Exercise This lab is designed to give you practice working with programmer defin

Question

Exercise

This lab is designed to give you practice working with programmer defined methods. You will write a method named validate to help a local banker. Your method will need to utilize two input parameters and the method's return value (for its output).

Getting Started
    To start this exercise, you should

        Open eclipse and start a new Java project named Lab10

        Add a Class (named Lab10) to this project.

        Cut the program from this document and paste (replacing everything) in the Eclipse editor window.

    Lab10.Java

    /*

    Comment block here ...

    */

    import java.util.Scanner;

    public class Lab10
    {
      public static void main(String[] args)
      {
        Scanner stdIn = new Scanner(System.in);

        double curBal = 45.32;
     
        double amount;
        System.out.print("Please enter a amount to update account by $");
        amount = stdIn.nextDouble();
        System.out.print(" ");

        System.out.print("Customer's balance (before transaction) = $");
        System.out.println(curBal + " ");
        System.out.print("Requested update amount = $");
        System.out.println(amount + " ");
       
        double actAmount;
        actAmount = validate(curBal, amount);
        curBal += actAmount;

        System.out.print("Actual update amount = $");
        System.out.println(actAmount + " ");
        System.out.print("Customer's balance (after transaction) = $");
        System.out.println(curBal + " ");

        System.out.println(" Thank you and good-bye! ");

        stdIn.close();
      }

      public static double validate(double bal, double amount)
      {
        // Write your code here ...

        return 0.0; // actual return value here (NOT 0.0)
      }
    }

Problem Description

    Read through the existing code to understand what it does and what is left for you to do.

    Compile and run the program as-is, to verify that you understand what it does and what is left for you to do.

    Write the missing code in the Java program program provided so that it satisfies the following specification:

        For this part of the assignment you will be using the Lab10.java file that you copied using the command above.

        A local banker has asked you to write a method named validate which takes :
            a customer's current balance
            the amount of money to update the account by :
                a positive dollar amount is a deposit
                a negative dollar amount is a withdraw

        as input parameters, and then returns

            for deposits: the deposit amount is simpily returned by the function.

            for withdraws: the balance must not become negative. If a withdraw is requested for more than the current balance then the amount (which would zero the balance if withdrawn) is returned by the method. Otherwise the withdraw amount is simpily returned by the method.

Explanation / Answer

already posted the answer here.

http://www.chegg.com/homework-help/questions-and-answers/exercise-lab-designed-practice-working-programmer-defined-methods-write-method-named-valid-q3894175

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