Develop Reference

Doesn't insert csv file records in java (jdbc)

I have an error when my CSVLoader file does not insert the data in my database, I get this in my console
FieldName (UploadDownloadFileServlet) = fileName
FileName (UploadDownloadFileServlet) = prueba2.csv
ContentType (UploadDownloadFileServlet) = application/vnd.ms-excel
Size in bytes (UploadDownloadFileServlet) = 47
Absolute Path at server (UploadDownloadFileServlet) = C:\Users\SISTEMAS\workspaceEclipse.metadata.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\SAC-sin-impresion\uploadedCsvFiles\prueba2.csv
Query: INSERT INTO MATRICULA(C:UsersSISTEMASworkspaceEclipse.metadata.pluginsorg.eclipse.wst.server.coretmp0wtpwebappsSAC-sin-impresionuploadedCsvFilesprueba2.csv) VALUES(?)
[CSVLoader]: 0 records loaded into MATRICULA DB table
THIS IS MY CODE:
public void loadCSV(InputStream csvFile, String tableName,
boolean truncateBeforeLoad) throws Exception {
CSVReader csvReader = null;
if(null == this.connection) {
throw new Exception("Not a valid connection.");
}
try {
/* Modified by rammar.
*
* I was having issues with the CSVReader using the "\" to escape characters.
* A MySQL CSV file contains quote-enclosed fields and non-quote-enclosed NULL
* values written as "\N". The CSVReader was removing the "\". To detect "\N"
* I must remove the escape character, and the only character you can replace
* it with that you are pretty much guaranteed will not be used to escape
* text is '\0'.
* I read this on:
* http://stackoverflow.com/questions/6008395/opencsv-in-java-ignores-backslash-in-a-field-value
* based on:
* http://sourceforge.net/p/opencsv/support-requests/5/
*/
// PREVIOUS VERSION: csvReader = new CSVReader(new FileReader(csvFile), this.seprator);
csvReader = new CSVReader(new InputStreamReader(csvFile), this.seprator, '"', '\0');
} catch (Exception e) {
e.printStackTrace();
throw new Exception("Error occured while executing file. "
+ e.getMessage());
}
String[] headerRow = csvReader.readNext();
if (null == headerRow) {
throw new FileNotFoundException(
"No columns defined in given CSV file." +
"Please check the CSV file format.");
}
String questionmarks = StringUtils.repeat("?,", headerRow.length);
questionmarks = (String) questionmarks.subSequence(0, questionmarks
.length() - 1);
/* NOTE from Ron: Header column names must match SQL table fields */
String query = SQL_INSERT.replaceFirst(TABLE_REGEX, tableName);
query = query
.replaceFirst(KEYS_REGEX, StringUtils.join(headerRow, ","));
query = query.replaceFirst(VALUES_REGEX, questionmarks);
System.out.println("Query: " + query); // Modified by rammar to suppress output
String[] nextLine;
Connection con = null;
PreparedStatement ps = null;
try {
con = this.connection;
con.setAutoCommit(false);
ps = con.prepareStatement(query);
if(truncateBeforeLoad) {
//delete data from table before loading csv
con.createStatement().execute("DELETE FROM " + tableName);
}
final int batchSize = 1000;
int count = 0;
Date date = null;
while ((nextLine = csvReader.readNext()) != null) {
if (null != nextLine) {
int index = 1;
for (String string : nextLine) {
date = DateUtil.convertToDate(string);
if (null != date) {
ps.setDate(index++, new java.sql.Date(date
.getTime()));
} else {
/* Section modified by rammar to allow NULL values
* to be input into the DB. */
if (string.length() > 0 && !string.equals("\\N")) {
ps.setString(index++, string);
} else {
ps.setNull(index++, Types.VARCHAR);
//ps.setString(index++, null); // can use this syntax also - not sure which is better
}
}
}
ps.addBatch();
}
if (++count % batchSize == 0) {
ps.executeBatch();
}
}
ps.executeBatch(); // insert remaining records
System.out.println("[" + this.getClass().getSimpleName() + "]: " +
count + " records loaded into " + tableName + " DB table");
con.commit();
} catch (Exception e) {
con.rollback();
e.printStackTrace();
throw new Exception(
"Error occured while loading data from file to database."
+ e.getMessage());
} finally {
/*if (null != ps)
ps.close();
*/
/*if (null != con)
con.close();*/
csvReader.close();
}
}

