why does my compare method throw exception — Comparison method violates its general contract!

Question

Why does this code

public class SponsoredComparator implements Comparator {

    public boolean equals(SRE arg0, SRE arg1){
        return arg0.g         


        

Answer 1

maybe you just have NaN values which you compare through Collections.sort... this has been a problem to me and i got that exception even having right implementation of compare(obj1, obj2) method! Check that!