Java Bootcamp: Learn Java with 100+ Java Projects

Install Java on your machine and download Visual Studio Code, a fast, lightweight editor with excellent Java support, then write and run your first code.

Install Java 17 with the long term support Java development kit, using Amazon Kratos JDK on Windows; download, run the installer, and verify Java version 17 in command prompt.

Install Java 17 on a Mac using Amazon Kratos JDK, choosing the correct architecture for Apple Silicon or Intel, running the installer, and verifying the Java version in a terminal.

Install Visual Studio Code as the Java editor and download the Java Extension Pack to enable testing, debugging, and autocomplete in your Java projects.

Set up Mac with Visual Studio Code, create a HelloJava class in camel case, write a main method, print a message, and run the program.

Set up Windows with Visual Studio Code and Java, create a camel case Java file, define a class with a main method, and print Hello Java.

Master Mac terminal workflow by compiling Java code with javac into bytecode in a .class file and running it with java, recompiling after every change to update output.

Compile Java code with the Java C compiler to produce bytecode in a class file, then run with the Java command and recompile after changes with a main entry point.

Explore inlay hints as markers in code indicating where to print messages and their usefulness in the function section; learn to disable them on mac via code preferences and settings.

Customize your editor by selecting a color theme in VS Code, install Brackets Dark, and adjust font size to 14–20 for comfortable viewing.

Download the course resources from GitHub if you're using a Mac, unzip them, and access workbooks and challenges to practice coding and tackle big challenges after each section.

Download the course resources from GitHub, extract the zip on Windows, and use workbooks to practice coding by solving simple problems and tackle big challenges that build bigger projects.

Find video solutions for every workbook in the last section of the Udemy course, providing practical support for Java project practice.

Print the initials across seven lines with five spaces between letters. Run and debug with breakpoints, opening only the folder containing your Java file.

Learn how to declare variables to store data types such as int, long, String, char, and double, and build an interactive app that saves each user answer in a variable.

Discover how to use variables to store numeric data in Java, compare int and long, and apply the memory-saving rule with lower camel case naming for passengers and tickets.

Learn updating a four-byte java int in range using plus equals and minus equals in a bus example starting at zero and updating to nine, four, and zero with prints.

Explains how the string type stores text, how to declare string variables in lower camel case, and how to concatenate strings and numbers with the plus operator followed by printing.

Use the char type to store single characters, wrap them in single quotes, and learn that a char always occupies two bytes in memory.

Master using the long type in Java to store large numbers beyond 2 billion, including 9 quintillion range, and apply the L suffix and formatting with underscores for readability.

Use the double type to store decimals and understand how Java uses eight bytes for this type. Include at least one double in calculations to preserve decimals.

Explore the nine Java math operators, including plus, minus, multiplication, division, modulus, add one, subtract one, add by, and subtract by, with string examples.

Learn how to cast values from int to double and back in Java to handle decimal results and keep integers where needed.

Build an interactive Java application with Scanner that asks questions and responds to answers, using nextLine, nextDouble, and nextInt to collect text, decimal, and integer input.

Master debugging by setting breakpoints, stepping through Java code, and tracing variable states to fix integer division and produce correct decimal averages; avoid excessive print statements.

Explore the next line trap in Java’s scanner inputs, using nextInt, nextDouble, nextLong, and nextLine, and fix it by inserting a throwaway nextLine before the real input.

Explore a Java chat bot solution for challenge two, using variables and Scanner to read name, home, age, and language, handle nextLine traps, and embed 400/age in responses.

Learn to control code execution with booleans and conditionals, using true and false to run or skip code, then compare values against multiple cases to select the matching action.

Explore the boolean type in Java by declaring booleans, assigning true or false, and printing them to visualize how booleans support comparisons.

Explore comparison operators in Java: greater than, less than, greater than or equal to, less than or equal to, and equal and not equal operators, which yield true or false.

Never use == or != when comparing strings in Java. Use string1.equals(string2) to check equality and avoid inconsistent results and bugs.

Learn how if-else statements drive code blocks based on boolean conditions, with examples from grades, sales, temperature, speed, retirement, and string comparisons, including using equals for strings.

Learn how to test multiple conditions in Java with a chain of else if statements, using weather, grades, and job titles examples, and understand first true condition execution.

Learn to use Java logical operators—and, or, not—with real-world examples like driving eligibility, loan qualification, and account access via username and password; and practice debugging boolean expressions.

Explore switch statements in Java to compare a variable against a list of values, creating cleaner code, and learn when to use if-else for complex conditions and break behavior.

Build an interactive dealership app using switch statements and scanner inputs to buy or sell cars. Implement budget checks, insurance, license, and credit score logic to complete or reject sales.

solve challenge three by reading four answers with a scanner, score five points per correct, check c, a, d, and a or b, then print feedback.

Organize your code with functions, learn how parameters drive tasks and how return values complete computations, and master fundamentals that underpin every programming language.

Define and call functions to modularize Java code, turning repetitive tasks into reusable blocks. Learn function naming, static and public access, void return type, and invoking from main.

Learn how to define and use function parameters to compute rectangle areas; create a calculate area function with length and width, pass arguments, and reuse it for multiple rectangles.

Learn to design a function that returns a value with a double return type, separating calculation from printing and storing the area in variables across calls.

Learn to create functions that return strings, handle language cases with a switch, and provide a default message for unsupported inputs; then visualize runtime with breakpoints.

Explore void versus value-returning functions by showing how print area performs no return while calculate area returns the computed value; see how length, width, and area flow through explain area.

Learn to write Java doc comments that describe a function's purpose, parameters, and return values, using the /** skeleton generated by Java to document functions.

Understand how Java variable scope defines life span, with locals inside a function and globals at class level, boundaries enforced by curly brackets, and why global variables are risky.

Discover how Java provides numerous built-in functions, from string length and to lowercase to math operations like sqrt, pow, and max, and learn to read documentation instead of memorizing code.

Java bootcamp dice project demonstrates using functions, parameters, and return values with a scanner to roll three dice and compare sums with user choices.

Build a Java dice game by validating three inputs with scanner and next int, using modular boolean functions for range checks, sums, and win conditions.

Implement a rock, paper, scissors game in Java, prompting user input, generating a random computer choice with a public static function, and testing the flow.

Implement a function to determine rock, paper, scissors outcomes by checking user and computer choices, returning you win, you lose, or it's a tie, and printing the result.