Exeception in thread

[mike hew]

OK, I fix the three C's problem, ok I can't spell, lol.

Now I have no error's but when I excute the program I get this:

Big Bank: Monthly Checking Account Activity


----------- Account ----------- Beginning With- Ending Over- Credit Cd

Name Id Type Balance + Deposit - drawal - Fee = Balance draft Advance

Exception in thread "main" java.lang.NullPointerException

at CheckingAccountsTest.handleAccount(CheckingAccountsTest.java :103)

at CheckingAccountsTest.main(CheckingAccountsTest.java:56)


G:\ ~1>



The Pseudo code state's this
WHILE (myFile.getEofFound() IS FALSE)
A-1-2-09) DEFINE a String Array named myFields, and ASSIGN it the value myFile.getCsvRecordFieldArray()
A-1-2-10) IF (myFields[indexForAccountType].equals(CheckingAccount.getAccountType()))
A-1-2-11) INSTANTIATE a local variable named currentAccount of class CheckingAccount, passing the following arguments:
A-1-2-12) myFields[indexForAccountId], myFields[indexForFirstName], myFields[indexForLastName],
A-1-2-13) Double.parseDouble(myFields[indexForBalance])
A-1-2-14) CALL method handleAccount of this class, passing the following arguments: currentAccount, myFile, myFields
A-1-2-15) ASSIGN null TO currentAccount
A-1-2-16) ELSE
A-1-2-17) INSTANTIATE a local variable named currentAccount of class CheckingAccountPlus, passing the following arguments:
A-1-2-18) myFields[indexForAccountId], myFields[indexForFirstName], myFields[indexForLastName],
A-1-2-19) Double.parseDouble(myFields[indexForBalance])
A-1-2-20) CALL method handleAccount of this class, passing the following arguments: currentAccount, myFile, myFields
A-1-2-21) ASSIGN null TO currentAccount
A-1-2-22) END IF
A-1-2-23) END WHILE

WHILE (myFile.getEofFound() IS FALSE AND currentAccount.getAccountId().equals(myFields[indexForAccountId]))
A-1-3-07) IF (myFields[indexForRecordType].equals(recordTypeForDeposit))
A-1-3-08) CALL method handleDeposit with the following argument list: currentAccount,
A-1-3-09) Double.parseDouble(myFields[indexForDepositAmount]
A-1-3-10) ELSE
A-1-3-11) CALL method handleWithdrawal with the following argument list: currentAccount,
A-1-3-12) Double.parseDouble(myFields[indexForWithdrawalAmount]
A-1-3-13) END IF
A-1-3-14) CALL method myFile.readARecord, which reads the next deposit or withdrawal record, if any, for this customer
A-1-3-15) CALL method myFile.getCsvRecordFieldArray and ASSIGN its return value to myFields, a String array. This makes the value from the
A-1-3-16) fields in the record just read available for access as elements in the myFields string array
A-1-3-17) END WHILE
WHILE (myFile.getEofFound() IS FALSE AND currentAccount.getAccountId().equals(myFields[indexForAccountId]))
A-1-4-07) IF (myFields[indexForRecordType].equals(recordTypeForDeposit))
A-1-4-08) CALL method handleDeposit with the following argument list: currentAccount,
A-1-4-09) Double.parseDouble(myFields[indexForDeposit]
A-1-4-10) ELSE
A-1-4-11) CALL method handleWithdrawal with the following argument list: currentAccount,
A-1-4-12) Double.parseDouble(myFields[indexForWithdrawal]
A-1-4-13) END IF
A-1-4-14) CALL method myFile.readARecord, which reads the next deposit or withdrawal record, if any, for this customer
A-1-4-15) CALL method myFile.getCsvRecordFieldArray and ASSIGN its return value to myFields, a String array. This makes the value from the
A-1-4-16) fields in the record just read available for access as elements in the myFields string array
A-1-4-17) END WHILE

