code1, code2, code3 Which was first, the chicken or the egg? What if every egg got the secret answer to that question imprinted from the chicken that laid it? 1 2 3 4 5 6 7 8 9 | package chicken;
public class Egg {
final Object first;
public Egg(Chicken mom) {
first = mom.first;
}
}
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And if then every chicken got that knowledge from the egg, passing it on from generation to generation. Then we could just ask any chicken! 1 2 3 4 5 6 7 8 9 10 11 12 13 14 | package chicken;
public class Chicken {
final Object first;
public Chicken(Egg egg) {
first = egg.first;
}
public void ask() {
// The goal is to reach this line
System.out.println("First there was the " + first);
}
}
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Now all you need to figure out is how to create the egg to create the chicken to create the egg to create chicken to ask the question.
Here’s a naive attempt that will throw a NullPointerException. Can you edit it to make it work? 1 2 3 4 5 6 7 8 9 | package creator;
import chicken.Chicken;
public class Creator {
public static void main(String[] args) {
new Chicken(null).ask();
}
}
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