package fr.packageviewer; public class Pair { private K first; private V second; public Pair() { } public Pair(K first, V second) { this.first = first; this.second = second; } public K getFirst() { return first; } public void setFirst(K first) { this.first = first; } public V getSecond() { return second; } public void setSecond(V second) { this.second = second; } @Override public String toString() { return "Pair{key=%s,value=%s}".formatted(first, second); } }