Implementation of vending machine that returns optimal change for a given number of pence. Supports unlimited and limited supply of coins. Available coins are 1p, 2p, 5p, 10p, 20p, 50p & £1.
Contains coins with unlimited count. To run application with unlimited supply the --unlimited argument should be provided right after application name in command line.
vending-machine --unlimited
Contains coins with limited count. Initial supply is defined in inventory.properties file with format of denomination = count
100=11
50=24
20=0
10=99
5=200
2=11
1=23
To run application with limited supply of coins the --limited argument should be provided.
vending-machine --limited
Coins are reduces each time when vending happens and on not enough balance the systems will return insufficient coinage error. Property file gets updated accordingly.
$ java -jar vending-machine-1.0.jar --unlimited
Welcome to Vending Machine!
Press Ctrl+C to quit..
Enter amount: 1891
The least required coins are 22.
£1x18, 50px1, 20px2, 1px1
Enter amount:
To build a project run
./gradlew build
It will create an executable jar file.