org.pepsoft.util.Pair Maven / Gradle / Ivy
package org.pepsoft.util;
/**
* A tuple of two values. Abstract in order to force creation of specific
* semantic subclasses.
*
* Created by Pepijn on 26-2-2017.
*/
public abstract class Pair {
protected Pair(T value1, U value2) {
this.value1 = value1;
this.value2 = value2;
}
protected final T getValue1() {
return value1;
}
protected final U getValue2() {
return value2;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Pair pair = (Pair) o;
if (value1 != null ? !value1.equals(pair.value1) : pair.value1 != null) return false;
return value2 != null ? value2.equals(pair.value2) : pair.value2 == null;
}
@Override
public int hashCode() {
int result = value1 != null ? value1.hashCode() : 0;
result = 31 * result + (value2 != null ? value2.hashCode() : 0);
return result;
}
private final T value1;
private final U value2;
}