Thread: Average of an array! help and explanation much appreciated! :)

public class Apples{
    public static void main (String args[]){
    	int array[]={21,16,86,21,3};
    	int sum=0;
    	int average;
 
    	for(int counter=0;counter<array.length;counter++){
    		sum*=array[counter];
    		average = sum/array.length;
    	}
    	System.out.println("The average of these numbers =" + average);
    	}
   }

Eclipse: Exception in thread "main" java.lang.Error: Unresolved compilation problem:
The local variable average may not have been initialized

at Apples.main(Apples.java:11)

im a beginner and i didnt understand most of the link you embedded, would you mind explaining in a bit more detail please?

public class Apples{
    public static void main (String args[]){
    	int bucky[]={21,16,86,21,3};
    	int sum=0;
    	int average=sum;
 
    	for(int counter=0;counter<bucky.length;counter++){
    		sum+=bucky[counter];
    		average=sum/bucky.length;
 
   }
	System.out.println("The sum of the numbers = " + sum);
	System.out.print(average);
	}
}

i think this is better, correct?

all class variables are initialized in class instatiation phase that mean when object is created class level variables are initialized by their default values but in case of local variable "When you declare any local/block variable, they didn’t get the default values. They must assigned some value before accessing it other wise compiler will throw an error."
and your average is local variable in ur program so you have to initialized it