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BJP4 Exercise 5.12: printAverage

Language/Type: Java input method basics Scanner while loops
Author: Marty Stepp (on 2016/09/08)

Write a method named printAverage that accepts a Scanner for the console as a parameter and repeatedly prompts the user for numbers. Once any number less than zero is typed, the average of all non-negative numbers typed is displayed. Display the average as a double, and do not round it. For example, a call to your method might look like this: 

Scanner console = new Scanner(System.in);
printAverage(console);

The following is one example log of execution for your method: 

Type a number: 7
Type a number: 4
Type a number: 16
Type a number: -4
Average was 9.0

If the first number typed is negative, do not print an average. For example: 

Type a number: -2
Type your solution here:


This is a method problem. Write a Java method as described. Do not write a complete program or class; just the method(s) above.

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