public class CheckingAccountsTest 
{
private static final int indexForAccountId = 0;
private static final int indexForAccountType = 2;
private static final int indexForBalance = 5;
private static final int indexForDepositAmount = 2;
private static final int indexForFirstName = 3;
private static final int indexForLastName = 4;
private static final int indexForRecordType = 1;
private static final int indexForWithdrawalAmount = 2;
private static final String recordTypeForDeposit = "CKD";
private static double sumOfBeginningBalances = 0.0;
private static double sumOfCreditCardAdvances = 0.0;
private static double sumOfDeposits = 0.0;
private static double sumOfEndingBalances = 0.0;
private static double sumOfFees = 0.0;
private static double sumOfOverdrafts = 0.0;
private static double sumOfWithdrawals = 0.0;
 

public static void main(String args[])
{
 
MyCsvFile myFile = new MyCsvFile("monthlyBankTransactions,v05.txt");

 
//display big bank title line
System.out.println("\nBig Bank: Monthly Checking Account Activity\n");
//display the first column heading line
System.out.println("----------- Account ----------- Beginning\t\t    With-\t\t   Ending\tOver-\tCredit Cd");
//display the second column heading line
System.out.println("     Name\t   Id    Type\t Balance   +   Deposit   -  drawal   -    Fee   =  Balance\tdraft\t Advance\n");
 
//Get 1st record from CSV file using method readARecord
myFile.readARecord();
 
while(myFile.getEofFound() == false)
{
 
//A-1-2-09)
String []myFields = myFile.getCsvRecordFieldArray();
//A-1-2-10)
if(myFields[indexForAccountType].equals(CheckingAccount.getAccountType())){
   CheckingAccount currentAccount = new CheckingAccount(myFields[indexForAccountId], 
   myFields[indexForFirstName], myFields[indexForLastName], Double.parseDouble(myFields[indexForBalance]));
   handleAccount(currentAccount, myFile, myFields);
   currentAccount = null;
   }
   else
   {
   CheckingAccountPlus currentAccount = new CheckingAccountPlus(myFields[indexForAccountId], 
   myFields[indexForFirstName], myFields[indexForLastName], Double.parseDouble(myFields[indexForBalance]));
   handleAccount(currentAccount, myFile, myFields);
   currentAccount = null;
 
   }//end if
 
}//end while
 
//DISPLAY the report-total line using the following arguments: �Report Totals�, sumOfBeginningBalances, 
//sumOfDeposits, sumOfWithdrawals, sumOfFees, sumOfEndingBalances, sumOfOverdrafts, sumOfCreditCardAdvances, �**�
System.out.printf("Report Totals", sumOfBeginningBalances,
sumOfDeposits, sumOfWithdrawals, sumOfFees, sumOfEndingBalances, sumOfOverdrafts, sumOfCreditCardAdvances, "**");
 
//DISPLAY the �The information in the above report� line with the following arguments:
// myFile.getCountOfRecords()
System.out.printf("The information in the above report is from the 17 records in the following file:",
myFile.getCountOfRecords());
 
//DISPLAY the �Path to file� line with the following arguments: myFile.getFilePath()
System.out.printf("Path to file:", myFile.getFilePath());
 
//DISPLAY the �Name of file� line with the following arguments: myFile.getFileName()
System.out.printf("Name of file:", myFile.getFileName());
 
//DISPLAY the �End of program� line
System.out.println("\nEnd of program");
 
