I'm trying to authenticate a user (login) in java using MySQL database. I want to be able to do this in the console. This is what i have so far: My main class-
import java.util.Scanner;
public class main {
public static void main(String args[]){
if (args.length < 2)
return;
login meth = new login();
Scanner in = new Scanner(System.in);
String username;
String password;
System.out.println("");
System.out.println("Username: ");
username = in.next();
System.out.println("2. Account Holder");
password = in.next();
System.out.println("");
meth.loginDetails(username, password);
login checker = new login();
boolean rc = checker.loginDetails(args[0], args[1]);
System.out.println("The result is: " + Boolean.toString(rc));
in.close();
}
}
And this is my class where i attempt to connect to the database and query it.
import java.sql.*;
public class login {
public void databaseConnection(){ //swapping index a and index b around
try {
Class.forName("com.mysql.jdbc.Driver");
Connection conn = null;
conn = DriverManager.getConnection("jdbc:mysql://localhost/loginTest","root", "");
System.out.println("Database is connected !");
conn.close();
}
catch(Exception e){
System.out.println("Do not connect to DB - Error:"+e);
}
}
static final String CONN_URL = "jdbc:mysql://localhost/loginTest";
static final String DB_USER = "root";
static final String DB_PASSWORD = "";
public boolean loginDetails(String accountNumber, String password){
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
boolean passwdOK = false;
try {
// Establish the connection.
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
con = DriverManager.getConnection(CONN_URL, DB_USER, DB_PASSWORD);
// Create and execute an SQL statement
String sqlst = "SELECT Password FROM customer " +
" WHERE Account Number = '" + accountNumber + "'";
stmt = con.createStatement();
rs = stmt.executeQuery(sqlst);
// Check the return data
if (rs.next()) {
String passwdSaved = rs.getString(1).trim();
if (passwdSaved.equals(password.trim()))
passwdOK = true;
}
rs.close();
stmt.close();
}
catch (Exception e) {
e.printStackTrace();
}
finally {
if (con != null) try { con.close(); } catch(Exception e) {}
}
return passwdOK;
}
}
My database is called Customer and the separate columns are called Account Number, Password.
At the moment when i run the program it gets instantly terminated. Without showing any of the print lines.
So my question is how do i get a result true or false, that the user name and password is a match. And if it was false, let them retry and if its true load a switch menu?
First of all change
boolean rc = checker.loginDetails(args[0], args[1]);
to
boolean rc = checker.loginDetails(username, password);
If you are not running this program with arguments then args[0] and args[1] will throw ArrayIndexOutOfBoundException
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I have this code for searching in the MySQL data table by id, but when I run the program it is giving me this error (Output : "Column 'Mart' Not Found"). I'm using JTextFiled to ask the user to enter the id that want to search for.
public void actionPerformed(ActionEvent event) {
if(event.getSource()== btn) {
try {
Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);
PreparedStatement st = connection.prepareStatement("Select ID,user_name_1,password FROM Admin Where ID = ?");
int id = Integer.parseInt(text.getText());
st.setInt(1, id);
ResultSet rs = st.executeQuery();
if(rs.next()==false) {
JOptionPane.showMessageDialog(null, "The ID Not Found!!");
}
else {
String user = rs.getString("user_name_1");
text2.setText(rs.getString(user));
String pass = rs.getString("password");
text3.setText(rs.getString(pass));
}
}
catch (Exception e) {
System.out.print(e.getMessage());
}
}
}
Check if your column names are the same as the ones in the Database
Check if your connection string is connecting to the correct database
Ensure Database Driver is added
Try this:
public class DatabaseClass {
private String url = "YOUR URL";
private String username = "YOUR USERNAME";
private String password = "YOUR PASSWORD";
private static DatabaseClass theDB = new DatabaseClass();
private Connection c;
private DatabaseClass() {
try {
Class.forName("com.mysql.jdbc.Driver");
c = DriverManager.getConnection(url, username, password);
} catch (Exception ex) {
System.out.println("Error Connection: " + ex);
}
}
public Connection getC() {
return this.c;
}
public static DatabaseClass getInstance() {
return theDB;
}
}
And then, the click event:
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
try {
HashMap<Integer, String> data = new HashMap<>();
int id = Integer.parseInt(jTextField1.getText());
Connection c = DatabaseClass.getInstance().getC();
PreparedStatement s = c.prepareStatement("select * from yourTable where ID = ?");
s.setInt(1, id);
ResultSet theResult = s.executeQuery();
while (theResult.next()) {
int yourID = theResult.getInt("ID");
String yourData = theResult.getString("Email_Address");
data.put(yourID, yourData);
}
for (HashMap.Entry theEntry : data.entrySet()) {
jTextArea1.append(String.valueOf(theEntry.getKey()) + " " + theEntry.getValue() + "\n");
}
} catch (Exception ex) {
System.out.println("Error: " + ex);
}
}
Ideally this should work, but replace the query with your query and the connection string with yours.
