Varied amount of input data Java / How to Tutorial

Varied amount of input data
Statistics are often calculated with varying amounts of input data. Write a program that takes any number of non-negative integers as input, and outputs the max and average. A negative integer ends the input and is not included in the statistics. Assume the input contains at least one non-negative integer.
Output the average with two digits after the decimal point followed by a newline, which can be achieved as follows:
Ex: When the input is:
15 20 0 3 -1
the output is:
20 9.50

public class LabProgram {
public static void main(String[] args) {
int count=0;
int max =0 ;
double total =0;

while(num=0){
count++;
total+=num;


}

double avg = total/count;
}
}
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