}// end main method
 

//Exhibit A-1-3: Pseudo code for Overloaded Method handleAccount of Class CheckingAccountsTest
//This private static method has no return value, and has three parameters: currentAccount of type CheckingAccount, myFile of type MyCsvFile and myFields of type String array.
public static void handleAccount(CheckingAccount currentAccount, MyCsvFile myFile, String []myFields)
{
sumOfBeginningBalances += currentAccount.getBalance();
printBeginningBalance(currentAccount);
myFile.readARecord();
myFields = myFile.getCsvRecordFieldArray();

while (myFile.getEofFound() == false) 
{
  currentAccount.getAccountId().equals(myFields[indexForAccountId]);
if(myFields[indexForRecordType].equals(recordTypeForDeposit)){
    handleDeposit(currentAccount, Double.parseDouble(myFields[indexForDepositAmount]));
      }
      else
      {
      handleWithdrawal(currentAccount,Double.parseDouble(myFields[indexForWithdrawalAmount]));
 
  }//end if
 
myFile.readARecord();
myFields = myFile.getCsvRecordFieldArray();

}//end while
 
sumOfEndingBalances += currentAccount.getBalance();
printEndingBalance(currentAccount);
 
}//end Overloaded Method handleAccount method
 
//Exhibit A-1-4: Pseudo code for Overloaded Method handleAccount of Class CheckingAccountsTest
///This private static method has no return value, and has three parameters: currentAccount of type CheckingAccountPlus, myFile of type MyCsvFile and myFields of type String array.
public static void handleAccount(CheckingAccountPlus currentAccount, MyCsvFile myFile, String [] myFields)
{
sumOfBeginningBalances += currentAccount.getBalance();
printBeginningBalance(currentAccount);
myFile.readARecord();
myFields = myFile.getCsvRecordFieldArray();

while (myFile.getEofFound()==false)
{
currentAccount.getAccountId().equals (myFields[indexForAccountId]);
if(myFields[indexForRecordType].equals(recordTypeForDeposit)){
    handleDeposit(currentAccount, Double.parseDouble(myFields[indexForDepositAmount]));
      }
      else
      {
      handleWithdrawal(currentAccount,Double.parseDouble(myFields[indexForWithdrawalAmount]));
 
  }//end if
 
myFile.readARecord();
myFields = myFile.getCsvRecordFieldArray();

}//end while
 
sumOfEndingBalances += currentAccount.getBalance();
printEndingBalance(currentAccount);
 
}//end Overloaded Method handleAccount method
 
//Exhibit A-1-5: Pseudo code for Overloaded Method handleDeposit Method of
//Class CheckingAccountsTest
private static void handleDeposit(CheckingAccount currentAccount, double amount)
{
sumOfDeposits += amount;
currentAccount.makeDeposit(amount);
System.out.printf("$,%.2f", amount);
}

//Exhibit A-1-6: Pseudo code for Overloaded Method handleDeposit Method of
//Class CheckingAccountsTest
private static void handleDeposit(CheckingAccountPlus currentAccount, double amount)
{
sumOfDeposits += amount;
currentAccount.makeDeposit(amount);
System.out.printf("$,%.2f", amount);
}

// A-1-7: Pseudo code for Overloaded Method handleWithdrawal Method of
//Class CheckingAccountsTest
//This private static method has no return value, and has two parameters: currentAccount of type CheckingAccount and amount of type double.
private static void handleWithdrawal(CheckingAccount currentAccount, double amount)
{
if (currentAccount.makeWithdrawal(amount) == true){
sumOfWithdrawals += amount;
System.out.printf("$,%.2f", amount);
}else{
double overdraftFee = currentAccount.getOverdraftFee();
sumOfFees += overdraftFee;
sumOfOverdrafts += amount;
System.out.printf("$,%.2f",overdraftFee, amount);

}//end if

}//end handleWithdrawal method
 
//Exhibit A-1-8: Pseudo code for Overloaded Method handleWithdrawal Method of
//Class CheckingAccountsTest
private static void handleWithdrawal(CheckingAccountPlus currentAccount, double amount)
{
if (currentAccount.makeWithdrawal(amount) == true){
sumOfWithdrawals += amount;
System.out.printf("$,%.2f",amount);
}else{
double creditCardAdvance = currentAccount.getCreditCardAdvance();
sumOfCreditCardAdvances += creditCardAdvance;
sumOfWithdrawals += currentAccount.getActualWithdrawal();
System.out.printf("$,%.2f",currentAccount.getActualWithdrawal(),creditCardAdvance);

