Write a JAVA program to read a list of nonnegative integers and to display the largest integer, the smallest integer and the average of all the integers. The user indicates the end of the input by entering a negative sentinel value that is not used in finding the largest, smallest and average values. The average should be a value of type double so that it is computed a fractional part.

* Java program free from syntax, logic and run time errors

* Code optimisation: no unnecessary assignment of variables and calculations

* (one of them has 0 input). Descriptive block and inline comments included.