I am trying to make a simple login form. Every thing is working fine, connection is established, query is executed but ResultSet is still empty so always getting redirected to fail.jsp. No error no warning at all.
Servlet code:
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String name = request.getParameter("name");
String password = request.getParameter("password");
modelclass md = new modelclass();
daoclass dao = new daoclass();
md.setName(name);
md.setPassword(password);
System.out.println("this just before the sql query on the main servlet page");
String sql = "Select * from USERADD where name = ? and password= ?";
String result = dao.guser(md, sql);
if (result.equals("success")) {
response.sendRedirect("welcome.jsp");
} else {
response.sendRedirect("fail.jsp");
}
}
This is the DAO class which makes connection.
Data Access code(dao.java):
public class daoclass {
public static String username = "NickNeo";
public static String password = "123123";
public static String driver = "com.ibm.db2.jcc.DB2Driver";
public static String url = "jdbc:db2://localhost:50000/CITYLIFE";
public static Connection con = null;
public static PreparedStatement ps = null;
static {
try {
Class.forName(driver);
System.out.println("before connection");
con = DriverManager.getConnection(url, username, password);
System.out.println("Connection Successfullll......!!!!!!");
} catch(Exception e) {
e.printStackTrace();
}
}
public String guser(modelclass obj, String sql) {
try {
System.out.println("entry into try block");
ps=con.prepareStatement(sql);
ps.setString(1, obj.getName());
ps.setString(2, obj.getPassword());
System.out.println("before query");
ResultSet rs = ps.executeQuery();
System.out.println("query executed");
int i = 0;
while(rs.next()) {
System.out.println("entered into while loop");
++i;
}
if (i >= 1) {
return "success";
} else {
System.out.println("this is inside else of while block");
return "fail";
}
} catch(Exception e) {
e.printStackTrace();
}
System.out.println("this is the most outer fail statement");
return "fail";
}
}
the rs is always empty. tried many things but still getting rs as empty. please help
The below code always generates a NullPointerException error.
The connection:
Connection con;
java.sql.PreparedStatement st;
public void Connect()
{
try{
Class.forName("com.mysql.jdbc.Driver").newInstance();
String user = "root";
String password = "";
con = DriverManager.getConnection("jdbc:mysql://localhost:3306/mpdb",user,password);
String sql = new String("SELECT * FROM 'dati' WHERE user =? and pass =?");
st = con.prepareStatement(sql);
}catch(Exception ex){
JOptionPane.showMessageDialog(null, "Connessione non riuscita");
ex.printStackTrace();
}
}
The login:
#SuppressWarnings("deprecation")
public void mouseClicked(MouseEvent arg0) {
TextFields tf = new TextFields();
Driver d = new Driver();
try{
String sql = new String("SELECT user,pass FROM 'dati' WHERE user =? and pass =?");
ps = d.con.prepareStatement(sql);
ps.setString(1,tf.ftf.getText()); //JFormattedTextField
ps.setString(2,tf.pf.getText()); //JPasswordField
rs = ps.executeQuery();
if(rs.next()){
JOptionPane.showMessageDialog(null, "User successfully logged");
}else{
JOptionPane.showMessageDialog(null, "User not found");
}
}catch(Exception ex){
ex.printStackTrace();
}
}
The select statement is wrong. Single quotes (') denote string literals in SQL, not object names (in your case - the table name). Since the SQL is invalid, no result set can be created, and hence the exception.
