Computer scienceProgramming languagesJavaCode organizationObject-oriented programmingClass hierarchiesThe base class

Object class

Java Inheritance: Square, Shapes, Objects!

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Consider the following class hierarchy in Java:

class Shape { public void draw() { } }
class Circle extends Shape { }
class Square extends Shape { }

You have just referenced a Square object through the following Java code:

Shape shape = new Square();

Which of the following statements about the relationship of the referenced object to the base 'Object' class in Java are true?

Select one or more options from the list

The 'shape' reference is a 'Object' because every class in Java has Object as a superclass.

The 'shape' reference can call methods that are defined in the Object class, even without any definition in the 'Shape' class or the 'Square' class.

The 'shape' reference cannot access methods of the 'Shape' or 'Object' classes if those methods are not overridden in the 'Square' class.

The 'shape' reference, although referring to a 'Square', can be passed to a method that requires an Object as a parameter.

The 'shape' reference is an instance of the Object class.

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