📎 This article includes 1 downloadable practice file ↓
📘 Java Beginner Course · Lesson 4 of 8
“`java
static double gst(double amount, double rate) {
return Math.round(amount * rate * 100) / 100.0;
}
static double gst(double amount) { return gst(amount, 0.18); } // overload with a default rate
“`
The return type comes before the name (double); void returns nothing. Methods with the same name but different parameters are overloads .
💡 A method should do one thing; if its name needs ‘and’, split it.
Code for this course follows standard, current syntax; we test JavaScript and PowerShell scripts before publishing, and R/Java/Rust examples are kept to core language features. Tell us if anything fails on your setup.
Practice
Add an overloaded gst() method to Basics.java.
← Java Lesson 3: Conditions and Loops Java Lesson 5: Classes and Objects →
📎 Practice files for this article Free to use for learning. Files with macros (.bas) are plain text — import them with Alt +F11 → File → Import File, and always test on a copy.
Written by Atul Vij Atul (AJ) builds office-automation and local-first AI tools as Atulya AI, and works with Excel, SAP and Oracle EPM every day. He writes about the shortcuts, macros and automations that actually save time — plus the occasional wacky fact. Videos on YouTube: Lazy Automator AI (@LazyAutomatorAI).
More posts by Atul → ← Previous Java Lesson 3: Conditions and LoopsNext → Java Lesson 5: Classes and Objects
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