Programming 101: Fundamentals & Your Career Path

Explore how code readability relies on comments, the most frequently used line comments with // and multi-line comments with /* ... */, which the compiler ignores and editors highlight.

Explore arithmetic operators in code, performing addition, subtraction, multiplication, division, and modulus to calculate values like a rectangle’s area, using precedence, parentheses, and increment or decrement.

Practice scenario shows how to calculate concrete volume by multiplying width, length, and height in meters, then increase by 10% and optionally round to two decimals using float or double.

Learn debugging to locate and fix errors in code using breakpoints, stepping through lines, evaluating expressions, and validating variable values to ensure correct output.

Learn how strings are objects with methods like length, to lowercase, and concat. See how the plus sign handles string concatenation versus numeric addition.

Learn how to include double quotes in strings using escape characters, print sentences, and use backslash escape sequences for quotes, new lines with \\n, and tabs with \\t.

Learn how to read user input from the console using the read line method, store it in a string variable, and print a personalized welcome message with string concatenation.

Explore conditional statements and branching using if, else, and else if to control flow with boolean conditions, featuring door code checks and odd/even using modulo.

Build a bmi calculator that reads weight and height, converts to metric, computes bmi with parentheses, and classifies as underweight, normal weight, overweight, or obesity.

Learn how programs use command-line arguments via the main method's args array, print each argument with a loop, and handle missing arguments to prevent errors, avoiding hard-coded paths across systems.

Examine blocks and scopes in code, showing how curly braces define blocks and control variable access across loops, conditionals, and methods, with outer variables persisting and inner declarations disappearing.

Create objects with the new keyword by using constructors to initialize attributes, possibly with parameters. Overload constructors to support defaults and different parameter lists, and use this to chain constructors.

Discover primitives versus references in Java, their default values, and how null and null pointer exceptions arise. Learn about wrapper classes and autoboxing as a bridge from primitives to objects.

Master encapsulation in object oriented programming by hiding fields and exposing only controlled access through getters and setters. Use public, protected, and private modifiers to keep code maintainable.

Learn how static methods belong to a class, not objects, enabling utility functions like temperature conversions. Use TemperatureConverter to convert Celsius to Fahrenheit and vice versa.

Build tools automate compiling, packaging, testing, and deployment, turning source code into executables and managing dependencies. Explore language-specific tools, general-purpose options like Bazel, and IDE build systems.

Demonstrates using Maven to manage dependencies, configure pom.xml, and build a Java project in IntelliJ, including Apache POI code to create an Excel file.

Read and understand the task, then develop with test driven development, pair programming, and code reviews, following coding standards and language style guides to deliver high quality code.

Explore how waterfall and agile shape the software development life cycle, detailing sequential design, testing, deployment, MVP milestones, and adaptive iterations.

Explore how Java, a statically typed, high-level language, achieves platform independence through bytecode and the JVM, enabling write once, run anywhere across web backends, Android, big data, and enterprise systems.

Discover Python, designed by Guido van Rossum in the Netherlands, first released in the early 90s, Tiobe index top language with versatile libraries for web, data science, and artificial intelligence.

Survey major programming languages and their characteristics, including compiled vs interpreted and statically vs dynamically typed, with examples such as C, C++, Java, JavaScript, TypeScript, Python, C#, and shell scripts.

Explore how web developers create internet apps using HTML, CSS, and JavaScript, interact with APIs and JSON, and distinguish front-end and back-end roles from DNS to browsers.

Explore the mobile developer role across native and cross-platform paths, covering Android and iOS stacks, languages (Java, Kotlin, Swift, Objective-C), UI tools, API integration, data management, testing, and workflows.

Explore the thriving world of game development, from choosing Unity, Unreal, or Godot to building 2D/3D worlds with visuals, physics, animations, audio, and AI.

Understand the roles of data scientists and machine learning engineers, from collecting and cleaning data to deploying AI models. Master Python, SQL, and tools like Pandas, NumPy, and scikit-learn.