⏳ Countdown

A tiny Java CLI that counts down to zero.

What is Countdown?

Countdown gives you a tiny terminal countdown.

Run Countdown with a number of seconds, and it counts down to zero.

Wait.

Watch the numbers drop.

Then you're done.

That's it.

Example

$ java -cp target/classes io.javalabs.Main 5

5
4
3
2
1
🚀

Run it again:

$ java -cp target/classes io.javalabs.Main 10

10
9
8
7
6
5
4
3
2
1
🚀

And maybe:

$ java -cp target/classes io.javalabs.Main 3

3
2
1
🚀

You wait.

It reaches zero.

Then you continue.

How It Works

1. Run Countdown with a number of seconds.
2. Countdown prints the current number.
3. Waits one second.
4. Counts down.
5. Reaches zero. 🚀

Tech Stack

• Java 21
• Thread.sleep()
• CLI

Run

Compile:

mvn clean compile

Run:

java -cp target/classes io.javalabs.Main 10

Replace 10 with however many seconds you want.

Why I Built This

Countdown is a tiny experiment with time, delays, and the terminal.

Give it a number.

Wait.

Watch it count down.

Run it.

Wait for zero.

🚀

JavaLabs.io

Part of JavaLabs.io - a collection of small Java experiments built to turn random ideas into working code.