Can't get correct average using array

[nevets93]

my dat file just says this:
231
523
893
254
927
368
189

Everything else looks good but the average is obviously wrong. currently my output file says this:
Numbers in list:
231
523
893
254
927
368
189
Number count: 7
average: 67
largest numbers is: 927
2nd largest numbers is: 893
3rd largest numbers is: 523


Here is my code:

// prog04.java

import java.io.*;

class Numlistclass
{
final int MAXCOUNT = 50;
private int count;
private int sum;
private int average;
private int largest_1;
private int largest_2;
private int largest_3;
private int[] nums = new int[MAXCOUNT];

public Numlistclass()
{
int i;

count = 0;
for (i = 0; i < MAXCOUNT; i++) nums[i] = 0;
} // Numlistclass
public void addnum(int num)
{
if (count == MAXCOUNT)
System.out.println("List is full -- unable to store: "+num);
else
nums[count++] = num;
} // addnum
public void printnums(PrintWriter pw)
{
int i;

pw.println("Numbers in list:");
for (i = 0; i < count; i++) pw.println(nums[i]);
} // printnums
public void printcount(PrintWriter pw)
{
pw.println("Number count: "+count);
} // printcount
public void printaverage (PrintWriter pw)
{
for(int i = 0; i < nums.length; i++)
sum = sum + nums[i];

average = sum /nums.length;

pw.println("average: "+average);
}
public void topthree(PrintWriter pw)
{
int i;

for (i = 0; i < count; i++)
{
if (nums[i]>largest_3 && nums[i]<largest_2)
{
largest_3=nums[i];
}
else if(nums[i]>largest_2 && nums[i]<largest_1)
{
largest_3=largest_2;
largest_2=nums[i];
}
else if(nums[i] > largest_1)
{
largest_3=largest_2;
largest_2=largest_1;
largest_1=nums[i];
}
}//for
pw.println("largest numbers is: "+largest_1);
pw.println("2nd largest numbers is: "+largest_2);
pw.println("3rd largest numbers is: "+largest_3);
} // topthree
} // class Numlistclass

public class prog04
{
public static void main(String args[]) throws IOException
{
int num;
String line;
Numlistclass numlist = new Numlistclass();
BufferedReader br = new BufferedReader(new FileReader("prog04.dat"));
PrintWriter pw = new PrintWriter(new FileWriter("prog04.out"));

// store numbers in list
while ((line = br.readLine()) != null)
{
num = Integer.parseInt(line);// convert line to numeric value
numlist.addnum(num);
}

// write output
numlist.printnums(pw);
numlist.printcount(pw);
numlist.printaverage(pw);
numlist.topthree(pw);


// finalize
br.close();
pw.close();
}
} // class prog04

[JosAH]

You have only 7 numbers in your array but you're dividing the sum by the length of the array (50).

kind regards,

Jos

[nevets93]

wow, i was being dumb! thanks bro!