Java CSVReader ignore commas in double quotes

I have a CSV file that I am having trouble parsing. I am using the opencsv library. Here is what my data looks like and what I am trying to achieve.
RPT_PE,CLASS,RPT_MKT,PROV_CTRCT,CENTER_NM,GK_TY,MBR_NM,MBR_PID
"20150801","NULL","33612","00083249P PCP602","JOE SMITH ARNP","NULL","FRANK, LUCAS E","50004655200"
The issue I am having is the member name ("FRANK, LUCAS E") is being split into two columns and the member name should be one. Again I'm using opencsv and a comma as the separator. Is there any way I can ignore the commas inside the double-quotes?
public void loadCSV(String csvFile, String tableName,
boolean truncateBeforeLoad) throws Exception {
CSVReader csvReader = null;
if (null == this.connection) {
throw new Exception("Not a valid connection.");
}
try {
csvReader = new CSVReader(new FileReader(csvFile), this.seprator);
} catch (Exception e) {
e.printStackTrace();
throw new Exception("Error occured while executing file. "
+ e.getMessage());
}
String[] headerRow = csvReader.readNext();
if (null == headerRow) {
throw new FileNotFoundException(
"No columns defined in given CSV file."
+ "Please check the CSV file format.");
}
String questionmarks = StringUtils.repeat("?,", headerRow.length);
questionmarks = (String) questionmarks.subSequence(0, questionmarks
.length() - 1);
String query = SQL_INSERT.replaceFirst(TABLE_REGEX, tableName);
System.out.println("Base Query: " + query);
String headerRowMod = Arrays.toString(headerRow).replaceAll(", ]", "]");
String[] strArray = headerRowMod.split(",");
query = query
.replaceFirst(KEYS_REGEX, StringUtils.join(strArray, ","));
System.out.println("Add Headers: " + query);
query = query.replaceFirst(VALUES_REGEX, questionmarks);
System.out.println("Add questionmarks: " + query);
String[] nextLine;
Connection con = null;
PreparedStatement ps = null;
try {
con = this.connection;
con.setAutoCommit(false);
ps = con.prepareStatement(query);
if (truncateBeforeLoad) {
//delete data from table before loading csv
con.createStatement().execute("DELETE FROM " + tableName);
}
final int batchSize = 1000;
int count = 0;
Date date = null;
while ((nextLine = csvReader.readNext()) != null) {
System.out.println("Next Line: " + Arrays.toString(nextLine));
if (null != nextLine) {
int index = 1;
for (String string : nextLine) {
date = DateUtil.convertToDate(string);
if (null != date) {
ps.setDate(index++, new java.sql.Date(date
.getTime()));
} else {
ps.setString(index++, string);
}
}
ps.addBatch();
}
if (++count % batchSize == 0) {
ps.executeBatch();
}
}
ps.executeBatch(); // insert remaining records
con.commit();
} catch (SQLException | IOException e) {
con.rollback();
e.printStackTrace();
throw new Exception(
"Error occured while loading data from file to database."
+ e.getMessage());
} finally {
if (null != ps) {
ps.close();
}
if (null != con) {
con.close();
}
csvReader.close();
}
}
public char getSeprator() {
return seprator;
}
public void setSeprator(char seprator) {
this.seprator = seprator;
}
public char getQuoteChar() {
return quoteChar;
}
public void setQuoteChar(char quoteChar) {
this.quoteChar = quoteChar;
}
}

