Comprehensive Guide Kotlin and Jetpack Compose: Zero to Hero

Create a new Kotlin project in IntelliJ IDEA, configure the language and JDK, write a main function, and run to see 'Hello World' printed in the console.

Explore Kotlin data types, including numbers, strings, and characters, and learn how to use them effectively within your programs.

explains how to declare int and long variables, use explicit types, perform arithmetic, and print results, covering floats, doubles, type inference, and println vs print in Kotlin.

Revisit the BMI calculator, run the app, and enable user input with readLine, prompting for height and weight, converting to double, and computing BMI from the values.

Discover how strings power Kotlin and Jetpack Compose apps, with examples from hello world and other usages, showing how to work with strings in various ways.

Learn strings in Kotlin by declaring variables, using the length property to get characters count, printing results, and handling empty strings with zero length.

Learn string concatenation in Kotlin by using the plus operator to join string variables, build a full name with a space, and print the result to see the combined output.

Learn how trim indent removes leading whitespace to produce neat text output in Kotlin strings. Understand essential string operations and how indentation affects display in Kotlin and Jetpack Compose projects.

Learn how logical operators not, and, or evaluate boolean expressions, using examples with humid and rain to illustrate negation, conjunction, and disjunction in Kotlin code.

Learn how Kotlin uses comparison operators to evaluate conditions and drive decisions by comparing ages with less than, greater than, and less than or equal.

Understand how for loops execute code multiple times to handle repetitive tasks like printing each character of a text using a print line.

Explore executing loops with inclusive and exclusive ranges in Kotlin, using a print line function to iterate from 1 to 10 and employ string templates for each line.

Explore exclusive loops in Kotlin by using the until keyword to create an exclusive range, contrasting it with inclusive ranges and printing lines from one to ten.

Master step-based for loop execution in Kotlin by using an exclusive range and a step size to skip values, printing 1, 3, 5, 7, and 9.

Explore how the if expression in Kotlin evaluates a condition and executes a code block when true, printing good morning and controlling your application's flow.

Explore the else keyword in if statements by using an else branch to run code when the value is false, ensuring exactly one branch executes.

Demonstrate using if statements to classify a number as positive, negative, or zero. Refactor with else if and nested ifs to improve efficiency and readability.

Apply conditional execution in kotlin to classify bmi values into underweight (<18.5), normal (<25), overweight (<30), and obese (≥30) using if and else if and print the result.

Explore how while loops execute actions while a condition remains true, contrast them with for loops, and learn to manage or avoid infinite loops in Kotlin programming.

Learn the difference between while and do while loops, noting pretest versus post test. See how the do while loop prompts for user input and repeats until zero.

Move code from the main function into custom Kotlin functions, define functions with fun, pass parameters like message, and call these functions to improve readability and reusable code.

Create a Kotlin function that accepts parameters A and B as ints, prints the sum with a string template, and demonstrates reusing the function with C and D.

Learn to write Kotlin functions that return values, compare two ints to find the max with an if statement, and call the function from main to print the result.

Kotlin single-expression function techniques by inlining a variable and returning a conditional value, returning A if A > B, otherwise B.

Explore Kotlin's nullability by seeing how variables are non-null by default, learn how to mark a type as nullable with a question mark, and handle null assignments safely.

Apply the classic if-else approach to handle nulls in Kotlin. Check non-null language, uppercase it, or fall back when null, and observe runtime behavior with a print line.

Discover how to handle nullable types in Kotlin with the Elvis operator, providing fallback text when values are null, and simplify null checks.

Discover collections in Kotlin, including arrays, lists, sets, and maps, and how immutable size, mutable elements, duplicates, ordering, and key-based access shape data handling.

Develop a Kotlin stock profitability project using object-oriented programming, featuring a Stock class for symbol, shares and cost, plus a main function for user input and profit comparison.