How to compare that sequence of doubles are all “approximately equal” in Java?

Question

I have a method in java that returns a double number and I want to compare every double number that is returned every time I call the method(say 5 times), so that I can conclude

Answer 1

public static boolean almostEqual(double a, double b, double eps){
    return Math.abs(a-b)

Where eps is measure of equality.