The following question looks at references to objects and th

The following question looks at references to objects and their superclasses. Indicate whether or not the indicated statement is a LEGAL statement (\"will it compile?\"). If it is legal, then give the output generated by that statement and why.

public class RefTest
{
   public static void main(String [] args)
   {
      Vegetable vege = new Vegetable();
      vege.color();    // LEGAL?
   }
}

class Vegetable
{
   public void color()
   {
      System.out.println(\"in vegetable\");
   }

   public void sweet()
   {
      System.out.println(\"sweet\");
   }
}

class Carrot extends Vegetable
{
   public void color()
   {
      System.out.println(\"in carrot\");
   }

   public void root()
   {
      System.out.println(\"root\");
   }
}

Question options:

1)

ILLEGAL - will not compile

2)

LEGAL - output is \"in vegetable\"

New

3)

LEGAL - output is \"sweet\"

4)

LEGAL - output is \"in carrot\"

5)

LEGAL - output is \"root\"

Solution

answer is

2)

LEGAL - output is \"in vegetable\"

Why?

Vegetable vege = new Vegetable();
vege.color(); // LEGAL

as you can see ... vege is object refers to Vegetable class

Vegetable class has color() and sweet() methods

so vege.color(); call color() in Vegetable class.

Output is

in vegetable