Program to determine salvage value

/* Program to determine salvage value */

class P14
{
    public static void main(String args[])
    {
        double purchase_price, salvage_value,depreciation;
        int years_of_service;

        purchase_price = 250;
        years_of_service = 5;
        depreciation = 30;

        (salvage_value)= -(depreciation*years_of_service-purchase_price);
        System.out.println(" salvage value ="+salvage_value);

    }
}