Did you try the the following?
CSVReader reader = new CSVReader(new FileReader("yourfile.csv"), ',');
I wrote a following program and it works for me, I got the following result:
[20150801] [NULL] [33612] [00083249P PCP602] [JOE SMITH ARNP] [NULL]
[FRANK, LUCAS E] [50004655200]
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import au.com.bytecode.opencsv.CSVReader;
public class CVSTest {
/**
* #param args
*/
public static void main(String[] args) {
CSVReader reader = null;
try {
reader = new CSVReader(new FileReader(
"C:/Work/Dev/Projects/Pure_Test/Test/src/cvs"), ',');
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
String[] nextLine;
try {
while ((nextLine = reader.readNext()) != null) {
// nextLine[] is an array of values from the line
System.out.println("[" + nextLine[0] + "] [" + nextLine[1]
+ "] [" + nextLine[2] + "] [" + nextLine[3] + "] ["
+ nextLine[4] + "] [" + nextLine[5] + "] ["
+ nextLine[6] + "] [" + nextLine[7] + "]");
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

According to the documentation, you can supply custom separator and quote characters in the constructor, which should deal with it:
CSVReader(Reader reader, char separator, char quotechar)
Construct your reader with , as separator and " as quotechar.

It is simple to load your CSV as an SQL table into HSQLDB, then select rows from the table to insert into another database. HSQLDB handles commas inside quotes. You need to define your text source as "quoted". See this:
http://hsqldb.org/doc/2.0/guide/texttables-chapt.html

Your case should be handled out of the box with no special configuration required.
If you can't make it work, then just switch to uniVocity-parsers to do this for you - it's twice as fast in comparison to OpenCSV, requires much less code and is packed with features.
CsvParserSettings settings = new CsvParserSettings(); // you have many configuration options here - check the tutorial.
CsvParser parser = new CsvParser(settings);
List<String[]> allRows = parser.parseAll(new FileReader(new File("C:/Work/Dev/Projects/Pure_Test/Test/src/cvs")));
Disclosure: I am the author of this library. It's open-source and free (Apache V2.0 license).

Syntax error on token "<=", invalid AssignmentOperator

I'm attempting to fix a plugin I wrote a long time ago for Craftbukkit, but I'm stumped on one section. I've searched Google with little luck, and I've asked other Java developers only to hear that I shouldn't be using a for loop because it's rather basic, or that I'm using a boolean expression in the wrong place. Nobody will tell me how I can fix this, so I'll know for future references - Below is the class that throws the error:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.util.Hashtable;
import java.util.logging.Logger;
import org.bukkit.configuration.file.FileConfiguration;
public class Database
{
private static String host = null;
private static String port = null;
private static String database = null;
private static String table = null;
private static String username = null;
private static String password = null;
private static String colUsername = null;
private static Logger logger = null;
public static void init(FileConfiguration config, Logger log)
{
logger = log;
host = config.getString("DBHost");
port = config.getString("DBPort");
database = config.getString("DBName");
table = config.getString("DBTable");
username = config.getString("DBUser");
password = config.getString("DBPass");
colUsername = config.getString("ColUsername");
}
public static Hashtable<String, Object> getUserInfo(String user)
{
String url = "jdbc:mysql://" + host + ":" + port + "/" + database;
String query = "SELECT * FROM " + table + " WHERE " + colUsername + " = ?";
Connection connect = null;
PreparedStatement stmt = null;
ResultSet result = null;
Hashtable<String, Object> userInfo = new Hashtable<String, Object>();
try
{
Class.forName("com.mysql.jdbc.Driver");
connect = DriverManager.getConnection(url, username, password);
stmt = connect.prepareStatement(query);
stmt.setString(1, user);
result = stmt.executeQuery();
ResultSetMetaData rsmd;
int i;
for (; result.next(); i <= rsmd.getColumnCount())
{
rsmd = result.getMetaData();
i = 1; continue;
userInfo.put(rsmd.getColumnName(i), result.getObject(i));i++;
}
return userInfo;
}
catch (ClassNotFoundException e)
{
logger.warning("Unable to load driver. Using default behaviour.");
e.printStackTrace();
}
catch (SQLException e)
{
logger.warning("Database error. Using default behaviour.");
e.printStackTrace();
}
finally
{
if (result != null) {
try
{
result.close();
}
catch (SQLException e)
{
e.printStackTrace();
}
}
if (stmt != null) {
try
{
stmt.close();
}
catch (SQLException e)
{
e.printStackTrace();
}
}
if (connect != null) {
try
{
connect.close();
}
catch (SQLException e)
{
e.printStackTrace();
}
}
}
return null;
}
}
The error I encounter is in this part of the code:
for (; result.next(); i <= rsmd.getColumnCount())
{
rsmd = result.getMetaData();
i = 1; continue;
userInfo.put(rsmd.getColumnName(i), result.getObject(i));i++;
}
Where I get the error "Syntax error on token "<=", invalid AssignmentOperator"
How should I go about fixing this, and how can I improve it?
EDIT #1:
This is my updated code, according to Jon's answer:
try
{
Class.forName("com.mysql.jdbc.Driver");
connect = DriverManager.getConnection(url, username, password);
stmt = connect.prepareStatement(query);
stmt.setString(1, user);
result = stmt.executeQuery();
ResultSetMetaData rsmd = result.getMetaData();
while (result.next()) {
for (int i = 1; i <= rsmd.getColumnCount(); i++) {
rsmd = result.getMetaData();
userInfo.put(rsmd.getColumnName(i), result.getObject(i));i++;
}
}
return userInfo;
}

