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Java Inner Classes

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Questions and Answers

What is a potential advantage of making an inner class private?

It allows the outer class to hide its members from other classes (correct)

It makes the class accessible to all other classes in the program

It makes the inner class inaccessible to the outer class

It increases the memory usage of the program

Why might you not want to create an inner class?

Because it is not a commonly used design pattern

Because it can only be used in the class in which it is defined (correct)

Because it reduces code readability

Because it is not accessible to other classes

What is a characteristic of an inner class in Java?

It cannot be used as a data type

It can only access public members of its outer class

It can access private members of its outer class (correct)

It must be declared outside a method

What is the purpose of using enums in Java?

To make the values type-safe Signup and view all the answers

Why might you want to define a class as a separate file instead of as an inner class?

To make it more accessible to other classes Signup and view all the answers

What is the output of the given Java program?

Price of pizza is 602.00 Signup and view all the answers

What is true about the relationship between an inner class and its outer class?

The inner class can access all members of the outer class Signup and view all the answers

What is a characteristic of a non-static member class in Java?

It requires an instance and has access to all data and methods of the top-level class Signup and view all the answers

What is a common scenario where you might encounter inner classes?

In Java built-in classes Signup and view all the answers

How many types of nested classes are there in Java?

4 Signup and view all the answers

What is the advantage of using enumerations to control a switch structure?

It makes the values type-safe Signup and view all the answers

What is the name of the top-level class in a nested class structure?

Top-level class Signup and view all the answers

What is the primary reason for nesting a class inside another?

To make the connection between classes easier to understand Signup and view all the answers

What is the access modifier of the inner class HouseData?

private Signup and view all the answers

What is the purpose of the display() method in the RealEstateListing class?

To print the details of the real estate listing Signup and view all the answers

What data type is used to store the price of the real estate listing?

double Signup and view all the answers

How many parameters does the constructor of the RealEstateListing class take?

4 Signup and view all the answers

What is the purpose of the HouseData class?

To store the address and area of the house Signup and view all the answers

Java Inner Classes

Choose a study mode

Podcast

Questions and Answers

What is a potential advantage of making an inner class private?

Why might you not want to create an inner class?

What is a characteristic of an inner class in Java?

What is the purpose of using enums in Java?

Why might you want to define a class as a separate file instead of as an inner class?

What is the output of the given Java program?

What is true about the relationship between an inner class and its outer class?

What is a characteristic of a non-static member class in Java?

What is a common scenario where you might encounter inner classes?

How many types of nested classes are there in Java?

What is the advantage of using enumerations to control a switch structure?

What is the name of the top-level class in a nested class structure?

What is the primary reason for nesting a class inside another?

What is the access modifier of the inner class HouseData?

What is the purpose of the display() method in the RealEstateListing class?

What data type is used to store the price of the real estate listing?

How many parameters does the constructor of the RealEstateListing class take?

What is the purpose of the HouseData class?

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