What would happen if a subclass calls itself? and which method is called? if the call compiles, which version of the method will be called?

Yoo y1 = new Yoo();

System.out.println(y1);

• Class Zoo doesnt explicitly extend a class (i.e., it doesnt have an extends clause in its class header). Its class members (i.e., its fields and methods) include:

  • an integer field called a
  • a String field called b
  • a non-static method called one() that takes an integer and returns a double
  • a non-static method called two() that takes no inputs and returns an integer
  • its own equals() method that overrides the inherited one.

• Class Woo extends Zoo. In addition to the members that it inherits, it has:

  • integer fields called x and y
  • its own method called two() that overrides the inherited one
  • its own toString() method that overrides the inherited one.

• Class Too extends Zoo. In addition to the members that it inherits, it has:

  • integer fields called t and u
  • its own method called two() that overrides the inherited one
  • its own method called three() that takes a double and returns a boolean
  • an equals() method that overrides the inherited one.

• Class Yoo extends Woo. In addition to the members that it inherits, it has:

  • a String field called y
  • its own method called one() that overrides the inherited one.