| Methods Summary |
|---|
| public void | input_user_data()
int cont=0;
String accno="";
String pinno = "";
try
{
//wait for 1500ms
Thread.sleep(1500);
}
catch(InterruptedException iesleep1)
{
System.out.println("Error - couldn't activate Sleep");
}
//display opening title
System.out.println("\n\nWelcome to the Virtual Bank v1.0");
System.out.println("--------------------------------");
//while do not continue to next stage,loop
while(cont==0)
{
cont = 1;
try
{
System.out.println("\nPlease Enter Account no. - ");
try
{
//read in account no. from user
accno = userin.readLine();
acc_no = Integer.valueOf(accno).intValue();
}
//caught if account no. could not be read,terminates program
catch(IOException ex2)
{
System.out.println("Error - Could not read account no.");
System.out.println("Exiting..........");
System.exit(0);
}
//if account no. is invalid account no. do not continue
if(accno.length()!=6)
{
cont=0;
}
System.out.println("\nPlease Enter PIN no. - ");
try
{
//read in pin no. from user input
pinno = userin.readLine();
pin_no = Integer.valueOf(pinno).intValue();
}
catch(IOException ex3)
{
System.out.println("Error - Could not read pin no.");
System.out.println("Exiting.........");
System.exit(0);
}
//if user input less than or greater than 4 digits do not continue
if(pinno.length()!=4)
{
cont=0;
}
}
//catchs invalid data input(e.g. not int type)
catch(NumberFormatException nfe1)
{
cont = 0;
}
//if invalid data entered,asks user to enter again
if(cont==0)
{
System.out.println("\nError - incorrect entry");
System.out.println("\nPlease try again\n\n");
try
{
//wait 1500ms
Thread.sleep(1500);
}
catch(InterruptedException iesleep2)
{
System.out.println("Error - couldn't activate Sleep");
}
}
}//end of while(cont==0)
|
| public static void | main(java.lang.String[] args)
//create instance of cashpoint
cashpoint machine = new cashpoint();
while(true)
{
//calls object to read in account no. and pin no. of account user wants to query
machine.input_user_data();
option=0;
//while option doesn't equal return card,loop
while(option!=4)
{
//calls object to serach accounts file for specified account
machine.search_accounts();
if(found==1)
{
//displays main menu
machine.menu();
//process user request made from main menu
machine.process_request();
//saves changed accounts file
machine.save_bank_data();
}
}//end of if option!=4
}//end of while(true)
|
| public void | menu()
option = 0;
//while option is not equal to 1,2,3 or 4 loop
while(option!=1 && option!=2 && option!=3 && option!=4)
{
//display menu
System.out.println("\n---------------------------------");
System.out.println("Main Menu");
System.out.println("---------------------------------");
System.out.println("1 - Display Balance");
System.out.println("2 - Withdrawal");
System.out.println("3 - Deposit");
System.out.println("4 - Return Card");
System.out.println("\nPlease Enter option - ");
try
{
//read users choice from user input
String choice = userin.readLine();
try
{
//convert string to integer for validating
option = Integer.valueOf(choice).intValue();
}
//caught if option entered is not an integer
catch(NumberFormatException nfe2)
{
option = 0;
}
}
//caught if choice could not be read in,terminates program
catch(IOException ex4)
{
System.out.println("Error - Could not read option no.");
System.out.println("Exiting");
System.exit(0);
}
//displays invaild option message if option not equal to 1,2,3 or 4
if(option!=1 && option!=2 && option!=3 && option!=4)
{
System.out.println("\nInvalid selection - please try again!");
try
{
//wait 1500ms
Thread.sleep(1500);
}
catch(InterruptedException iesleep)
{
System.out.println("Error - couldn't activate Sleep");
}
}
}//end of while option !=1,2,3,4
|
| public void | process_request()
float user_amount = -1;
//process user query
switch(option)
{
//process balance rquest
case 1:
{
Locale local = new Locale("en","US");
//display balance for given account no.
System.out.println("\nBalance = " + NumberFormat.getCurrencyInstance().format(bal_record[locate]));
break;
}
//process withdraw transaction
case 2:
{
//while user amount not vaild loop
while(user_amount<0)
{
try
{
System.out.println("\nEnter Amount to Withdraw - ");
try
{
//read amount user wants to withdraw from user input
user_amount = Float.valueOf(userin.readLine()).floatValue();
}
//caught if amount could not be read
catch(IOException ex5)
{
System.out.println("Error - Could not read amount to withdraw");
user_amount = -1;
}
}
//caught if user amount entered is invalid type
catch(NumberFormatException nfe3)
{
user_amount = -1;
}
if(user_amount<0)
{
System.out.println("Invalid amount - please re-enter");
}
}//end of while
//if amount requesed is greater than balance in account, then fail transaction
if(user_amount > bal_record[locate])
{
System.out.println("\nWithdraw transaction failed - due to funds unavailable");
}
//else update balance if amount greater than 0
else if(user_amount > 0)
{
bal_record[locate] = bal_record[locate] - user_amount;
System.out.println("\nWithdrawal Transaction Complete\n");
}
break;
}
//process deposit request
case 3:
{
//while amount entered invaild loop
while(user_amount<0)
{
System.out.println("\nEnter Amount to Deposit - ");
try
{
try
{
//read in amount to deposit from user input
user_amount = Float.valueOf(userin.readLine()).floatValue();
}
//caught if user amount could not be read
catch(IOException ex6)
{
System.out.println("Error - Could not read amount to deposit");
user_amount=-1;
}
}
//caught if user amount not valid type
catch(NumberFormatException nfe4)
{
user_amount=-1;
}
//if amount less than zero do not process
if(user_amount < 0)
{
System.out.println("\nIncorrect amount entered - Please re-enter");
}
//else update balance if user amount greater than 0
else if(user_amount>0)
{
bal_record[locate] = bal_record[locate] + user_amount;
System.out.println("\nDeposit Transaction Complete\n");
}
}
break;
}
//process user end session
case 4 :
{
System.out.println("\nPlease Take your Card\n");
break;
}
}//end of switch
try
{
//wait 1500ms
Thread.sleep(1500);
}
catch(InterruptedException ie1)
{
System.out.println("Error - couldn't activate Sleep");
}
|
| public void | save_bank_data()
int i =0;
try
{
//create output stream to write data to bank accounts file
PrintWriter accdat2= new PrintWriter(new BufferedWriter(new FileWriter("bank.dat")));
//write all accounts in array into bank.dat
for(i=0;i<no_of_accounts;i++)
{
accdat2.write(accno_record[i] + " " + pinno_record[i] + " " + bal_record[i]+"\n");
}
//close accounts file
accdat2.close();
}
//caught if could not write accounts data to file,terminates program
catch(IOException ex2)
{
System.out.println("\nError writing to file");
System.out.println("Exiting........");
System.exit(0);
}
|
| public void | search_accounts()
int i = 0;
locate = 0;
found = 0;
//find account no. specified,found=0 if account no. doesn't exist
for(i=0;i<no_of_accounts;i++)
{
if(acc_no == accno_record[i])
{
locate = i;
found = 1;
break;
}
}
//if pin is doesn't match
if(pin_no != pinno_record[locate])
{
found = 0;
//display incorrect pin message
System.out.println("\nIncorrect PIN Entered! - Please try again");
System.out.println("\n\n");
option=4;
try
{
//wait for 1500ms
Thread.sleep(1500);
}
catch(InterruptedException ie2)
{
System.out.println("Error - couldn't activate Sleep");
}
}
|
