You will implement a Implementation

Overview of Files DO NOT edit ANY class besides StopAndFrisk java

For all of these, look at the comments above the methods for more information.

readFile$()$

Remember that you must call readFile every time you test a new CSV file, before calling any other meth

Use the Stdll library to read from a file:

To read one record do: string$[]$ recordentries $=$ stdin. readline$()).$split$(","),$

int year $=$ recordEntries$[0]$;

String description $=$ recordEntries$[2$ String gender $=$ recordEntries$[52]$

String race $=$ recordEntries$[66]$;

String location $=$ recordEntries$[7]$;

Boolean arrested $=$ recordEntries$[13].$equals $("$Y$")$;

This method outputs the per year. To complete this method:

To complete this method: $1.$ Create two counters, one for the population frisked and the other for the population arrested. $2.$ Access the specifi year you are loking for in the database array. $3.$ Traversethe records in that year updating the counters. $1.$ Utilize gettris

$=$

Create counte black men wh women who $1.$ Utilize th $1.$ If $2.$ If th

Return the $2D$ resulting array

Note $1$: We are loo male percentage. Note $2.$ The total

Note $2$: The total percentages should not be above $100\%$

crimelncrease This method returns a double value representing the percentage of crime increase $($if the number is positive$)$ or crime decrease $($if the number is negative between any $2$ years. The parameters tor thingethod are the descripition of the record year $1,$

$\text{'}.\text{'}$In the real world context $-$ We always want a decrease in crime as the years progress. See if that's the case or not!

Notes:

Make su $.$ year. Consider

Consider edge cases: yearl cannot be greater than or equal to year

mostCommonBorough This method outputs the NYC borough where the most amount of stops occurred in a given year. This method will analyze the five following boroughs in New York City: Brooklyn, Manhattan, Bronx, Queens, and Staten Island.

This is my code:

import java.util.ArrayList;

$/**$

$*$ The StopAndFrisk class represents stop$-$and$-$frisk data, provided by

$*$ the New York Police Department $($NYPD$),$ that is used to compare

$*$ during when the policy was put in place and after the policy ended.

$*$

$*$ @author Tanvi Yamarthy

$*$ @author Vidushi Jindal

$*/$

public class StopAndFrisk $\{$

$/*$

$*$ The ArrayList keeps track of years that are loaded from CSV data file.

$*$ Each SFYear corresponds to $1$ year of SFRecords.

$*$ Each SFRecord corresponds to one stop and frisk occurrence.

$*/$

private ArrayList database;

$/*$

$*$ Constructor creates and initializes the @database array

$*$

$*$ DO NOT update nor remove this constructor

$*/$

public StopAndFrisk $()\{$

database $=$ new ArrayList;

$\}$

$/*$

$*$ Getter method for the database.

$****$ DO NOT REMOVE nor update this method $****$

$*/$

public ArrayList getDatabase$()\{$

return database;

$\}$

$/**$

$*$ This method reads the records information from an input csv file and populates

$*$ the database.

$*$

$*$ Each stop and frisk record is a line in the input csv file.

$*$

$*1.$ Open file utilizing StdIn.setFile$($csvFile$)$

$*2.$ While the input still contains lines:

$*-$ Read a record line $($see assignment description on how to do this$)$

$*-$ Create an object of type SFRecord containing the record information

$*-$ If the record's year has already is present in the database:

$*-$ Add the SFRecord to the year's records

$*-$ If the record's year is not present in the database:

$*-$ Create a new SFYear

$*-$ Add the SFRecord to the new SFYear

$*-$ Add the new SFYear to the database ArrayList

$*$

$*$ @param csvFile

$*/$

public void readFile $($ String csvFile $)\{$

$//$ DO NOT remove these two lines

StdIn.setFile$($csvFile$)$; $//$ Opens the file

StdIn.readLine$()$; $//$ Reads and discards the header line

$//$ WRITE YOUR CODE HERE

String$[]$ allLines $=$ StdIn.readAllLines$()$;

int len $=$ allLines.length;

for $($int i $=0$; i $$ len; i$++)\{$

String$[]$ recordEntries $=$ allLines$[$i$].$split$(",")$;

int year $=$ Integer.parseInt$($recordEntries$[0])$;

String description $=$ recordEntries$[2]$;

String gender $=$ recordEntries$[52]$;

String race $=$ recordEntries$[66]$;

String location $=$ recordEntries$[71]$;

Boolean arrested $=$ recordEntries$[13].$equals$("$Y$")$;

Boolean frisked $=$ recordEntries$[16].$equals$("$Y$")$;

SFRecord record $=$ new SFRecord$($description$,$ arrested, frisked, gender, race, location$)$;

boolean targetYearFound $=$ false;