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Java Basics: Designing Classes and Using Interfaces (Chapter 13)

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Java Basics: Designing Classes and Using Interfaces (Chapter 13)

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Questions and Answers

What is the purpose of designing abstract classes?

To provide a blueprint for other classes to extend (correct)

To have concrete implementations for all methods

To limit the creation of instances of the class

To restrict access to certain methods

Which interface in Java enables objects to implement natural ordering?

Serializable

Comparable (correct)

Clonable

Comparator

What is the primary role of the Cloneable interface in Java?

To define common methods for handling exceptions

To provide a method for cloning arrays

To enforce immutability of object fields

To indicate that objects of a class can be cloned (correct)

What distinguishes concrete classes from abstract classes in Java?

Abstract classes cannot be instantiated directly Signup and view all the answers

Which GUI framework is used for developing Graphical User Interfaces in JavaFX?

JavaFX Signup and view all the answers

What is an essential concept of Event-Driven Programming?

Responding to user interactions or system events Signup and view all the answers

What is the correct way to simplify event handling in Java?

Implementing handler classes with anonymous inner classes Signup and view all the answers

Which Java feature is used for creating listeners to process value changes in observable objects?

Lambda expressions Signup and view all the answers

In the context of GUI applications, what is used for handling input like text, passwords, and multi-line text?

TextField, PasswordField, and TextArea Signup and view all the answers

Which Java feature is used for developing interactive applications like a tic-tac-toe game?

Creating user interface controls Signup and view all the answers

What is used for creating various user interface controls in Java?

Label, Button, CheckBox, and RadioButton Signup and view all the answers