Basically this is the wrong way round:
for (; result.next(); i <= rsmd.getColumnCount())
It should possibly be:
for (; i <= rsmd.getColumnCount(); result.next())
Although more likely, you actually want:
while (result.next()) {
// This outer loop is executed once per row
for (int i = 1; i <= rsmd.getColumnCount(); i++) {
// This inner loop is executed once per column (per row, as it's
// within the outer loop)
}
}
Having said that, you're not even initializing rsmd, which doesn't help. I suspect you may want to call ResultSet.getMetadata(), e.g.
rsmd = result.getMetadata();
For reference, the three parts of the for statement declaration are as follows:
The first part (empty in your case) is performed once, as initialization
The second part is a condition to check on each iteration; the loop ends when the condition evaluates to false
The third part is a statement is a step to take at the end of each iteration
See section 14.14.1 of the JLS or the for statement part of the Java tutorial for more details.

This won't work in the last part of a for loop:
i <= rsmd.getColumnCount()
Perhaps you meant this?
for (; i <= rsmd.getColumnCount(); result.next())

Basic syntax of a for-loop:
for (any; boolean; any)
your's is
for (any; any; boolean)
Just change the order.

Parsing empty cells in csv file and storing into mysql

I have a csv file which has few cells in some columns empty.Modifying the csv file is not an option as it has around 50k total records.
Whenever I am executing below code it is throwing error as "Incorrect integer value: '' for column 'ParentId' at row 1".My database table has null value as yes for column 'ParentID'.But still it is throwing error.How can I edit this code so that it fills in correct values without giving error?
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.util.Date;
import org.apache.commons.lang.StringUtils;
import au.com.bytecode.opencsv.CSVReader;
public class CSVLoader {
static int count;
private static final
//String SQL_INSERT = "INSERT INTO ${table}(${keys}) VALUES(${values})";
String SQL_INSERT = "INSERT INTO ${table} VALUES(${values})";
private static final String TABLE_REGEX = "\\$\\{table\\}";
//private static final String KEYS_REGEX = "\\$\\{keys\\}";
private static final String VALUES_REGEX = "\\$\\{values\\}";
private Connection connection;
private char seprator;
/**
* Public constructor to build CSVLoader object with
* Connection details. The connection is closed on success
* or failure.
* #param connection
*/
public CSVLoader(Connection connection) {
this.connection = connection;
//Set default separator
this.seprator = ',';
}
/**
* Parse CSV file using OpenCSV library and load in
* given database table.
* #param csvFile Input CSV file
* #param tableName Database table name to import data
* #param truncateBeforeLoad Truncate the table before inserting
* new records.
* #throws Exception
*/
public void loadCSV(String csvFile, String tableName,
boolean truncateBeforeLoad) throws Exception {
CSVReader csvReader = null;
