package jrummikub.util; import java.io.Serializable; /** * A pair of objects * * @param * Type of first component * @param * Type of second component */ public class Pair implements Serializable { private static final long serialVersionUID = 9197464436906172698L; private final T1 first; private final T2 second; /** * Create a new pair from two values * * @param first * the first pair component * @param second * the second pair component */ public Pair(T1 first, T2 second) { this.first = first; this.second = second; } /** * Extract the first component of a pair * * @return the first pair component */ public T1 getFirst() { return first; } /** * Extract the second component of a pair * * @return the second pair component */ public T2 getSecond() { return second; } @Override public String toString() { return "Pair [first=" + first + ", second=" + second + "]"; } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((first == null) ? 0 : first.hashCode()); result = prime * result + ((second == null) ? 0 : second.hashCode()); return result; } @SuppressWarnings("unchecked") @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; Pair other = (Pair) obj; if (first == null) { if (other.first != null) return false; } else if (!first.equals(other.first)) return false; if (second == null) { if (other.second != null) return false; } else if (!second.equals(other.second)) return false; return true; } }