To resolve this, you should remove the quotes around 'dati':
String sql = "SELECT user,pass FROM dati WHERE user =? and pass =?"
I resolved with this code:
Execute connection:
package main;
import java.sql.Connection;
import java.sql.DriverManager;
import javax.swing.JOptionPane;
public class Driver {
Connection con = null;
public static Connection Join()
{
try{
Class.forName("com.mysql.jdbc.Driver").newInstance();
String user = "root";
String password = "";
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/mpdb",user,password);
return con;
}catch(Exception ex){
JOptionPane.showMessageDialog(null, "Connessione non riuscita");
ex.printStackTrace();
return null;
}
}
}
Login Button:
#SuppressWarnings("deprecation")
public void mouseClicked(MouseEvent arg0) {
TextFields tf = new TextFields();
String sql = new String("SELECT * FROM `dati` WHERE user = ? and pass = ?");
try{
ps = con.prepareStatement(sql);
ps.setString(1,tf.ftf.getText().trim());
ps.setString(2,tf.pf.getText().trim());
rs = ps.executeQuery();
if(rs.next()){
JOptionPane.showMessageDialog(null, "Login effettuato");
}else{
JOptionPane.showMessageDialog(null, "Utente o password non corretti");
}
}catch(Exception ex){
ex.printStackTrace();
}
}
public void mousePressed(MouseEvent arg0) {
}
public void mouseReleased(MouseEvent arg0) {
}
});
But now I've a new problem: the program do its work but it doesn't compare correctly the password. How do I have to proceed?
Hi,
I am using the below code in USER DEFINED JAVA CLASS:
//STEP 1. Import required packages import java.sql.*;
import org.pentaho.di.core.database.*;
public class JDBCExample {
// JDBC driver name and database URL
static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
static final String DB_URL ="jdbc:mysql://localhost:1111/mysql";
// Database credentials
static final String USER = "USER";
static final String PASS = "PASS";
public static void main(String[] args) {
Connection conn = null;
Statement stmt = null; try{
//STEP 2: Register JDBC driver
Class.forName("com.mysql.jdbc.Driver");
//STEP 3: Open a connection
System.out.println("Connecting to a selected database...");
conn = DriverManager.getConnection(DB_URL, USER, PASS);
System.out.println("Connected database successfully...");
//STEP 4: Execute a query
System.out.println("Creating statement...");
stmt = conn.createStatement();
String sql = "select id,sorname,src_databasetype,src_databasename from table";
ResultSet rs = stmt.executeQuery(sql);
//STEP 5: Extract data from result set
while(rs.next()){
//Retrieve by column name
int id = rs.getInt("id");
String sorname = rs.getString("sorname");
String src_databasetype = rs.getString("src_databasetype");
String src_databasename = rs.getString("src_databasename");
//Display values
System.out.print("ID: " + id);
System.out.print(", sorname: " + sorname);
System.out.print(", src_databasetype: " + src_databasetype);
System.out.println(", src_databasename: " + src_databasename);
}
rs.close(); }catch(SQLException se){
//Handle errors for JDBC
se.printStackTrace(); }catch(Exception e){
//Handle errors for Class.forName
e.printStackTrace(); }finally{
//finally block used to close resources
try{
if(stmt!=null)
conn.close();
}catch(SQLException se){
}// do nothing
try{
if(conn!=null)
conn.close();
}catch(SQLException se){
se.printStackTrace();
}//end finally try }//end try System.out.println("Goodbye!"); }//end main }//end JDBCExample
Running the code through command prompt its working fine
BUT on running the step(In PDI) alone I am getting error:
Non-abstract class "Processor" must implement method "boolean org.pentaho.di.trans.steps.userdefinedjavaclass.TransformClassBase.processRow(org.pentaho.di.trans.step.StepMetaInterface,
org.pentaho.di.trans.step.StepDataInterface) throws
org.pentaho.di.core.exception.KettleException"
For UDJC, I think instead of putting code in the main method, you need to put it in processRow().
