import java.util.Scanner;
public class ServiceCharge {
public static void main(String[] args)
{
    double checkAmount;
    double fee;
    Scanner kb = new Scanner(System.in);
    System.out.println("I will calulate the service charge to cash your check");
    System.out.print("Enter amount of check: $");
    checkAmount = kb.nextDouble();

    if (checkAmount > 0)
    {
        if (checkAmount <= 10)
        {
            fee = -1;
            System.out.println("$1 service charge");
            checkAmount = checkAmount + fee;
            System.err.println("You have " + checkAmount + " left after service charge.");
        }
        else if ((checkAmount > 10) && (checkAmount <= 100))
        {
            System.out.println("There will be a 10 percent charge.");
            fee = (checkAmount * .10);
            checkAmount = checkAmount - fee;
            System.out.printf("Processing fee: $%.2fn" , fee);
            System.out.printf("Check amount: $%.2fn" , checkAmount);
        }
        else if ((checkAmount > 100) && (checkAmount <= 1000))
        {
            System.out.println("There will be a $5 charge plus 5 percent");
            fee = ((checkAmount - 5) * .05);
            checkAmount = (checkAmount - fee);
            System.out.printf("Processing fee: $%.2fn" , fee);
            System.out.printf("Check amount: $%.2fn", checkAmount);
        }
        else
        {
            System.out.println("$40 processing fee plus 1 percent");
            fee = ((checkAmount - 40) * .01);
            checkAmount = (checkAmount - fee);
            System.out.printf("Processing fee: $%.2fn" , fee);
            System.out.printf("Check amount: $%.2fn" , checkAmount);
        }
        System.out.println("Thanks for using Service Charger." + "nGood bye");
    }
}
}

System.out.println("$40 processing fee plus 1 percent");
            fee = ((checkAmount - 40) * .01);

fee = 40 + 0.01*checkAmount;

fee = 40 + (checkAmount - 40) * .01;

public class ServiceCharge {
    public static void main(String[] args) {

        Scanner kb = new Scanner(System.in);
        System.out.println("I will calulate the service charge to cash your check");
        System.out.print("Enter amount of check: $");
        double checkAmount = kb.nextDouble();

        if (checkAmount > 0) {
            double fee;
            String feeMessage;
            if (checkAmount <= 10) {
                fee = 1;
                feeMessage = "$1 service charge";
            } else if ((checkAmount > 10) && (checkAmount <= 100)) {
                feeMessage = "10 percent charge.";
                fee = (checkAmount * .10);
            } else if ((checkAmount > 100) && (checkAmount <= 1000)) {
                feeMessage = "$5 charge plus 5 percent";
                fee = 5 + ((checkAmount - 5) * .05);
            } else {
                feeMessage = "$40 processing fee plus 1 percent";
                fee = 40 + ((checkAmount - 40) * .01);
            }
            checkAmount = checkAmount - fee;

            System.out.printf("Fee structure: " + feeMessage);
            System.out.printf("Processing fee: $%.2fn", fee);
            System.out.printf("Check amount: $%.2fn", checkAmount);
            System.out.println("Thanks for using Service Charger.nGood bye");
        }
    }
}