Mastering Kotlin: A Beginner’s Guide
- Length: 312 pages
- Edition: 1
- Language: English
- Publisher: CRC Press
- Publication Date: 2022-11-22
- ISBN-10: 1032318953
- ISBN-13: 9781032318950
- Sales Rank: #0 (See Top 100 Books)
Mastering Kotlin helps readers quickly understand core concepts and then move on to practical projects using the Kotlin programming language.
Back in the day, Java was the de facto choice for creating Android apps. However, since Google announced Kotlin as the new language of choice for building Android applications, developers haven’t looked back.
Kotlin is a general purpose, statically typed, open source programming language that runs on Java Virtual Machines. It can be called a Java replacement; however, the Kotlin syntax isn’t blindly identical to that of Java. Sure, Kotlin can work with Java, and owing to its intuitiveness, it can also enhance overall productivity and efficiency, but it is not a Java clone.
Kotlin differs from Java in that it has assertive interfaces that help determine variable and expression classes, even if they’re not defined. Kotlin is a beautiful alternative for modifying and identifying faults because it has a familiar and straightforward syntax and programming structure. It comes with a sophisticated compiler that can track automatic casts, allowing verification durations to be more efficient. Kotlin also has simple signals that may be interpreted without any need for set parameters. And Kotlin is easy to set up: all you need is a Kotlin component for Android Studio.
Kotlin developers are in high demand. As a Kotlin developer, you’ll be able to pursue a variety of career routes, spanning fields such as mobile app development, game development, game design, and even software development. Many well-known brands use Kotlin in their software and projects. Naturally, it is a good idea to learn Kotlin, and this is how Mastering Kotlin can be the right manual for you!
With Mastering Kotlin, learning Kotlin becomes an easy task, and learners can use their skills to create innovative Kotlin apps.
The Mastering Computer Science series is edited by Sufyan bin Uzayr, a writer and educator with over a decade of experience in the computing field.
Cover Half Title Series Page Title Page Copyright Page Contents Preface About the Author CHAPTER 1: Getting Started HISTORY OF KOTLIN FEATURES OF KOTLIN KOTLIN’S KEY CHARACTERISTICS HOW KOTLIN MULTIPLATFORM FUNCTIONS KOTLIN’S ARCHITECTURE KOTLIN VS. JAVA KOTLIN MULTIPLATFORM IN MOBILE Begin with Kotlin Multiplatform Mobile Platforms That Are Supported Kotlin for Server-Side Kotlin Frameworks for Server-Side Development Using Kotlin to Deploy Server-Side Apps Kotlin for Android Kotlin for JavaScript (JS) Frameworks in Kotlin/JS Kotlin/Native Why Is Kotlin/Native Used? Kotlin for Data Science Editors Who Work Interactively Kotlin for Competitive Programming Kotlin Language Applications Setup of the Kotlin Environment for Command Line Intellij IDEA Is Used to Build up a Kotlin Environment Kotlin Hello Everyone Program DATA TYPES IN KOTLIN Integer Data Type Floating-Point Data Type Boolean Data Type Character Data Type VARIABLES IN KOTLIN Immutable Using val Keyword Variable Scope Naming Convention OPERATORS IN KOTLIN Arithmetic Operator Relation Operator Assignment Operator Unary Operator Logical Operator Bitwise Operator KOTLIN STANDARD INPUT/OUTPUT Distinction between println() and print() Variables and Literals Print Input of Kotlin Take User Input with the readline() Function Take Input from the User Using the Scanner Class Take User Input without Using the Scanner Class TYPE CONVERSION IN KOTLIN Conversion of a Larger Data Type to a Smaller Data Type EXPRESSION, STATEMENT, AND BLOCK IN KOTLIN Expression in Kotlin Kotlin if Expression Statement in Kotlin Multiple Statements in Kotlin Block in Kotlin Variable Scope in Nested Blocks CONCLUSION CHAPTER 2: Object-Oriented Programming (OOP) Concepts OBJECTS AND CLASSES IN KOTLIN Language for Object-Oriented Programming Class Object NESTED CLASS AND INNER CLASS IN KOTLIN Nested Class In Comparison to Java Kotlin Inner Class Inner-Class Kotlin Program SETTERS AND GETTERS IN KOTLIN Setters and