Java Tutorials

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• Java Setup

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• Hello World
  • Higher Lower (Human Player)
  • Higher Lower (Random Computer Player)
  • Free Paycheck Calculator

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• Creating Classes
  • Taylor Swift Markov Model

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• Errors

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• Inheritance

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• Swing
  • Circle Button
  • Higher Lower

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• Libraries
  • Mastodon Bot

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• Eclipse

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• Exporting Jar Files

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• Processing in Java
  • Swing Control Window
  • Processing Showcase

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• Unit Testing

Chapter 1: Java Setup

Java Setup

Install and run Java.

Chapter 2: Hello World

Hello World

Write, compile, and run your first Java application.

Hello World Examples

Higher Lower (Human Player)

Try to guess what number the computer is thinking.

Higher Lower (Random Computer Player)

Think of a number and the computer will guess what it is.

Free Paycheck Calculator

Find months that have three paychecks in them.

Add Your Own Example

Add your own example to Happy Coding.

Chapter 3: Creating Classes

Creating Classes

Learn more about creating classes.

Creating Classes Examples

Taylor Swift Markov Model

Teach an AI to write Taylor Swift lyrics.

Add Your Own Example

Add your own example to Happy Coding.

Chapter 4: Errors

Errors

Catch exceptions and debug errors in your code.

Chapter 5: Inheritance

Inheritance

Take OOP to the next level.

Chapter 6: Swing

Swing

Create a graphical user interface.

Swing Examples

Circle Button

Rectangle buttons are so last year.

Higher Lower

Guessing game gui

Add Your Own Example

Add your own example to Happy Coding.

Chapter 7: Libraries

Libraries

The power of other people's code.

Libraries Examples

Mastodon Bot

Create a Mastodon bot using Mastodon4j

Add Your Own Example

Add your own example to Happy Coding.

Chapter 8: Eclipse

Eclipse

Upgrade your code editor.

Chapter 9: Processing in Java

Processing in Java

Use Processing as a Java library.

Processing in Java Examples

Swing Control Window

Create a Processing sketch with a Swing control window.

Processing Showcase

Create a Java program that cycles through Processing sketches.

Add Your Own Example

Add your own example to Happy Coding.

Chapter 10: Unit Testing

Unit Testing

JUnit and Mockito

Chapter 11: Exporting Jar Files

Exporting Jar Files

Package your code so other people can run it.