}//end if

}//end CheckingAccountPlus handleWithdrawal method

//This private static method has no return value, and has one parameter: currentAccount of type CheckingAccount. 
private static void printBeginningBalance(CheckingAccount currentAccount)
{
System.out.printf("",
currentAccount, currentAccount.getAccountId(), CheckingAccount.getAccountType(), currentAccount.getBalance());
}

//this private static method has no return value, and has one parameter: currentAccount of type CheckingAccountPlus.
private static void printBeginningBalance(CheckingAccountPlus currentAccount)
{
System.out.printf("",
currentAccount, currentAccount.getAccountId(), CheckingAccountPlus.getAccountType(), currentAccount.getBalance());
}
//Exhibit A-1-11: Pseudo code for Overloaded Method printEndingBalance of
//class CheckingAccountsTest
private static void printEndingBalance(CheckingAccount currentAccount)
{
System.out.printf("Account Totals", currentAccount.getAccountId(), CheckingAccount.getAccountType(),
currentAccount.getBeginningBalance(), currentAccount.getDeposits(), currentAccount.getWithdrawals(), 
currentAccount.getFees(), currentAccount.getBalance(), currentAccount.getOverdrafts(), " *");
}

//Exhibit A-1-12: Pseudo code for Overloaded Method printEndingBalance of
//Class CheckingAccountsTest
private static void printEndingBalance(CheckingAccountPlus currentAccount)
{
System.out.printf("Account Totals", currentAccount.getAccountId(), CheckingAccount.getAccountType(),
currentAccount.getBeginningBalance(), currentAccount.getDeposits(), currentAccount.getWithdrawals(),
currentAccount.getBalance(), currentAccount.getSumOfCreditCardAdvances(), " *");
}


}//end class CheckingAccountsTestt

[pascal betz]

Hi

i did neither read your code nor the pseudocode... it's just too much :-)

But did you investigate the Exception message a little further ?

Exception in thread "main" java.lang.NullPointerException

at CheckingAccountsTest.handleAccount(CheckingAccountsTest.java :103)

Means that a NullPointerException (often called a NPE) occured. This happend on Line 103 of the CheckingAccountsTest.java file.

A NPE occurs when you try to invoke a method or access a field on a reference which is null:

e.g.

  
 String s = "";
if (someCondition) {
  s = null;
}
 
System.out.println("Size of string: " + s.length());
 

SO whenever you run this program and the "someCondition" holds true you'll get a NPE.
Now check your code, especialy what you do on line 103 and make sure this piece of code is not executed when the reference is null OR make sure the reference is never null (depends on your program what the right solution would be)

pascal

[Trupti Mehta]

Firstly I would say, pascalbetz have made you understand what is the Exception & what does it stand for.

As the code is very big, its difficult to figure out line #'s. Your mail error point seems to be in line 103 which is called from line 56. I believe its somewhere in myFile.readARecord() or handleAccount(currentAccount, myFile, myFields); OR String []myFields = myFile.getCsvRecordFieldArray(); - the array might not be filled properly or any index that you are accessing in if() is null. To figure out, which line is creatng the problem, write a (SOP) i.e. System.out.println("Read Record"); SOP("Gof Fields");, SOP("Created currentAccount") such message after readARecord(), getCsv...() & before calling handleAccount(). This will help you identify & also confirm which line is causing the error or is run successfully. The error can also be while creating currentAccount object.

Once you know, which line is creating NullPointerException, you may also know the reason behind that & thus solve your problem. If still, you need any help, inform us. We are here to help you out.


Trupti

[Joanne Neal]

Don't post the same question in multiple forums. It wastes people's time answering it in one when it has already been answered in the other.