers appearing in the sample report above are not related to the actual input data to follow.
Input Data

2017 876.20
2014 345.67
2014 100.00
2016 345.89
2017 45.34
2015 89.23
2016 1000.00
2017 239.09
2018 67.89
2018 198.00
2015 145.45
2018 180.00
2015 505.23
2014 78.65
2014 42.98
2014 370.00

Answer 1

Answer:

See explaination

Explanation:

import java.io.File;

import java.io.FileNotFoundException;

import java.util.Scanner;

public class SpendAnalysis {

// year 2014 data will be at index 0

// year 2015 data will be at index 1

// year 2016 data will be at index 2

// year 2017 data will be at index 3

// year 2018 data will be at index 4

private static int[] checkIssued={0,0,0,0,0}; // will store the count of check for the year

private static double[] totalAmount={0,0,0,0,0}; // will store the total amount spent for that year

private static final int BASE_YEAR=2014; // base year

// need to update the below line so that it points to the input text file need to be read

private static final String INPUT_FILE="D:\\spent.txt";

public static void main(String[] args) {

// first read all the data from the input file and populate the array

try {

populateData();

} catch (FileNotFoundException e) {

System.out.println(INPUT_FILE+" could not read. Program will terminate now.");

System.exit(1);

}

// second print the data in the console

reportSpending();

}

// read data from input file and update the two arrays

public static void populateData() throws FileNotFoundException {

Scanner fileInput = new Scanner(new File(INPUT_FILE));

while(fileInput.hasNext()){

String[] lineTokens = fileInput.nextLine().split("\\s+");

if(lineTokens.length==2){

int year = Integer.parseInt(lineTokens[0].trim());

double amount = Double.parseDouble(lineTokens[1].trim());

checkIssued[year-BASE_YEAR]+=1;

totalAmount[year-BASE_YEAR]+=amount;

}

}

}

// print the report in the console

public static void reportSpending(){

System.out.println(String.format("%-13s%-15s%-15s%-15s","Year","# Checks","Total Spent","Average Check"));

System.out.println(String.format("%-15d%-15d$%-15.2f$%-15.2f",2014,checkIssued[0],totalAmount[0],totalAmount[0]/checkIssued[0]));

System.out.println(String.format("%-15d%-15d$%-15.2f$%-15.2f",2015,checkIssued[1],totalAmount[1],totalAmount[1]/checkIssued[1]));

System.out.println(String.format("%-15d%-15d$%-15.2f$%-15.2f",2016,checkIssued[2],totalAmount[2],totalAmount[2]/checkIssued[2]));

System.out.println(String.format("%-15d%-15d$%-15.2f$%-15.2f",2017,checkIssued[3],totalAmount[3],totalAmount[3]/checkIssued[3]));

System.out.println(String.format("%-15d%-15d$%-15.2f$%-15.2f",2018,checkIssued[4],totalAmount[4],totalAmount[4]/checkIssued[4]));

int totalChecks = checkIssued[0]+checkIssued[1]+checkIssued[2]+checkIssued[3]+checkIssued[4];

double totalSpent = totalAmount[0]+totalAmount[1]+totalAmount[2]+totalAmount[3]+totalAmount[4];

System.out.println(String.format("%-15s%-15d$%-15.2f$%-15.2f","Overall Total",totalChecks,totalSpent,totalSpent/totalChecks));

}

}