Instead of using -
public static void main(String[] args)
use -
public boolean processRow(StepMetaInterface smi, StepDataInterface sdi) throws KettleException
I am still skeptical if its still going to work as I don't understand what you're trying to do with that code.
Try writing your code in processRow method as follows:
public boolean processRow(StepMetaInterface smi, StepDataInterface sdi) throws KettleException{
Object[] r = getRow();
if (r == null) {
setOutputDone();
return false;
}
Object[] outputRow = createOutputRow(r, data.outputRowMeta.size());
//String row = getString(r)+",";
//setValue(outputRow, row)
putRow(data.outputRowMeta, outputRow);
return true;
}
I've been trying to save values into a database called "CLIENT".
The database is created via this code:
package Database;
//STEP 1. Import required packages
import java.sql.*;
public class JDBCExampleCreateTables {
// JDBC driver name and database URL
private static String JDBC_DRIVER = "org.h2.Driver";
private static String DB_URL = "jdbc:h2:file:C:/WAKILI/WAKILIdb";
// Database credentials
private static String USER = "sa";
private static String PASS = "";
public static void main (String[] args) {
Connection conn = null;
Statement stmt = null;
try {
//STEP 2: Register JDBC driver
Class.forName(JDBC_DRIVER);
//STEP 3: Open a connection
System.out.println("Connecting to a selected database...");
conn = DriverManager.getConnection(DB_URL, USER, PASS);
System.out.println("Connected database successfully...");
//STEP 4: Execute a query
System.out.println("Creating table in given database...");
stmt = conn.createStatement();
String sql = "CREATE TABLE CLIENT " +
"(ID INT UNSIGNED NOT NULL AUTO_INCREMENT, " +
" fullNames VARCHAR(255), " +
" iDNumber VARCHAR(255), " +
" pINNumber VARCHAR(255), " +
" passportNumber VARCHAR(255), " +
" postOfficeBoxNumber VARCHAR(255), " +
" postalCode VARCHAR(255), " +
" telephoneNumberLandline VARCHAR(255), " +
" telephoneNumberMobile VARCHAR(255), " +
" CARD VARCHAR(255)) ";
stmt.executeUpdate(sql);
System.out.println("Created table in given database...");
} catch (SQLException se) {
//Handle errors for JDBC
se.printStackTrace();
} catch (Exception e) {
// Handle errors for Class.forName
e.printStackTrace();
} finally {
// finally block used to close resources
try {
if (stmt!=null)
conn.close();
} catch(SQLException se) {
} // do nothing
try {
if (conn!=null)
conn.close();
} catch (SQLException se) {
se.printStackTrace();
} // end finally try
} // end try
System.out.println("Goodbye!");
} // end main
} // end
The class that I'm trying to have save into the database is:
package Database;
//STEP 1. Import required packages
import java.sql.*;
public class JDBCExampleInsertRecords {
public final String values;
public final String table;
public JDBCExampleInsertRecords (String values, String table)
{
this.values = values;
this.table = table;
}
// JDBC driver name and database URL
private static String JDBC_DRIVER = "org.h2.Driver";
private static String DB_URL = "jdbc:h2:file:C:/WAKILI/WAKILIdb";
// Database credentials
private static String USER = "sa";
private static String PASS = "";
public static void main () {
Connection conn = null;
Statement stmt = null;
try {
//STEP 2: Register JDBC driver
Class.forName(getJDBC_DRIVER());
//STEP 3: Open a connection
System.out.println("Connecting to a selected database...");
conn = DriverManager.getConnection(getDB_URL(), getUSER(), getPASS());
System.out.println("Connected database successfully...");
//STEP 4: Execute a query
System.out.println("Inserting records into the table...");
stmt = conn.createStatement();
String sql = "INSERT INTO CLIENT " + "VALUES ((values))";
stmt.executeUpdate(sql);
