Databases and Java

Question

I am almost finished with this program, but I am getting a strange error. Here is the assignment description: http://condor.depaul.edu/~jpetlick/extra/212/A07_212.html I would greatly appreciate any help. Thank you! (I know I eventually need to output this to files, but I currently left that out for debugging purposes.)
-------------Error Message------------------------
The balance of accounts prior to money transfers is:
Account Balance
1 $10,000.00
2 $10,000.00
3 $10,000.00
4 $10,000.00
5 $10,000.00
6 $10,000.00
7 $10,000.00
8 $10,000.00
9 $10,000.00
10 $10,000.00
Total $100,000.00
TranID From Balance to Balance
java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] Too few parameters. Expected 1.
-------------------Code----------------------
import java.sql.*;
import java.util.*;
import java.io.*;
import java.text.NumberFormat;
public class Transfer
public static void main(String[] args)
throws ClassNotFoundException, SQLException, IOException
String file = "Report.dat", file2 = "Log.dat", sql = "";
int sum = 0, trans = 1, accountWithdraw = 0, accountDeposit = 0, total = 0;
int randomAcctWithdraw = 0, randomAcctDepo = 0;
//-----Load database driver.
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
//-----File Writers
FileWriter fw = new FileWriter (file);
BufferedWriter bw = new BufferedWriter (fw);
PrintWriter outFile = new PrintWriter (bw);
FileWriter fw2 = new FileWriter (file2);
BufferedWriter bw2 = new BufferedWriter (fw2);
PrintWriter outFile2 = new PrintWriter (bw2);
NumberFormat money = NumberFormat.getCurrencyInstance();
try
//-----Create Database Connection object.
Connection c = DriverManager.getConnection("jdbc:odbc:Banking");
//-----Create Statement object.
Statement s = c.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);
s.execute("CREATE TABLE MyBank " + "(AccountNum Number, Balance Number)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "('1', 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "('2', 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "('3', 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "('4', 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "('5', 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "('6', 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "('7', 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "('8', 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "('9', 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "('10', 10000)");
String selection = "SELECT AccountNum, Balance FROM MyBank";
ResultSet r = s.executeQuery(selection);
System.out.println ("The balance of accounts prior to money transfers is:");
System.out.println ("\tAccount\t Balance");
while(r.next())
System.out.println("\t" + r.getInt(1) + "\t" + money.format(r.getInt(2)));
sum += r.getInt(2);
System.out.println("\tTotal\t" + money.format(sum));
System.out.println ("\nTranID\tFrom\tBalance\tto\tBalance");
r = s.executeQuery(selection);
r.first();
for (int i=0; i <= 1000; i++)
accountWithdraw = (int) ((Math.random() * 10) + 1);
accountDeposit = (int) ((Math.random() * 10) + 1);
r.first();
while(r.next())
while ( (accountWithdraw == r.getInt(1)) || (accountWithdraw == accountDeposit) )
accountWithdraw = (int) ((Math.random() * 10) + 1);
accountDeposit = (int) ((Math.random() * 10) + 1);
r.absolute(accountWithdraw);
s.executeUpdate("UPDATE MyBank SET Balance = " + (r.getInt(2) - 1000) + " WHERE AccountNum = " + accountWithdraw);
r = s.executeQuery(selection);
r.absolute(accountDeposit);
s.executeUpdate("UPDATE MyBank SET Balance = " + (r.getInt(2) + 1000) + " WHERE AccountNumber = " + accountDeposit);
System.out.print (trans + "\t" + accountWithdraw + "\t" + s.executeQuery("SELECT Balance FROM MyBank WHERE AccountNum = " + accountWithdraw) + "\t" + accountDeposit + "\t" + s.executeQuery("SELECT Balance FROM MyBank WHERE AccountNum = " + accountDeposit));
r.first();
trans++;
r.first();
System.out.println ("\nThe balance of accounts after money transfers is:");
System.out.println ("\tAccount\t Balance");
while (r.next())
System.out.println("\t" + r.getInt(1) + "\t" + money.format(r.getInt(2)));
total += r.getInt(2);
System.out.println ("\tTotal: " + money.format(total));
//-----Close Connections
c.close();
catch(SQLException err)
System.out.println (err);

