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Java ArrayList Average Of All Elements

Submitted by Ragi Patel on Thu, 11/11/2010 - 15:26

Calculate average of all elements of an ArrayList

//Java ArrayList Average Of All Elements
 
import java.util.ArrayList;
 
public class AverageArrayListElements {
    
    public static void main(String args[]){
       
        //create new ArrayList
        ArrayList<String> aListNumbers = new ArrayList<String>();
        aListNumbers.add("1");
        aListNumbers.add("2");
        aListNumbers.add("3");
       
        //Java ArrayList Average of All Elements
       
        int sum = 0;
        for(int i=0; i < aListNumbers.size(); i++){
            sum = sum + Integer.parseInt(aListNumbers.get(i));
        }
       
        //calculate average of all elements
        int average = sum / aListNumbers.size();
       
        System.out.println("Average of all elements of ArrayList is " + average);
    }
}