if(null == this.connection) {
throw new Exception("Not a valid connection.");
}
try {
csvReader = new CSVReader(new FileReader(csvFile), this.seprator);
} catch (Exception e) {
e.printStackTrace();
throw new Exception("Error occured while executing file. "
+ e.getMessage());
}
//String[] headerRow = csvReader.readNext();
String[] headerRow = csvReader.readNext();
count++;
if (null == headerRow) {
throw new FileNotFoundException(
"No columns defined in given CSV file." +
"Please check the CSV file format.");
}
/*String questionmarks = StringUtils.repeat("?,", headerRow.length);
System.out.println(headerRow.length);
questionmarks = (String) questionmarks.subSequence(0, questionmarks
.length() - 1);
System.out.println(SQL_INSERT);
String query = SQL_INSERT.replaceFirst(TABLE_REGEX, tableName);
//query = query
// .replaceFirst(KEYS_REGEX, StringUtils.join(headerRow, ","));
query = query.replaceFirst(VALUES_REGEX, questionmarks);
System.out.println("Query: " + query);
*/
//Stirng str1 = "insert into posts values(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)"
String[] nextLine;
Connection con = null;
PreparedStatement ps = null;
try {
con = this.connection;
con.setAutoCommit(false);
ps = con.prepareStatement("insert into posts (Id,PostTypeId,AcceptedAnswerId,ParentId,CreationDate,Score,ViewCount,Body,OwnerUserId,OwnerDisplayName,LastEditorUserId,LastEditorDisplayName,LastEditDate,LastActivityDate,Title,Tags,AnswerCount,CommentCount,FavoriteCount,ClosedDate,CommunityOwnedDate,RowNum) values(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)");
if(truncateBeforeLoad) {
//delete data from table before loading csv
con.createStatement().execute("DELETE FROM " + tableName);
}
final int batchSize = 1000;
int count = 0;
Date date = null;
while ((nextLine = csvReader.readNext()) != null) {
if (null != nextLine) {
int index = 1;
for (String string : nextLine) {
date = DateUtil.convertToDate(string);
if (null != date) {
ps.setDate(index++, new java.sql.Date(date
.getTime()));
} else {
ps.setString(index++, string);
}
}
System.out.println(count);
ps.addBatch();
System.out.println(count);
}
if (++count % batchSize == 0) {
System.out.println(count);
ps.executeBatch();
}
}
ps.executeBatch(); // insert remaining records
con.commit();
} catch (Exception e) {
con.rollback();
e.printStackTrace();
throw new Exception(
"Error occured while loading data from file to database."
+ e.getMessage());
} finally {
if (null != ps)
ps.close();
if (null != con)
con.close();
csvReader.close();
}
}
public char getSeprator() {
return seprator;
}
public void setSeprator(char seprator) {
this.seprator = seprator;
}
}

It might be the case where int column is actually having blank spaces, in such case you can place manual check as below and still go ahead. Hope this answers your doubt.
// check if value is null or blank spaces
if(certain_value== null || certain.value.trim().length==0){
ps.setNull(4, java.sql.Types.INTEGER); // This will set null value for int type
}

