@@ -0,0 +1,513 @@
+package it.unito.geosummly.utils;%0A%0Apublic class Pair%3CF, S%3E %7B%0A    private F first; //first member of pair%0A    private S second; //second member of pair%0A%0A    public Pair(F first, S second) %7B%0A        this.first = first;%0A        this.second = second;%0A    %7D%0A%0A    public void setFirst(F first) %7B%0A        this.first = first;%0A    %7D%0A%0A    public void setSecond(S second) %7B%0A        this.second = second;%0A    %7D%0A%0A    public F getFirst() %7B%0A        return first;%0A    %7D%0A%0A    public S getSecond() %7B%0A        return second;%0A    %7D%0A%7D%0A

add class to manipulate pais of objects