can someone correct the code so that it works?

//import statements for Random, Scanner and IO import java.util.Random; import java.util.Scanner; import java.io.*;

public class Hobbit { public static void main(String[] args) throws IOException { final int NUM_HOBBITS = 5; final int NUM_COLUMNS = 2; String fileName = "hobbits.csv";

//call populateHobbits( ) to create the two dimensional array double[][] hobbits = populateHobbits(NUM_HOBBITS, NUM_COLUMNS);

//display the number of hobbits System.out.println(hobbits.length + " hobbits accepted Gandalf's invitation to lunch ");

//calculate the means of the columns double[] hobbitMeans = getColMeans(hobbits);

//write hobbits array to file writeHobbits(hobbits, fileName);

//read and display the file that has been read readHobbits(fileName);

//call displayColMeans to display hobbit means displayColMeans(hobbitMeans); }

//method to populate hobbits array with random double values public static double[][] populateHobbits(int numHobbits, int numCols) { final double HT_MULTIPLIER = 10.0; //multiplier for the hobbit height final double WT_MULTIPLIER = 250.0; //multiplier for the hobbit weight

//instantiate Random object Random rand = new Random();

//declare two dim array with numHobbits rows and numCols columns double[][] hobbitArray = new double[numHobbits][numCols];

//assign random double values to all elements for (int i = 0; i

//assign this double to the current array element hobbitArray[i][j] = randDouble;

//determine which multiplier to use if (j == 0) //this is column for height hobbitArray[i][j] *= HT_MULTIPLIER; else // this is column for weight hobbitArray[i][j] *= WT_MULTIPLIER; } } return hobbitArray; //return the two dimensional array }

// Method to write hobbits array to file public static void writeHobbits(double[][] ar, String fileName) throws IOException { // Open the file to write PrintWriter outFile = new PrintWriter(fileName);

// Print column headings of the array of stats outFile.println("HEIGHT,WEIGHT");

for (int i = 0; i

// If at end of a row, add newline char if (j == ar[i].length - 1) outFile.print(" "); else // Add the "," delimiter outFile.print(","); } // End of inner loop } // End of outer loop outFile.close(); // Close the outfile

System.out.println("The file was successfully written "); } // End of method

// Method to read hobbits array from file and display it public static void readHobbits(String fileName) throws IOExcption { //open the file to read File dataFile = new File(fileName); Scanner inFile = new Scanner(dataFile); //variable to conatin the substrings of one line of file String[] oneLine = new String[2]; int counter = 0; //keep track of line number System.out.println("Data read from the " + fileName + " file:"); //method to get random double in range [0.2, 0.4] //parameter is an object of class Random public static double getRandDouble(Random rand) { final double MIN_RAND_DOUBLE = 0.2; final double MAX_RAND_DOUBLE = 0.4; boolean validDouble = false; double randDouble; do { randDouble = rand.nextDouble(); //if num in correct range, flip boolean to true if ( randDouble >= MIN_RAND_DOUBLE && randDouble

//method to determine average values of column dim arrary public static double[] getColMeans(double[][] ar) { //local array to store means //array is sized according to length second dimension of parameter //first element is mean of first column //second element is mean of second column, etc double[] meanAr = new double[ar[0].length]; Arrays.fill(meanAr, 0.0); /ested for loop to iterate through elements in parameter for (int i = 0; i

}

Lab16 Sample output 4 //import statements for Random, Scanner and I0 5 import java.util. Random; 6 import java.util. Scanner; 7 import java.io.*