System.out.println("Inserted records into the table...");
} catch (SQLException se) {
//Handle errors for JDBC
se.printStackTrace();
} catch (Exception e) {
//Handle errors for Class.forName
e.printStackTrace();
} finally {
//finally block used to close resources
try {
if (stmt != null)
conn.close();
} catch (SQLException se) {
} // do nothing
try {
if (conn!=null)
conn.close();
} catch (SQLException se) {
se.printStackTrace();
} //end finally try
} //end try
System.out.println("Goodbye!");
} //end main
/**
* #return the JDBC_DRIVER
*/
public static String getJDBC_DRIVER() {
return JDBC_DRIVER;
}
/**
* #param aJDBC_DRIVER the JDBC_DRIVER to set
*/
public static void setJDBC_DRIVER(String aJDBC_DRIVER) {
JDBC_DRIVER = aJDBC_DRIVER;
}
/**
* #return the DB_URL
*/
public static String getDB_URL() {
return DB_URL;
}
/**
* #param aDB_URL the DB_URL to set
*/
public static void setDB_URL(String aDB_URL) {
DB_URL = aDB_URL;
}
/**
* #return the USER
*/
public static String getUSER() {
return USER;
}
/**
* #param aUSER the USER to set
*/
public static void setUSER(String aUSER) {
USER = aUSER;
}
/**
* #return the PASS
*/
public static String getPASS() {
return PASS;
}
/**
* #param aPASS the PASS to set
*/
public static void setPASS(String aPASS) {
PASS = aPASS;
}
} //end
The code that gets the values is in a Class called "AddNewClient" and is as follows:
public String getValues () {
String fullNames = fullNamesJTextField.getText();
String iDNumber = identificationNumberJTextField.getText();
String pINNumber = pINNumberJTextField.getText();
String passportNumber = passportNumberJTextField.getText();
String postOfficeBoxNumber = postOfficeBoxNumberJTextField.getText();
String postalCode = postalCodeJTextField.getText();
String telephoneNumberLandline = telephoneNumberLandlineJTextField.getText();
String telephoneNumberMobile = telephoneNumberMobileJTextField.getText();
List<String> client = new ArrayList<String>();
client.add(fullNames);
client.add(iDNumber);
client.add(pINNumber);
client.add(passportNumber);
client.add(postOfficeBoxNumber);
client.add(postalCode);
client.add(telephoneNumberLandline);
client.add(telephoneNumberMobile);
StringBuilder builder = new StringBuilder();
String listStringClient = "";
for (String s : client)
{
listStringClient += "NULL" + "'" + s + "'" + ",";
}
return listStringClient;
}
I get an error message:
run:
Connecting to a selected database...
Connected database successfully...
Inserting records into the table...
org.h2.jdbc.JdbcSQLException: Column count does not match; SQL statement:
I've been at this for the past two days to no success whatsoever. I will be very, very very greatful to anyone who would come to my rescue. Thank you.
This is where one problem is:
String sql = "INSERT INTO CLIENT " + "VALUES ((values))";
stmt.executeUpdate(sql);
Values should be the getValues() method, instead of just a string, so
String sql = "INSERT INTO CLIENT VALUES (" + getValues() + ")";
Additionally, since you do not specify which columns, it is assumed that all columns are being entered in the values. If CARD does not have a default value in your SQL database, and if it cannot be NULL, you're going to have a problem.
Finally, this is a little strange:
for (String s : client)
{
listStringClient += "NULL" + "'" + s + "'" + ",";
}
You'll want the values, not 'NULL', so it should be
for (String s : client)
{
listStringClient += "'" + s + "'" + ",";
}
And finally, the way you're doing it, you're going to have an extra comma at the end (ex: 'value1','value2','value3',)
Clip the final comma:
return listStringClient.substring(0, listStringClient.size() - 1);
Granted, there's a better way to do the for loop where you do not have that extra comma.
