Object oriented java sample exam

Question

public class Bird
{
  private static int id = 0;
  private String kind;

  public Bird(String requiredKind)
  {
    id = id + 1;
    kind = requiredKind;
  }

  public S         


        

Answer 1

because we are calling toString in the end. When toString takes value of id to return its always 2. Better to print references one by one .