package uebung05.logistics.material;

import uebung05.logistics.quantities.IntUnit;

public class ShellBatches implements IntUnit{
    private static ShellBatches instance;
    private int amount;

    private ShellBatches(int amount){
        this.amount = amount;
    }

    @Override
    public String toString() {
        return amount + " batches of 120mm shells";
    }

    public static ShellBatches getInstance(int amount){
        if (instance == null){
            instance = new ShellBatches(amount);
        }
        return instance;
    }

}