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[aspectj-users] exception handling within several methods
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I'm trying to figure out to change the exceptions for the scanner in several different methods into one aspect, I have done several things but a few times I've tried to run it I'm getting a no main error and no aspectj runtime error here is the code:
import java.util.Scanner;
public class atm
{
static Scanner sc = new Scanner(System.in);
static int check = 1000;
static int saving = 3500;
static int i = 0;
static int c = 0;
static int s = 0;
static int p = 0;
public static void main(String[] args)
{
welcome();
login();
System.out.println("Your checking has a balance of: $" + check + "\nYour savings has a balance of: $" + saving);
menu();
choice();
end();
}
public static void welcome()
{
String welcome;
welcome = "Welcome Mr. Smith, please enter your pin:";
System.out.println(welcome);
}
public static void login()
{
String wrong;
wrong = "You have entered the wrong pin, please try again";
int x = 1234;
int y = 0;
Scanner sc = new Scanner(System.in);
try
{
y = sc.nextInt ();
}
catch (Exception e)
{
System.out.printf("only numbers are allowed\n");
}
if (x!= y)
{
System.out.println(wrong);
p = p + 1;
if ( p == 3)
{
System.out.println("You did not enter your pin 3 times, atm is ending, please try again later");
end();
}
int x1 = 3 - p;
System.out.println("You have " + x1 + " more times to enter a correct value");
System.out.println("Please enter your pin again:");
login();
}
else
{
System.out.println("Thank you Mr. Smith");
}
}
public static void menu()
{
String choice;
choice = "What would you like to do";
System.out.println(choice + ":" + "\n1 Withdraw" + "\n2 Transfer");
}
public static void choice()
{
Scanner sc = new Scanner(System.in);
int option = 0;
try
{
option = sc.nextInt();
}
catch (Exception e)
{
System.out.printf("only numbers are allowed\n");
}
if (option == 1)
{
withdraw();
}
if (option == 2)
{
transfer();
}
else
{
System.out.println("You did not enter a valid option, please try again");
choice();
}
}
public static void transfer()
{
System.out.println("Which account would you like to transfer from \n1 Checking \n2 Savings");
Scanner sc = new Scanner(System.in);
int option = 0;
try
{
option = sc.nextInt();
}
catch (Exception e)
{
System.out.printf("only numbers are allowed\n");
transfer();
}
if (option == 1)
{
checkingtransfer();
System.out.println("You chose to transfer money from checking to savings");
}
if (option == 2)
{
savingstransfer();
System.out.println("You chose to transfer money from savings to checking");
}
else
{
System.out.println("You did not enter a valid option, please try again");
transfer();
}
}
public static void checkingtransfer()
{
System.out.println("How much would you like to move:");
Scanner sc = new Scanner(System.in);
int value = 0;
try
{
value = sc.nextInt();
}
catch (Exception e)
{
System.out.printf("only numbers are allowed\n");
checkingtransfer();
}
if (value <= check)
{
check = check - value;
saving = saving + value;
System.out.println("You have transfered $" + value + " to your savings from your checking");
System.out.println("Your checking has a balance of: $" + check + "\nYour savings has a balance of: $" + saving);
dosomethingelse();
}
else
{
System.out.println("You do not have enough in your checking to transfer that amount");
c = c + 1;
if ( c == 3)
{
System.out.println("You failed to enter a correct value 3 times, atm is ending, please try again later");
end();
}
int x = 3 - c;
System.out.println("You have " + x + " more times to enter a correct value");
checkingtransfer();
}
}
public static void savingstransfer()
{
System.out.println("How much would you like to move:");
Scanner sc = new Scanner(System.in);
int value = 0;
try
{
value = sc.nextInt();
}
catch (Exception e)
{
System.out.printf("only numbers are allowed\n");
savingstransfer();
}
if (value <= saving)
{
saving = saving - value;
check = check + value;
System.out.println("You have transfered $" + value + " to your checking from your savings");
System.out.println("Your checking has a balance of: $" + check + "\nYour savings has a balance of: $" + saving);
dosomethingelse();
}
else
{
System.out.println("You do not have enough in your savings to transfer that amount");
s = s + 1;
if ( s == 3)
{
System.out.println("You failed to enter a correct value 3 times, atm is ending, please try again later");
end();
}
int x = 3 - s;
System.out.println("You have " + x + " more times to enter a correct value");
checkingtransfer();
}
}
public static void dosomethingelse()
{
System.out.println("Would you like to withdraw money as well? \n1 Yes \n2 No");
Scanner sc = new Scanner(System.in);
int option = 0;
try
{
option = sc.nextInt();
}
catch (Exception e)
{
System.out.printf("only numbers are allowed\n");
dosomethingelse();
}
if (option == 1)
{
withdraw();
}
if (option == 2)
{
end();
}
else
{
System.out.println("You did not enter a valid option, please try again");
choice();
}
}
public static void withdraw()
{
System.out.println("FYI: You may only withdraw from checking");
System.out.println("What would you like to withdraw(it must be in denominations of 20 and no more than 200):");
Scanner sc = new Scanner(System.in);
int wm = 0;
try
{
wm = sc.nextInt();
}
catch (Exception e)
{
System.out.printf("only numbers are allowed\n");
withdraw();
}
if (wm <= 200 & (wm % 20) == 0 & check >= 0 & check - wm >= 0)
{
System.out.println("removing $" + wm + " from your checking account");
check = check - wm;
System.out.println("Your new balance is: $" + check);
System.out.println("Printing out your money, please remove your card money and reciept from the machine.");
end();
}
else
{
if (check < 0 | check - wm < 0 & i < 3)
{
System.out.println("Your account does not have enough funds");
i = i + 1;
if ( i == 3)
{
System.out.println("You did not enter a correct value 3 times that was less than the amount of funds you had, atm is ending, please try again later");
end();
}
int x = 3 - i;
System.out.println("You have " + x + " more times to enter a correct value");
withdraw();
}
if (wm > 200 | (wm % 20) != 0 & i < 3);
{
System.out.println("You have entered an incorrect withdraw value");
i = i + 1;
if ( i == 3)
{
System.out.println("You did not enter a correct value 3 times, atm is ending, please try again later");
end();
}
int x = 3 - i;
System.out.println("You have " + x + " more times to enter a correct value");
withdraw();
}
}
}
public static void end()
{
System.out.println("Thank you, Have a nice day");
System.exit(0);
}
}
public aspect exception
{
declare soft : java.io.IOException : execution(void atm.login());
void around() : call(void atm.login())
{
try
{
proceed();
}
catch(Exception e)
{
System.out.println("aspect caught: only numbers are allowed\n");
}
}
}
