嵌套的while循环不循环吗？

Question

Here's the code:

while (keepGoingDay.equals("y") || keepGoingDay.equals("y")){
        System.out.println(acct1);
        System.out.println(acct2);
        Account.reset();

        while (keepGoing.equals("y") || keepGoing.equals("y"))
            {
            //get account number, what to do, and amount
            System.out.print("\nEnter the number of the account you would like to access: ");
            acctNumber = scan.nextLong();
            System.out.print("Would you like to make a deposit (D) or withdrawal (W)? ");
            action = scan.next();
            System.out.print("Enter the amount: ");
            amount = scan.nextDouble();

            if (amount > 0)
                if (acctNumber == acct1.getAcctNumber())
                if (action.equals("w") || action.equals("W"))
                    acct1.withdraw(amount);
                else if (action.equals("d") || action.equals("D"))
                    acct1.deposit(amount);
                else 
                    System.out.println("Sorry, invalid action.");
                else if (acctNumber == acct2.getAcctNumber())
                if (action.equals("w") || action.equals("W"))
                    acct1.withdraw(amount);
                else if (action.equals("d") || action.equals("D"))
                    acct1.deposit(amount);
                else 
                    System.out.println("Sorry, invalid action.");
                else
                System.out.println("Sorry, invalid account number.");
            else
                System.out.println("Sorry, amount must be > 0.");


            System.out.print("\nMore transactions? (y/n)");
            keepGoing = scan.next();        
            }
        System.out.println("End of day stats: ");
        System.out.println("Number of deposits: " + Account.getNumDeposits());
        System.out.println("Number of withdrawals: " + Account.getNumWithdrawals());
        System.out.println("Total value of deposits: " + Account.getTotalDeposits());
        System.out.println("Total value of withdrawals: " + Account.getTotalWithdrawals());
        System.out.print("More days?");
        keepGoingDay = scan.next();
         }

}

I don't think the methods are too essential to this so I'll leave them out to save space.

The goal of this program is to have transactions be recorded and counted for multiple days (unknown amount so I couldn't use a for loop).

It goes through the first run fine and after that, it skips over the inner while loop.

I've looked at the braces and don't think that's the issue.

Answer 1

Did you mean Y or y :

while (keepGoing.equals("Y") || keepGoing.equals("y")) 

You code was testing the same thing, ie y , twice.

FYI, your tests could be simplified to:

while (keepGoing.equalsIgnoreCase("y")) 

Answer 2

put scan.next(); after your acctNumber = scan.nextLong(); line and amount = scan.nextDouble(); line.

Like this. check my newly added lines.

            System.out.print("\nEnter the number of the account you would like to access: ");
            acctNumber = scan.nextLong();
            scan.next(); // newly added
            System.out.print("Would you like to make a deposit (D) or withdrawal (W)? ");
            action = scan.next();
            System.out.print("Enter the amount: ");
            amount = scan.nextDouble();
            scan.next(); // newly added

Answer 3

If I had the flexibility to change the skeleton program, I would have used boolean variables.

However, the solution that you have to put in place is to reset keepGoing to "y" because it was set to "n" causing it to be skipped.