java 使用自定义元组

二元组

class Tuple<A, B> {
public final A _1;
public final B _2;

public Tuple(A a, B b) {
this._1 = a;
this._2 = b;
}
}

三元组

class Tuple3<A, B, C> extends Tuple<A, B>{
public final C _3;

public Tuple3(A a, B b, C c) {
super(a, b);
this._3 = c;
}
}

N元组