DabMaster3000 (Java)

Author: Emil Paul

Intro

I built this after my first TV Bingo night around Christmas. The calls move fast, and I kept getting lost when I tried to play 2 cards at the same time. So I made this Java program to dab numbers on my laptop. It supports multiple bingo cards at once, which is basically impossible to manage by hand.

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What it does

• Loads 6 bingo cards (5x5) from cards.txt
• FREE center is always marked
• Accepts calls like B12, I29, N33, G50, O70
• Marks only the correct column based on B / I / N / G / O
• Prints updated cards after each call (* = dabbed)
• Checks for a winner after every call
• Type QUIT to stop

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How to run

Option A: IDE (VS Code / IntelliJ)

1. Open a terminal in the project folder
2. Compile the program javac src\*.java
3. Run the program java src.Main

copy and paste to run:

cd D:\BINGO javac src\*.java java src.Main

Game modes included

• 2 lines OR (1 line + 4 corners)
• Letter X
• Full card
• Double Postage Stamp (corner stamps only)
• Around the FREE
• B & O (first and last columns)

cards.txt format

Rules

• Must contain 6 cards
• Each card is 25 numbers (5 lines × 5 numbers)
• Total = 150 integers
• Blank lines between cards are OK
• Put 0 in the center spot (recommended)

Example (1 card)

10 19 31 48 61
5 26 45 60 74
11 25 0 55 72
6 24 40 50 71
7 27 32 49 70 

AI prompt to generate cards.txt from a photo (Easy method)

Copy/paste this prompt with your bingo sheet image:

Extract the 6 bingo cards from this image and output ONLY the numbers formatted for cards.txt: 6 blocks, each block is 5 lines of 5 integers. Put 0 in the center FREE spot of each card. No extra text.

NOTE: We can also use Google Lens or Physically entering (not recommended)