Please add detailed comments above each statement in the following java code.

import java.io.File; import java.io.FileNotFoundException; import java.io.FileWriter; import java.io.IOException; import java.io.PrintWriter; import java.util.Arrays; import java.util.Scanner;

public class ReportPrintDriver { public static void main(String args[] ) throws Exception { TrackData w = new TrackData(); w.readFile(); w.reportArtists(); } } /* * this class represents array structure of data in file in terms of rows and columns */ class TrackData{ int cols; int rows; String[][] data; public TrackData(){ this.cols = 5; this.rows = 10; this.data = new String[rows][cols]; } /* * Read file contents into data array */ public void readFile(){ File text = new File("D:/Chegg/tracks.dat"); Scanner scnr; try { scnr = new Scanner(text); int row =0, col=0; while(scnr.hasNextLine()){ String line = scnr.nextLine(); // System.out.println("" + line); String[] strArr = line.split(","); data[row][col] = strArr[col];col++; data[row][col] = strArr[col];col++; data[row][col] = strArr[col];col++; data[row][col] = strArr[col];col++; data[row][col] = strArr[col];col++; //System.out.println(data[row][2]); col=0;row++; } }catch (FileNotFoundException e) { // TODO Auto-generated catch block System.out.println("students.dat file not found"); }catch (NumberFormatException e) { // TODO Auto-generated catch block System.out.println("students.dat file has wrong data"); } } /* * create two reports * 1. which artists appear how many times * 2. Top streamed artists */ public void reportArtists(){ PrintWriter writer1 =null; PrintWriter writer2 =null; try { writer1 = new PrintWriter(new FileWriter("D:/Chegg/artists.dat")); writer2 = new PrintWriter(new FileWriter("D:/Chegg/TopStramedArtists.dat")); } catch (FileNotFoundException e) { // TODO Auto-generated catch block System.out.println(" file not found"); } catch (IOException e) { // TODO Auto-generated catch block System.out.println(" file is not accesible"); } String[] artistsArr = new String[rows]; int[] count = new int[rows]; int[] streamCount = new int[rows]; int index = 0; int atWhichIndex=-1; for(int i=0;i

class Artist{ String name; Artist next; }

class topStreamingArtists{ private Artist first; }