Getters Default Setter and Getter Kotlin Program Identifiers for Values and Fields Private Modifier Setter and Getter with Custom Parameters CLASS PROPERTIES AND CUSTOM ACCESSORS IN KOTLIN Property Customer Accessors KOTLIN CONSTRUCTOR Primary Constructor Primary Constructor with Initializer Block Secondary Constructor KOTLIN VISIBILITY MODIFIERS Public Modifier Private Modifier Internal Modifier Protected Modifier Overriding of Protected Modifier Constructor Visibility INHERITANCE IN KOTLIN Inheritance Use Primary Constructor for Kotlin Inheritance Secondary Constructor for Kotlin Inheritance Overriding Member Functions and Properties Calling the Superclass Implementation INTERFACES IN KOTLIN Interfaces Creating Default Methods and Default Values Interface Properties Interface Inheritance Implementation of Multiple Interfaces DATA CLASSES IN KOTLIN Data Class Creation Rules toString() copy() hashCode() and equals() KOTLIN SEALED CLASSES Sealed Class with When KOTLIN ABSTRACT CLASS Multiple Derived Classes ENUM CLASSES IN KOTLIN Enums Initializing Enums Properties and Methods Properties and Functions of the Enum Class Enums as Anonymous Classes Usage of When Expression with Enum Class KOTLIN EXTENSION FUNCTION Extended Library Class Using an Extension Function Extensions Are Resolved Statically Nullable Receiver Companion Object Extensions KOTLIN GENERICS Generic Usage in Our Program VARIANCE The out Keyword The in Keyword COVARIANCE CONTRACOVARIANCE TYPE PROJECTIONS STAR PROJECTIONS CONCLUSION CHAPTER 3: Exceptional Handling, Null Safety, and Regex and Ranges EXCEPTIONAL HANDLING IN KOTLIN | TRY, CATCH, THROW, AND FINALLY Exceptions in Kotlin What If We Don’t Handle Exceptions? How to Throw an Exception in Kotlin How to Avoid NullPointerException KOTLIN TRY-CATCH BLOCK Kotlin Try-Catch Block as an Expression Kotlin Finally Block Kotlin Throw Keyword NESTED TRY BLOCK AND MULTIPLE CATCH BLOCK IN KOTLIN Nested Try Block Multiple Catch Block NULL SAFETY Nullable and Non-Nullable Sorts in Kotlin Checking for the Null in Conditions Safe Call Operator(?.) run() Method Elvis Operator(?:) Not-Null Assertion (!!) Operator TYPE CHECKING AND SMART CASTING IN KOTLIN Type Checking Using When Expression Smart Casting Use of !is Operator EXPLICIT TYPE CASTING IN KOTLIN Unsafe Cast Operator: as Safe Cast Operator: as? REGEX AND RANGES Regular Expressions in Kotlin Regex Functions RANGES IN KOTLIN (..) Operator rangeTo() Function downTo() Function Range Using forEach Loop CONCLUSION CHAPTER 4: Control Flow Statements IF-ELSE EXPRESSION IN KOTLIN If Statement If-Else Statement If-Else Expression in Kotlin as Ternary Operator If-Else-If Ladder Expression Nested If Expression WHILE LOOP IN KOTLIN DO-WHILE LOOP IN KOTLIN Working of Do-While Loop FOR LOOP IN KOTLIN Iterate across the Range Using a For Loop Using a For Loop, Iterate over the Array Iterate through a String Using the For Loop Iterate over the Collection Using the For Loop WHEN EXPRESSION IN KOTLIN When to Use as a Statement with Else Using When as a Statement in the Absence of an Else Branch When Used as an Expression In Kotlin, Different Ways to Use When Block Check Whether the Input Value Is Inside the Range Check Whether a Provided Variable Is of a Specific Type Using When as a Replacement for an If-Else-If Chain Verify If a String Includes a Certain Prefix or Suffix UNLABELED BREAK IN KOTLIN Use of Unlabeled Break in a While Loop Use of Unlabeled Break in a Do-While Loop Use of Unlabeled Break in a For Loop LABELED BREAK IN KOTLIN Use of Labeled Break in a While Loop Use of Labeled Break in a Do-While Loop Use of Labeled Break in a For Loop UNLABELED CONTINUE IN KOTLIN Use of Unlabeled Continue in a While Loop Use of Unlabeled Continue in a Do-While Loop Use of Unlabeled Continue in a For Loop LABELED CONTINUE IN KOTLIN Use of Labeled Continue in a While Loop Use of Labeled Continue in a Do-While Loop Use of Labeled Continue in a For Loop CONCLUSION CHAPTER 5: Arrays and Strings, Functions, and Java Interoperability ARRAYS IN KOTLIN Creation of an Array Making Use of the arrayOf() Function Making Use of the Array Constructor Array Access and Modification Array Traversal