Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Image one is my file.
image 2 is the program I wrote
base on my program I want to write a method 3:
A method to compute the mean (average) of the data in an array
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takes one parameter, an array of integers
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returns the mean (average) of the data in the parameter array
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![1 import java.util.*;
2 import java.io.*;
3 public class FunWithHistograms {
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public static void main(String[] args) throws FileNotFoundException {
printIntro();//method 1
Scanner console = new Scanner (System.in);
System.out.print("input file name? ");
String fileName = console.nextLine();
Scanner inFile = new Scanner (new File(fileName));
int[] data = readData(inFile);//method 2
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13 }
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22 public static int[] readData(Scanner inFile) { //method 2
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int numVals = inFile.nextInt ();
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int[] data = new int[numVals];
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34 }
public static void printIntro() {
System.out.println("The program will analyze data from a dataset of");
System.out.println("non-negative
integer values. It will produce a");
System.out.println("histogram of the data and output some statistics.");
System.out.println();
for (int i = 0; i < numVals; i++) {
data[i] = inFile.nextInt ();
}
return data;
//write method 3 plz.
/home/FunWithHistograms.java 32:26 Spaces: 4 (Auto)](https://content.bartleby.com/qna-images/question/6c680976-d041-43f6-b2b7-59630778639d/7dac6557-963e-43df-8964-7ea710d402be/72v7dzm_processed.png)
Transcribed Image Text:1 import java.util.*;
2 import java.io.*;
3 public class FunWithHistograms {
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public static void main(String[] args) throws FileNotFoundException {
printIntro();//method 1
Scanner console = new Scanner (System.in);
System.out.print("input file name? ");
String fileName = console.nextLine();
Scanner inFile = new Scanner (new File(fileName));
int[] data = readData(inFile);//method 2
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13 }
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22 public static int[] readData(Scanner inFile) { //method 2
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int numVals = inFile.nextInt ();
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int[] data = new int[numVals];
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34 }
public static void printIntro() {
System.out.println("The program will analyze data from a dataset of");
System.out.println("non-negative
integer values. It will produce a");
System.out.println("histogram of the data and output some statistics.");
System.out.println();
for (int i = 0; i < numVals; i++) {
data[i] = inFile.nextInt ();
}
return data;
//write method 3 plz.
/home/FunWithHistograms.java 32:26 Spaces: 4 (Auto)
Transcribed Image Text:world_cup_goals_20...
seattle_average_te...
1 29//totol value in this file.
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pril 2019.txt 1:1 Spaces: 4 (Auto)
disneyland_rati... X
FunWith Histograms...
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Thank you, but in this case, what number should "n" be?
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