End the end, the sql String should look like this:
"INSERT INTO CLIENT VALUES('value1','value2','value3','value4','value5','value6')"
Do a System.out.println(sql) and see what the String statement is that you're trying to execute. You'll see the error then.
Here's a better way to build your values string without the comma issue:
Iterator<String> iter = client.iterator();
StringBuilder sb = new StringBuilder();
while (iter.hasNext()) {
sb.append("'").append(iter.next()).append("'");
if (iter.hasNext())
sb.append(",");
}
return sb.toString();
You forget to mention the value for CARD column. If you dont want to set any value there, just pass ' '.
Your for loop should be like this
for (String s : client)
{
listStringClient += "NULL" + "'" + s + "'" + ",";//GIVES YOU ERROR BECAUSE AT THE END OF
} // FOR LOOP IT HAS , IN THE END OF STRING.
listStringClient+="' '";//This is for CARD COLUMN.
You do not pass any value in your statement. Following code is static, it does not have parameters:
INSERT INTO CLIENT " + "VALUES ((values))
It is nonsense SQL command: INSERT INTO CLIENT VALUES ((values)). You wanted express
String sql = "INSERT INTO CLIENT VALUES " + getValues()";
I prefer to use PreparedStatement, as it is safe and it will escape dangerous characters:
String sql = "INSERT INTO PRODUCT VALUES(?,?,?,?,?,?,?,?,?,?)";
PreparedStatement prest = con.prepareStatement(sql);
prest.setString(1, "asdf");
prest.setInt(2, 2009);
// etc
int count = prest.executeUpdate();
I think instead of :
String sql = "INSERT INTO CLIENT " + "VALUES ((values))";
You want something like :
String sql = "INSERT INTO CLIENT " + "VALUES ("+getValues()+")";
Also the implementation of getValues is kind of strange :
for (String s : client)
{
listStringClient += "NULL" + "'" + s + "'" + ",";
}
Probably it could be :
for (String s : client)
{
listStringClient += "'" + s + "',"
}
listStringClient += "NULL";
I can't thank you all enough for the amazing answers. I put the various ideas and came up with this solution to my problem.
My working answer to my Question above takes ideas from Leos Literak, abmitchell, Vimal Bera and Grisha's answers.
The database is created via this code:
package Database;
//STEP 1. Import required packages
import java.sql.*;
public class JDBCExampleCreateTables {
// JDBC driver name and database URL
private static String JDBC_DRIVER = "org.h2.Driver";
private static String DB_URL = "jdbc:h2:file:C:/WAKILI/WAKILIdb";
// Database credentials
private static String USER = "sa";
private static String PASS = "";
public static void main (String[] args) {
Connection conn = null;
Statement stmt = null;
try {
//STEP 2: Register JDBC driver
Class.forName(JDBC_DRIVER);
//STEP 3: Open a connection
System.out.println("Connecting to a selected database...");
conn = DriverManager.getConnection(DB_URL, USER, PASS);
System.out.println("Connected database successfully...");
//STEP 4: Execute a query
System.out.println("Creating table in given database...");
stmt = conn.createStatement();
String sql = "CREATE TABLE CLIENT " +
"(ID INT UNSIGNED NOT NULL AUTO_INCREMENT, " +
" fullNames VARCHAR(255), " +
" iDNumber VARCHAR(255), " +
" pINNumber VARCHAR(255), " +
" passportNumber VARCHAR(255), " +
" postOfficeBoxNumber VARCHAR(255), " +
" postalCode VARCHAR(255), " +
" telephoneNumberLandline VARCHAR(255), " +
" telephoneNumberMobile VARCHAR(255)) ";
stmt.executeUpdate(sql);
System.out.println("Created table in given database...");
} catch (SQLException se) {
//Handle errors for JDBC
se.printStackTrace();
} catch (Exception e) {
// Handle errors for Class.forName
e.printStackTrace();
} finally {
// finally block used to close resources
try {
if (stmt!=null)
conn.close();
} catch(SQLException se) {
