Storing number pairs in java

Question

How do I store a set of paired numbers in java? Do I use lists or arrays or maybe something else?

eg. [ (1,1) , (2,1) , (3,5)]

Answer 1

class Pair {
    T p1, p2;
    Pair(T p1, T p2) {
        this.p1 = p1;
        this.p2 = p2;
    }

Pair pair = new Pair(1,2);

int i1 = pair.p1;
int i2 = pair.p2;

You can also put in getters, setters, equals, hashcode, etc.