Understanding Java's toString Method

What is the initial approach to display book information from the library database?

• Using accessor methods like getAuthor

• Modifying the database structure

• Directly accessing instance variables

• Using the toString method

Why is it tedious to use accessor methods for each attribute of a book?

• Because accessor methods are slow

• Because books do not have attributes

• Because it requires writing more code

• Because it is not allowed in Java

Why can't the Object class's toString method adequately represent all custom objects?

• It does not have access to the custom object's attributes

• It only returns the object's memory address

• It only works with primitive data types

• It is not designed for custom objects

What does overriding a method in Java mean?

• Removing a method from the parent class

• Providing a new version of a method in the child class

• Changing the method's return type

• Calling a method from the parent class

What information does the custom toString method for the Book class return?

• The book's memory address

• The book's title, author, and number of pages

• The book's price and availability

• The book's database ID

What keyword is used to start defining the return value in a toString method?

• print

• return

• start

• public

What must be the same when overriding a method in Java?

• The method's access modifier

• The number of parameters

• The method's body

• The method's name and return type

How does Java determine which toString method to call?

• It checks the child class first before moving up the hierarchy

• It randomly selects a toString method

• It always uses the Object class's toString method

• It requires the programmer to specify the method

What is the result of printing a Book object after overriding its toString method?

• Only the book's title

• Detailed book information

• The object's memory address

• An error message

What advantage does the custom toString method provide?

• It enables direct database manipulation

• It reduces the memory usage of the program

• It allows for printing detailed object information easily

• It increases the execution speed of the program