} // do nothing
try {
if (conn!=null)
conn.close();
} catch (SQLException se) {
se.printStackTrace();
} // end finally try
} // end try
System.out.println("Goodbye!");
} // end main
} // end
The class that saves into the database is:
package Database;
//STEP 1. Import required packages
import java.sql.*;
public class JDBCExampleInsertRecords {
public static String values;
public final String table;
public JDBCExampleInsertRecords (String values, String table)
{
this.values = values;
this.table = table;
}
// JDBC driver name and database URL
private static String JDBC_DRIVER = "org.h2.Driver";
private static String DB_URL = "jdbc:h2:file:C:/WAKILI/WAKILIdb";
// Database credentials
private static String USER = "sa";
private static String PASS = "";
public static void main () {
Connection conn = null;
Statement stmt = null;
try {
//STEP 2: Register JDBC driver
Class.forName(getJDBC_DRIVER());
//STEP 3: Open a connection
System.out.println("Connecting to a selected database...");
conn = DriverManager.getConnection(getDB_URL(), getUSER(), getPASS());
System.out.println("Connected database successfully...");
//STEP 4: Execute a query
System.out.println("Inserting records into the table...");
stmt = conn.createStatement();
String sql = "INSERT INTO CLIENT VALUES (NULL, " + (values) + ")";
stmt.executeUpdate(sql);
System.out.println("Inserted records into the table...");
} catch (SQLException se) {
//Handle errors for JDBC
se.printStackTrace();
} catch (Exception e) {
//Handle errors for Class.forName
e.printStackTrace();
} finally {
//finally block used to close resources
try {
if (stmt != null)
conn.close();
} catch (SQLException se) {
} // do nothing
try {
if (conn!=null)
conn.close();
} catch (SQLException se) {
se.printStackTrace();
} //end finally try
} //end try
System.out.println("Goodbye!");
} //end main
/**
* #return the JDBC_DRIVER
*/
public static String getJDBC_DRIVER() {
return JDBC_DRIVER;
}
/**
* #param aJDBC_DRIVER the JDBC_DRIVER to set
*/
public static void setJDBC_DRIVER(String aJDBC_DRIVER) {
JDBC_DRIVER = aJDBC_DRIVER;
}
/**
* #return the DB_URL
*/
public static String getDB_URL() {
return DB_URL;
}
/**
* #param aDB_URL the DB_URL to set
*/
public static void setDB_URL(String aDB_URL) {
DB_URL = aDB_URL;
}
/**
* #return the USER
*/
public static String getUSER() {
return USER;
}
/**
* #param aUSER the USER to set
*/
public static void setUSER(String aUSER) {
USER = aUSER;
}
/**
* #return the PASS
*/
public static String getPASS() {
return PASS;
}
/**
* #param aPASS the PASS to set
*/
public static void setPASS(String aPASS) {
PASS = aPASS;
}
} //end
The code that gets the values is in a Class called "AddNewClient" and is as follows:
public String getValues () {
String fullNames = fullNamesJTextField.getText();
String iDNumber = identificationNumberJTextField.getText();
String pINNumber = pINNumberJTextField.getText();
String passportNumber = passportNumberJTextField.getText();
String postOfficeBoxNumber = postOfficeBoxNumberJTextField.getText();
String postalCode = postalCodeJTextField.getText();
String telephoneNumberLandline = telephoneNumberLandlineJTextField.getText();
String telephoneNumberMobile = telephoneNumberMobileJTextField.getText();
List<String> client = new ArrayList<String>();
client.add(fullNames);
client.add(iDNumber);
client.add(pINNumber);
client.add(passportNumber);
client.add(postOfficeBoxNumber);
client.add(postalCode);
client.add(telephoneNumberLandline);
client.add(telephoneNumberMobile);
Iterator<String> iter = client.iterator();
StringBuilder sb = new StringBuilder();
while (iter.hasNext()) {
sb.append("'").append(iter.next()).append("'");
if (iter.hasNext())
sb.append(",");
}
return sb.toString();
}