ArrayList.remove(int) does not return good objects

[lgrignon]

This code should return the removed object, returns an array instead

void setup() {
    ArrayList<Instruction> nums = new ArrayList<Instruction>();
    nums.add(new Instruction(1,2));

    Instruction x = nums.remove(0);
    println(x);   // "Object"
    println(x.from);  // undefined
    println(x.to);
}

class Instruction {
  int from, to;

  Instruction(int f, int t) {
    from = f;
    to = t;
  }
}