STRING IN KOTLIN Creation of an Empty String Templates and String Elements String Literals Escaped String Raw String – Multiline String Escape Characters String Equality Structural Equality Referential Equality FUNCTIONS IN KOTLIN Standard Library Function in Kotlin Kotlin User-Defined Function Calling a User-Defined Function DEFAULT AND NAMED ARGUMENTS IN KOTLIN Default Arguments in Kotlin No Arguments Are Passed While Calling a Function Partial Arguments Are Passed While Calling a Function All Arguments Are Passed While Calling a Function Named Arguments in Kotlin RECURSION IN KOTLIN Normal Function Call Recursive Function Call TAIL RECURSION IN KOTLIN Benefits of Employing Tail Recursion LAMBDA EXPRESSIONS AND ANONYMOUS FUNCTIONS IN KOTLIN Lambda Expressions Inference in Lambda Types Type Declaration in Lambdas It: Implicit Name of a Single-Parameter Returning a Value from a Lambda Expression Anonymous Function Return Type and Parameters Distinction between Lambda Expressions and Anonymous Functions INLINE FUNCTIONS IN KOTLIN Non-Local Control Flow Crossline Keyword Noinline Reified Type Parameters Properties of Inline INFIX FUNCTION NOTATION IN KOTLIN Standard Library Infix Function Notation Notation for User-Defined Infix Functions Infix Function Precedence over Operators HIGHER-ORDER FUNCTIONS IN KOTLIN Higher-Order Function Returning a Function from a Higher-Order Function JAVA INTEROPERABILITY – USING JAVA TO CALL KOTLIN Properties of Kotlin Package-Level Functions Static Fields Static Methods Instance Fields Checked Exceptions JAVA INTEROPERABILITY – USING KOTLIN TO CALL JAVA Getters and Setters in Java Methods Static Members Java Arrays Java Varargs Types in Java and Kotlin Are Not the Same CONCLUSION CHAPTER 6: Collections in Kotlin COLLECTIONS IN KOTLIN Types of Collections Immutable Collection Mutable Collection ARRAYLIST IN KOTLIN Most Important Methods LISTOF() IN KOTLIN Indexing List Elements in Kotlin The First and Last Elements Iteration Methods for Lists Sorting the List’s Elements Contains() and ContainsAll() Functions SetOf () in Kotlin Set Indexing Set Basics Contains() and ContainsAll() Functions MUTABLESETOF() METHOD IN KOTLIN Adding and Deleting Elements from a Set Set Indexing Set the First and Last Element Traversal in a MutableSet Contains() and ContainsAll() Methods HASHSETOF() IN KOTLIN Adding and Deleting Elements from a HashSet HashSet Traversal Indexing in a HashSet Contains() and ContainsAll() Functions MAPOF() in Kotlin Map Size Empty Map Get Map Values Map Contains Keys or Values Two Values and the Same Key HASHMAP IN KOTLIN HashMap Time Complexity ANNOTATIONS IN KOTLIN Using Annotation Declaring Annotation Annotate a Constructor Annotate a Property Several Built-in Annotations @Target @Retention @Repeatable REFLECTION IN KOTLIN Class References Function References Property References Constructor References OVERLOADING OF THE KOTLIN OPERATOR Unary Operators Increment and Decrement Operators Binary Operators Other Operators KOTLIN DESTRUCTURING DECLARATIONS Destructuring Declaration in Lambdas EQUALITY EVALUATION Structural Equality Referential Equality KOTLIN COMPARATOR Function Functions of Extension CONCLUSION CHAPTER 7: Android Development with Kotlin KOTLIN FOR ANDROID How to Install and Configure Android Studio for Kotlin Development How to Make an Android Studio Project Using Kotlin HELLOO WORLD APP IN KOTLIN HOW TO SET UP AN ANDROID VIRTUAL DEVICE (AVD) KOTLIN ANIMATIONS FOR ANDROID Make a New Project Change the activity_main.xml File bounce.xml fade in.xml fade_out.xml rotate.xml slide_down.xml slide_up.xml zoom_in.xml zoom_out.xml Create MainActivity.kt File AndroidManifest.xml File KOTLIN ANDROID FADE IN/OUT Modify activity_main.xml File Add an anim Folder Change the MainActivity.kt File AndroidManifest.xml File MENUS FOR ANDROID How Can We Define a Menu in an XML File? Different Sorts of Menus in Android Kotlin Progress Alerts for Android Take Note of Notification Channels STRUCTURE OF THE ANDROID PROJECT FOLDER Manifests Folder Java Folder Resource (res) Folder Gradle Scripts Folder CONCLUSION APPRAISAL BIBLIOGRAPHY INDEX
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