Learn Kotlin Programming - Ramesh Fadatare

Kotlin is a modern, statically typed programming language developed by JetBrains and first released in 2016.

Kotlin is easy to learn, especially if you already know Java, as it is fully compatible with Java.

Kotlin is used to develop Android apps, server-side applications, and much more.

Google officially supports Kotlin for Android development, and many developers prefer it for building Android apps.

Kotlin Tutorial

Kotlin Control Flow Statements

Kotlin Functions

Kotlin Arrays and Strings

Kotlin OOPs

Kotlin Exception Handling

Kotlin Collections and Generics

150+ Guides to Koltin Built-in Functions

150+ Koltin Built-in Functions

Guides to Kotlin Types and Classes

Kotlin Standard Library – Types and Classes

Class/Interface	Description
Kotlin Any	The root of the Kotlin class hierarchy.
Kotlin Array Class	Represents an array of elements.
Kotlin ArrayIndexOutOfBoundsException	Thrown to indicate that an array has been accessed with an illegal index.
Kotlin AutoCloseable	A resource that must be closed when it is no longer needed.
Kotlin Boolean Class	Represents a value that can be either true or false.
Kotlin Byte Class	Represents an 8-bit signed integer.
Kotlin Char Class	Represents a 16-bit Unicode character.
Kotlin Comparable Interface	Defines a natural ordering for objects of the implementing class.
Kotlin Comparator Interface	Compares two objects to impose a total ordering.
Kotlin Enum Class	Represents a group of named constants.
Kotlin Int	Represents a 32-bit signed integer.
Kotlin Long	Represents a 64-bit signed integer.
Kotlin Nothing	Represents a value that never exists.
Kotlin Number Class	Represents a numeric value.
Kotlin OutOfMemoryError	Thrown when the JVM runs out of memory.
Kotlin Pair Class	Represents a pair of values.
Kotlin Short	Represents a 16-bit signed integer.
Kotlin String Class	Represents a sequence of characters.
Kotlin Throwable Class	The superclass of all errors and exceptions.
Kotlin Triple Class	Represents a triple of values.
Kotlin Unit Class	Represents the lack of a value.

Kotlin Exception Package – Types and Classes

Class/Interface	Description
Kotlin ArithmeticException	Thrown when an exceptional arithmetic condition has occurred.
Kotlin ClassCastException	Thrown to indicate that the code has attempted to cast an object to a subclass of which it is not an instance.
Kotlin ConcurrentModificationException	Thrown when a collection has been modified concurrently but not permitted by the collection.
Kotlin IllegalArgumentException	Thrown to indicate that a method has been passed an illegal or inappropriate argument.
Kotlin IllegalStateException	Signals that a method has been invoked at an illegal or inappropriate time.
Kotlin IndexOutOfBoundsException	Thrown to indicate that an index of some sort is out of range.
Kotlin KotlinNullPointerException	Thrown when a null reference is illegally accessed.
Kotlin NoSuchElementException	Thrown by various accessor methods to indicate that the element being requested does not exist.
Kotlin NotImplementedError	Thrown when a requested operation is not implemented.
Kotlin NullPointerException	Thrown when an application attempts to use null where an object is required.
Kotlin NumberFormatException	Thrown to indicate that a string could not be parsed as a number.
Kotlin RuntimeException	A runtime exception that is thrown to indicate that an error has occurred during the program’s execution.
Kotlin TypeCastException	Thrown to indicate that the code has attempted to cast an object to a subclass of which it is not an instance.

Kotlin Annotations

Annotation	Description
Kotlin @Deprecated Annotation	Marks the annotated declaration as deprecated.
Kotlin @JvmField	Marks the field as a JVM field, exposing it as a field in the bytecode.
Kotlin @JvmStatic	Marks the method as static in the bytecode.
Kotlin @JvmOverloads	Generates overloads for a function, allowing it to be called with fewer arguments.
Kotlin @JvmName	Specifies the name for a Kotlin function or property in the bytecode.
Kotlin @Suppress	Suppresses compiler warnings for the annotated element.
Kotlin @UnsafeVariance	Allows variance annotations to be used in otherwise illegal positions.

Kotlin Collections Package – Types and Classes

Class/Interface	Description
Kotlin ArrayDeque Class	Represents a double-ended queue (deque).
Kotlin ArrayList Class	Represents a resizable array.
Kotlin BooleanIterator Class	An iterator over a sequence of Boolean values.
Kotlin ByteIterator Class	An iterator over a sequence of Byte values.
Kotlin CharIterator Class	An iterator over a sequence of Char values.
Kotlin Collection Interface	Represents a group of objects.
Kotlin HashMap Class	Represents a hash table implementation of the Map interface.
Kotlin HashSet Class	Represents a hash table implementation of the Set interface.
Kotlin IntIterator Class	An iterator over a sequence of Int values.
Kotlin IndexedValue Class	Represents a value with an index.
Kotlin Iterable Interface	Represents a collection of objects that can be iterated over.
Kotlin Iterator Interface	An iterator over a sequence of values.
Kotlin LinkedHashMap Class	Represents a hash table and linked list implementation of the Map interface.
Kotlin LinkedHashSet Class	Represents a hash table and linked list implementation of the Set interface.
Kotlin List Interface	Represents an ordered collection of elements.
Kotlin ListIterator Interface	An iterator over a list of elements, allowing traversal in both directions.
Kotlin LongIterator Class	An iterator over a sequence of Long values.
Kotlin MutableList	Represents a list with mutable operations.
Kotlin Map Interface	Represents a collection of key-value pairs.
Kotlin MutableMap	Represents a map with mutable operations.
Kotlin MutableSet Interface	Represents a set with mutable operations.
Kotlin Set Interface	Represents a collection of unique elements.
Kotlin SortedMap Interface	Represents a map that maintains order among its elements.
Kotlin SortedSet Interface	Represents a set that maintains order among its elements.
Kotlin Vector Class	Represents a dynamic array that can grow as needed.

Kotlin Utilities

Class/Interface	Description
Kotlin Regex	Represents a regular expression for pattern matching.
Kotlin Range	Represents a range of values.
Kotlin Progression	Represents a progression of values with a step.
Kotlin Sequence	Represents a sequence of elements that can be iterated.
Kotlin StringBuilder	Represents a mutable sequence of characters.
Kotlin Duration	Represents a time-based amount of time.