A java core based application for collecting an optimal package

Prerequisites

Java 8+

General info

The app parses an input file so that to get a list of ItemPackages.

Further improvements

1. Add logs;
2. In order to check the uniqueness of items within an ItemPackage, consider a following addition: a HashMap (keys: itemNumbers, values: counter);
3. Consider changing APIException to unchecked one so that to use in Java Stream API without a workaround.

Requirements to consider before using the app.

1. The project should be built by means of Gradle. For that reason, run gradlew clean build. Subsequently, to start the application make use of gradlew run --args='src/main/resources/input.txt' where src/main/resources/input.txt is a path to file.
2. Most part of the code is covered with unit tests based on Junit5.