Answer 1

Well I changed some thing and it seems as if I'm so close but I keep getting this error. The wierd thing is it doesn't always break there. Sometimes it breaks at 14 transactions, sometimes 85, all kinds of numbers. I can't figure that out. Thanks for all the help, i appreciate it.
The balance of accounts prior to money transfers is:
Account Balance
1 $10,000.00
2 $10,000.00
3 $10,000.00
4 $10,000.00
5 $10,000.00
6 $10,000.00
7 $10,000.00
8 $10,000.00
9 $10,000.00
10 $10,000.00
Total $100,000.00
TranID From Balance to Balance
1 8 9000 6 11000
2 3 9000 9 11000
3 7 9000 8 10000
4 10 9000 9 12000
5 1 9000 9 13000
6 4 9000 8 11000
7 8 10000 6 12000
8 5 9000 9 14000
9 7 8000 2 11000
10 3 8000 9 15000
11 9 14000 2 12000
12 8 9000 10 10000
13 4 8000 3 9000
14 8 8000 10 11000
15 3 8000 2 13000
16 10 10000 9 15000
17 5 8000 7 9000
18 9 14000 1 10000
19 3 7000 5 9000
20 9 13000 3 8000
21 3 7000 8 9000
22 8 8000 6 13000
23 7 8000 2 14000
24 3 6000 4 9000
25 1 9000 5 10000
26 8 7000 1 10000
27 4 8000 5 11000
java.sql.SQLException: No data found
at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:6287)
at sun.jdbc.odbc.JdbcOdbc.SQLGetDataInteger(JdbcOdbc.java:3211)
at sun.jdbc.odbc.JdbcOdbcResultSet.getDataInteger(JdbcOdbcResultSet.java:5434)
at sun.jdbc.odbc.JdbcOdbcResultSet.getInt(JdbcOdbcResultSet.java:571)
at Transfer.main(Transfer.java:76)
My altered code:
import java.sql.*;
import java.util.*;
import java.io.*;
import java.text.NumberFormat;
public class Transfer
public static void main(String[] args)
throws ClassNotFoundException, SQLException, IOException
String file = "Report.dat", file2 = "Log.dat", sql = "";
int sum = 0, trans = 1, accountWithdraw = 0, accountDeposit = 0, total = 0;
//-----Load database driver.
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
//-----File Writers
FileWriter fw = new FileWriter (file);
BufferedWriter bw = new BufferedWriter (fw);
PrintWriter outFile = new PrintWriter (bw);
FileWriter fw2 = new FileWriter (file2);
BufferedWriter bw2 = new BufferedWriter (fw2);
PrintWriter outFile2 = new PrintWriter (bw2);
NumberFormat money = NumberFormat.getCurrencyInstance();
try
//-----Create Database Connection object.
Connection c = DriverManager.getConnection("jdbc:odbc:Banking");
//-----Create Statement object.
Statement s = c.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);
s.execute("CREATE TABLE MyBank " + "(AccountNum Number, Balance Number)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "(1, 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "(2, 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "(3, 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "(4, 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "(5, 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "(6, 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "(7, 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "(8, 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "(9, 10000)");
s.executeUpdate("INSERT INTO MyBank VALUES " + "(10, 10000)");
String selection = "SELECT AccountNum, Balance FROM MyBank";
ResultSet r = s.executeQuery(selection);
System.out.println ("The balance of accounts prior to money transfers is:");
System.out.println ("\tAccount\t Balance");
while(r.next())
System.out.println("\t" + r.getInt(1) + "\t" + money.format(r.getInt(2)));
sum += r.getInt(2);
System.out.println("\tTotal\t" + money.format(sum));
System.out.println ("\nTranID\tFrom\tBalance\tto\tBalance");
r = s.executeQuery(selection);
r.first();
for (int i=0; i <= 1000; i++)
r.first();
while(r.next())
accountWithdraw = (int) ((Math.random() * 10) + 1);
accountDeposit = (int) ((Math.random() * 10) + 1);
while ( (accountWithdraw == r.getInt(1)) || (accountWithdraw == accountDeposit) )
accountWithdraw = (int) ((Math.random() * 10) + 1);
accountDeposit = (int) ((Math.random() * 10) + 1);
r.absolute(accountWithdraw);
s.executeUpdate("UPDATE MyBank SET Balance = " + (r.getInt(2) - 1000) + " WHERE AccountNum = " + accountWithdraw);
r = s.executeQuery(selection);
r.absolute(accountWithdraw);
System.out.print (trans + "\t" + accountWithdraw + "\t" + r.getInt(2) + "\t" + accountDeposit + "\t");
r.absolute(accountDeposit);
s.executeUpdate("UPDATE MyBank SET Balance = " + (r.getInt(2) + 1000) + " WHERE AccountNum = " + accountDeposit);
r = s.executeQuery(selection);
r.absolute(accountDeposit);
System.out.println (r.getInt(2));
r.first();
trans++;
r.first();
System.out.println ("\nThe balance of accounts after money transfers is:");
System.out.println ("\tAccount\t Balance");
while (r.next())
System.out.println("\t" + r.getInt(1) + "\t" + money.format(r.getInt(2)));
total += r.getInt(2);
System.out.println ("\tTotal: " + money.format(total));
//-----Close Connections
c.close();
catch(SQLException err)
err.printStackTrace(System.out);
}