Practical Coding in Java
Learn to write and validate your own code
Darren Kessner, PhD
(revised September 1, 2025)
Introduction
About the book
About the author
Resources
0. Hello, world!
Hello
Basics
Loops
Sequences
Coding Exercises: Hello
1. Functions and Testing
Functions
MonkeyTrouble
Coding Exercises: Functions and Testing
2. Strings and Math
HelloStrings
HelloMath
HelloRandom
Coding Exercises: Strings and Math
Appendix A: Numeric Conversion
Decimal and Hexadecimal
Converting from Decimal to Hex
Binary
Converting between Hex and Binary
Octal
Exercises: Numeric Conversion
Next:
Introduction
