Java Fundamentals: Learn the Basics of Java
Java fundamentals Learn Java basics:
Java has been around for a long time and has been the driving force in the IT industry. Additionally, it’s one of the most popular and sustainable programming languages ever created. Its flexibility is unmatched as it’s used in virtually all domains of software development. Furthermore, Java is often used for building web applications, desktop applications, mobile applications, game engines, etc.
This course will help you build strong foundations by mastering the fundamentals of the Java programming language. Moreover, we will go over all the essentials and leave no stone unturned, in your path to becoming a successful Java developer.
Whether you’re starting from scratch or looking to reinforce existing knowledge, this comprehensive curriculum will ensure you build a strong foundation. After this course, you will be ready to pursue your career path as a Java developer.
You will have plenty of options in front of you. Additionally, whether you choose to build web applications, desktop applications, mobile applications, or all of them, as long as you have strong knowledge of the fundamentals, switching between different technology stacks is easy.
I’ve structured this course in such a way that lessons aren’t too long and get straight to the point. Furthermore, at the end of each section, there is a quick recap, quizzes, and coding exercises. None of the exercises are mandatory, but I encourage you to try them at least once.
There is already plenty of free learning material out there. However, it’s easy to get lost and stuck, not knowing where to go next. Java fundamentals learn Java basics course is well-structured and covers the whats, whys, and hows, all in one place
Data Types and Variables
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1
Introduction -
2
What is Java?
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3
Installing Java (Windows, Mac)
Windows and Mac
You can download the Java Development Kit (JDK) at: https://www.oracle.com/java/technologies/downloads/
I recommend downloading the latest suggested version.
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Installing Java (Linux)
Ubuntu
To install the JDK on Ubuntu, you can use apt. Here is a good guide by Linode:
https://www.linode.com/docs/guides/how-to-install-openjdk-ubuntu-22-04/#how-to-install-openjdkIf you want to use multiple versions of Java, follow this guide:
https://aboullaite.me/switching-between-java-versions-on-ubuntu-linuxFedora
On Fedora you can use dnf to install OpenJDK:
https://docs.fedoraproject.org/en-US/quick-docs/installing-javaOpenSUSE
On OpenSUSE the installation is more complicated due to Oracle's licensing issues. However, it's not impossible and OpenSUSE provides a guide on how to install Java:
https://en.opensuse.org/SDB:Installing_JavaArch Linux
Arch Linux has a utility for easily installing Java:
https://wiki.archlinux.org/title/javaRHEL
On Red Hat Linux you can install Java with yum:
https://access.redhat.com/documentation/en-us/red_hat_build_of_openjdk/21/html/installing_and_using_red_hat_build_of_openjdk_21_on_rhel/installing-openjdk11-on-rhel8_openjdkGentoo
To install Java on Gentoo, you can follow these instructions from their wiki page:
https://wiki.gentoo.org/wiki/Java -
5
Installing IntelliJ (Windows, Mac)
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6
Installing IntelliJ (Linux)
Flatpak
Official Flatpak image: https://flathub.org/apps/com.jetbrains.IntelliJ-IDEA-Community
flatpak install flathub com.jetbrains.IntelliJ-IDEA-Community
Snap
Official Snap image:
sudo snap install intellij-idea-community --classic
https://snapcraft.io/intellij-idea-community
AppImage
Not available at the time of me writing this.
Manual Install
Download .tar.gz file from the IntelliJ IDEA website, unpack it, and you will find instructions setting everything up. https://www.jetbrains.com/idea/download/?section=linux
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7
Our First Java Project
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/01_getting_started/03_our_first_java_project.md
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8
Java Architecture Overview
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/01_getting_started/04_java_architecture_overview.md
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9
Quick Recap
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10
How to Take This Course -
11
Source Code
The source code (and more) can be found in my public GitHub repository:
https://github.com/bezbos/complete-java-course
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12
Where to Find Me
You can find me on the following platforms (no links due to Udemy rules, so I've placed my username or name):
YouTube: bezbos
LinkedIn: Boško Bezik
Medium: bezbos.
