Complete Java SE 8 Developer Bootcamp - Overriding Methods

The video tutorial explains method overriding in Java, focusing on how a subclass can change the behavior of an inherited method. It covers the rules for successful overriding, including matching method signatures and accessibility levels. The tutorial also discusses the handling of exceptions in overriding and the limitations of static and private methods. Examples are provided to illustrate these concepts, and the use of the 'super' keyword is explained for accessing superclass methods.

What is the primary purpose of method overriding in object-oriented programming?

• To reduce the number of methods in a class

• To change the functionality of an inherited method

• To create a new method with the same name

• To increase the speed of method execution

Which of the following must be identical for a method to be successfully overridden?

• Method name and access modifier

• Return type and parameters

• Method name and parameters

• Method name and return type

What is the difference between method overriding and method overloading?

• Overriding is for private methods; overloading is for public methods

• Overriding is for static methods; overloading is for instance methods

• Overriding changes parameters; overloading changes functionality

• Overriding changes functionality; overloading changes parameters

What is a covariant return type in method overriding?

• A return type that is a superclass of the original

• A return type that is a subclass of the original

• A return type that is identical to the original

• A return type that is unrelated to the original

Why can't an overriding method be less accessible than the inherited method?

• It would violate encapsulation principles

• It would cause a compilation error

• It would make the method inaccessible

• It would lead to runtime exceptions

Which methods cannot be overridden in Java?

• Public and protected methods

• Synchronized and volatile methods

• Static and private methods

• Final and abstract methods

What does the 'super' keyword do in the context of method overriding?

• Calls a method from an unrelated class

• Calls a method from the current class

• Calls a method from the superclass

• Calls a method from a subclass