Scanner to read double numbers from keyboard and display their average.

It uses scanner to read double numbers from keyboard and display their average. It is assumed that input is terminated by the string “done”.


import  java.util.*;

class AvgNums{

public static void main (String a[]){

Scanner conin = new  Scanner (System.in);

int count =0;

double sum=0.0;

System.out.println("Enter Numbers:: ");

// Read and Sum numbers

while (conin.hasNext() ) {

if(conin.hasNextDouble () ) {

sum += conin.nextDouble();

count++;

}

else {

String str = conin.next();

if(string.equals ("done")) break;

else {

System.out.println("ERROR");

return;

}

}

}

System.out.println("Average is  "+ sum/ count);

}

}
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