GitHub: bezbos
StackOverflow: bezbos
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13
Getting Started Quiz
Operators
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14
Variables
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/01_variables.md
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15
Final Variables
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/02_final_variables.md
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16
Expressions & Statements
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/03_expressions_statements_blocks.md
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17
Comments
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/04_comments.md
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18
Primitive Types
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/05_primitive_types.md
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19
Floating Point Primitives
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/06_floating_point_and_big_decimal.md
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20
Strings
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/07_strings.md
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21
String Escape Sequences
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/08_string_escape_sequences.md
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String Formatting
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/09_formatting_strings.md
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23
Multiline Strings (Text Blocks)
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/10_multiline_strings_text_blocks.md
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Primitive Type Casting
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/11_primitive_type_casting.md
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25
Converting Strings and Numbers
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/12_conversion_between_strings_and_numbers.md
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26
Static Typing and `var` Type Name
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/13_var_typename.md
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27
Compile-time vs Runtime
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/16_compile_time_vs_runtime.md
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28
Default Values
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/14_default_values.md
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29
Literals and Literal Formatting
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/02_data_types_and_variables/15_literals_and_literal_formatting.md
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30
Quick Recap
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31
Data Types and Variables Quiz
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32
Addition with Variable Values
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33
String Concatenation
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34
String Manipulation
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35
String Formatting
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36
String Escape Sequences
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37
Replacing Strings
Arrays
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38
Arithmetic Operators
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/03_operators/01_arithmetic_operators.md
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39
Advanced Arithmetic Operations
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/03_operators/02_advanced_arithmetic_operations.md
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40
Logical Operators
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/03_operators/03_logical_operators.md
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41
Operator Precedence
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/03_operators/04_operator_precedence.md
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42
Bitwise and Bitshift Operators
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/03_operators/05_bitwise_and_bitshift_operators.md
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43
Quick Recap
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44
Operators Quiz
Conditional Statements
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45
Arrays
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/04_arrays/01_arrays.md
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46
Multidimensional Arrays
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/04_arrays/02_multidimensional_arrays.md
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47
Array Methods
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/04_arrays/03_array_methods.md
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48
Quick Recap
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49
Arrays Quiz
Loops
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50
`if` Statement
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/05_conditional_statements/01_if_statement.md
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51
Reading Console Input
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/05_conditional_statements/02_reading_console_input.md
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52
`switch` Statement
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/05_conditional_statements/03_switch_statement.md
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53
`switch` Expression
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/05_conditional_statements/04_switch_expressions.md
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54
Quick Recap
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55
Conditional Statements Quiz
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56
Temperature Checker
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57
Temperature and Weather Checker
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58
Day Teller
Effective Coding
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59
`while` Loop
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/06_loops/01_while_loop.md
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60
`do-while` Loop
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/06_loops/02_do_while_loop.md
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61
`for` Loop
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/06_loops/03_for_loop.md
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`break` Statement
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/06_loops/04_break_statement.md
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`continue` Statement
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/06_loops/05_continue_statement.md
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Processing Arrays with Loops
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/06_loops/06_processing_arrays_with_loops.md
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`for-each` Loop
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/06_loops/07_enhanced_for_loop.md
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Quick Recap
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Even Numbers
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68
Sum of Elements
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69
Guess the Number
Debugging and Deployment
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70
Extracting Methods
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/07_effective_coding/01_extracting_methods.md
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71
Effective Naming
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/07_effective_coding/02_effective_naming.md
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Refactoring
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/07_effective_coding/03_refactoring.md
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Avoiding Code Duplication
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/07_effective_coding/04_avoiding_code_duplication.md
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Magic Strings and Numbers
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/07_effective_coding/05_magic_strings_and_numbers.md
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75
Effective Commenting
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/07_effective_coding/06_effective_commenting.md
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Code Style and Formatting
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/07_effective_coding/07_code_formatting_and_style.md
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77
Version Control and Collaboration
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/07_effective_coding/08_version_control_and_collaboration.md
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Effective Documentation
Source code:
https://github.com/bezbos/complete-java-course/blob/main/01_java_fundamentals/07_effective_coding/09_effective_documentation.md
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Quick Recap
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Effective Coding Quiz
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