Inheritance in Java

The following Syntax is used for?

class Subclass-name extends Superclass-name

{

//methods and fields

}

• Polymorphism

• Encapsulation

• Inheritance

• None of the above

A class that is inherited is called a ______ .

• superclass

• Subclass

• subsetclass

• Relativeclass

Class Cat extends Animal. Which is NOT a valid declaration?

• Cat x = new Cat();

• Animal X = new Animal();

• Cat x = new Animal();

• Animal x = new Cat();

What does polymorphism mean?

• Changing shapes
• Having many forms
• Being unchangeable
• Easy

Which of these cannot be passed down through inheritance?

• Public variables
• Private variables
• Methods
• Data

In Java, each child class can have only one parent.

• True
• False

When overloading a method, the method header ________ .

• Must exactly match the header of the method you are overloading.

• Must have the same name, but differ in order, number, or type of parameters.

• Can differ in name, but must have the same number and order of parameters.

• Can be completely different from the method you are overloading, but must have @Override.

The process by which objects of one class acquire the properties of objects of another class is known as

• Polymorphism

• Inheritance

• Data Hiding

• Association

An object is an instance of a:

• parameter
• method
• class
• application

A(n) ____________________ method cannot be overridden by a subclass.

• final
• private
• public
• static