connect client side java program to access database

I am making a practice program using java and an access database.
the program is an ultimate tictactoe board and the databse is meant for keeping track of the names of the players and their scores.
the trouble i am having is that i keep getting these errors.
Exception in thread "main" java.lang.NullPointerException
at AccessDatabaseConnection.getName(AccessDatabaseConnection.java:39)
at ultimate.<init>(ultimate.java:39)
at ultimate.main(ultimate.java:82)
with further research i also found this:
[Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
here is my code. the math is a little unfinished in the sql statements but im not really worried about that yet. i need to get this connection between the program and the database.
here is the area of code in my constructor for the program that connects to the accessdatabaseconnections class:
AccessDatabaseConnection DB = new AccessDatabaseConnection();
Font f = new Font("Dialog", Font.BOLD, 80);
public ultimate() {
super("Testing Buttons");
String dbname = DB.getName();
String wins = DB.getWins();
String losses = DB.getLosses();
Container container = getContentPane();
container.setLayout(null);
ButtonHandler handler = new ButtonHandler();
for (int j = 0; j < 9; j++) {// set the rows
x = 10;
for (int i = 0; i < 9; i++) {// set the columns
button[j][i] = new JButton();
container.add(button[j][i]);
button[j][i].setName(Integer.toString(j) + "_"
+ Integer.toString(i));
button[j][i].addActionListener(handler);
button[j][i].setSize(100, 100);
button[j][i].setVisible(true);
button[j][i].setFont(f);
button[j][i].setText(null);
if ((i > 2 && j < 3 && i < 6) || (j > 2 && j < 6 && i < 3)
|| (j > 2 && j < 6 && i < 9 && i > 5)
|| (j > 5 && j < 9 && i < 6 && i > 2)) {
button[j][i].setBackground(Color.LIGHT_GRAY);
} else {
button[j][i].setBackground(Color.WHITE);
}
button[j][i].setLocation(x, y);
x = x + 110;
}
y = y + 110;
}
setSize(1024, 1050);
setVisible(true);
container.setBackground(Color.BLACK);
}
public static void main(String args[]) {
ultimate application = new ultimate();
application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
PlayerOne = JOptionPane.showInputDialog("Player 1: Enter Your Name");
PlayerTwo = JOptionPane.showInputDialog("Player 2: Enter Your Name");
while(PlayerOne == PlayerTwo){
PlayerTwo = JOptionPane.showInputDialog("Player 2: Re-Enter Your Name (Cannot be the same!)");
}
}
and here is the code for accessing the database:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;
public class AccessDatabaseConnection {
public static Connection connect() {
Connection con;
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String database ="jdbc:odbc:Driver{Microsoft Access Driver (*.accdb)};DBQ=C:\\Users\\McKenzieC\\Documents\\tictactoeRecords.accdb;";
con = DriverManager.getConnection(database, "", "");
} catch (Exception ex) {
return null;
}
return con;
}
public void addData(String nameOne, int win, String nameTwo,int loss){
try {
Statement stmt = connect().createStatement();
stmt.executeQuery("INSERT INTO t_Records (Name, Wins) " +
"VALUES (" + nameOne + ", " + Integer.toString(win));
/*stmt.executeQuery("INSERT INTO t_Records (Name, Wins) " +
"VALUES (" + nameTwo + ", " + Integer.toString(loss));
+ ", " + Integer.toString(loss)*/
}
catch (SQLException ex) {
}
}
public String getName() {
try {
Statement stmt = connect().createStatement();
ResultSet rset = stmt.executeQuery("SELECT * FROM t_Records");
if (rset.next()) {
String name = rset.getString("Name");
return name;
}
} catch (SQLException ex) {
}
return null;
}
public String getWins() {
try {
Statement stmt = connect().createStatement();
ResultSet rset = stmt.executeQuery("SELECT * FROM t_Records");
if (rset.next()) {
String wins = rset.getString("Wins");
return wins;
}
} catch (SQLException ex) {
}
return null;
}
public String getLosses() {
try {
Statement stmt = connect().createStatement();
ResultSet rset = stmt.executeQuery("SELECT * FROM t_Records");
if (rset.next()) {
String losses = rset.getString("Losses");
return losses;
}
} catch (SQLException ex) {
}
return null;
}
public static void main(String[] args) {
}
}

I assume that you can't see the real error because you're hiding the real error:
Never do this:
catch (Exception ex) {
return null;
}
You can change for this at least (again not recommended but better than the above code):
catch (Exception ex) {
ex.printStackTrace();
return null;
}
//After this change the program will fail again but you will got a better error message
But you always must manage the Exception:
Print a error message
Put a log message (java logging, log4j and so on)
Deal with the error
Re-throw the exception
And son on

The statement...
String database ="jdbc:odbc:Driver{Microsoft Access Driver (*.accdb)};DBQ=C:\\Users\\McKenzieC\\Documents\\tictactoeRecords.accdb;";
...has two problems:
You are missing the equal sign (=) after the Driver keyword.
There is no ODBC driver named Microsoft Access Driver (*.accdb).
Try this instead:
String database ="jdbc:odbc:Driver={Microsoft Access Driver (*.mdb, *.accdb)};DBQ=C:\\Users\\McKenzieC\\Documents\\tictactoeRecords.accdb;";

Is Statement stmt equal null after connect().createStatement();? If yes, then stmt.executeQuery will cause null ptr exception.