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Java, SQL Database Connection

I am C# developer and I don't know much about Java, normally in C# when I wanna connect to a database I use the following command:
static SqlConnection cn = new SqlConnection(#"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True");
I read a tutorial about making database connection (Sql Server 2008) in java in MSDN saying that the address must be declared this way:
String connectionUrl = "jdbc:sqlserver://localhost:1433;" + "databaseName=JavaDB;user=UserName;password=*****";
I would like to if there's any way to declare the url the way I do in C#, I mean instead of
"jdbc:sqlserver://localhost:1433;"
I directly point to the database
"AttachDbFilename=|DataDirectory|\Database.mdf;"
thanks

The first part of the URL is prescribed by the JDBC specification, so all drivers will follow the structure jdbc:<vendor-identifier>:<vendor-specific-url>.
In Java creating the connection (at least via java.sql.DriverManager) is independent of the actual Driver implementation that creates the connection (in C# you create a typed vendor-specific connection).
The first part, jdbc:<vendor-identifier> is used as a selection mechanism so a Driver can quickly decide if it will accept an URL or not. Technically multiple driver implementations could accept an URL and create the connection. The <vendor-identifier> is usually the name of the database or company.
The <vendor-specific-url> will usually follow normal URL conventions (MS SQL Server JDBC URLS are an exception to that).
The format of the Microsoft JDBC driver is:
jdbc:sqlserver://[serverName[\instanceName][:portNumber]][;property=value[;property=value]]
See: Building the Connection URL.
Technically, Microsoft could have allowed only the database name in their <vendor-specific-url> and imply that it uses localhost but they decided not to do that.

The official documentation of the SQL JDBC driver does not mention any such thing
http://msdn.microsoft.com/en-us/library/ms378428.aspx
http://msdn.microsoft.com/en-us/library/ms378672(v=sql.110).aspx
so I assume it is not possible

Java7 sqljdbc4 - SQL error 08S01 on getConnection()

I'm trying to write a really simple GUI app for inserting some records
into a database, and reading back some records (nothing fancy, just 1 table with 3 rows, no relations).
The source...
package EntryProg;
import java.sql.*;
import com.microsoft.sqlserver.jdbc.*;
public class CourseDataEntryHandler
{
private Connection connect;
private CallableStatement callState;
private ResultSet rSet;
private SQLServerDataSource dSource;
public CourseDataEntryHandler()
{
rSet = null;
callState = null;
dSource = new SQLServerDataSource();
dSource.setUser(REDACTED);
dSource.setPassword(REDACTED);
dSource.setServerName(REDACTED);
dSource.setPortNumber(REDACTED);
dSource.setDatabaseName(REDACTED);
dSource.setEncrypt(true);
dSource.setTrustServerCertificate(true);
try
{
Error here
connect = dSource.getConnection();
end error
}
catch (SQLServerException e)
{
//TODO Figure out how to handle -- logging for now, console
do
{
System.out.println(e.getErrorCode());
System.out.println(e.getMessage());
System.out.println(e.getSQLState());
e = (SQLServerException) e.getNextException();
} while (e != null);
System.out.println("END");
System.out.println();
}
}
I get the following error...
(code)0
(message)SQL Server did not return a response. The connection has been closed.
(state)08S01
I've verified that the user,pass,server name,port, and DB name are all accurate.
If I change the username to a non-valid one, I get a "could not log in" error reported back so I know I'm hitting the server.
I've not been able to fully connect once, so I know it's not a "too many connections" issue, as the only person currently logged into the server is me via sql management studio. It doesn't work when I log out of that either so definitely not a connections # issue.
The applications user has datareader/datawriter permissions as well.
(I'm using Eclipse, if that matters. And am referencing the sqljdbc4.jar library).
I'm at a loss as to where to go with troubleshooting this. Any help would be greatly appreciated.
EDIT
Update - I've also tried a connection string and using DriverManager.getConnection(connString) to set the connection, that didn't work either. The result is the same.
Also, SQL server 2008 r2 is the sql server version I'm using.
EDIT
I wrote a quick C# program to test the connection, sure enough the connection works fine in .net, unfortunately I have to use java for this project (it's a project I've chosen to do on my own for a class, only requirement is it be in Java...teacher has no clue what's going on either).

Comment the line with setEncrypt(true):
...
dSource.setDatabaseName(REDACTED);
//dSource.setEncrypt(true);
dSource.setTrustServerCertificate(true);
...
You might have trouble with the encryption setting. From the setEncrypt(...) documentation:
If the encrypt property is set to true, the Microsoft SQL Server JDBC Driver uses the JVM's default JSSE security provider to negotiate SSL encryption with SQL Server. The default security provider may not support all of the features required to negotiate SSL encryption successfully. For example, the default security provider may not support the size of the RSA public key used in the SQL Server SSL certificate. In this case, the default security provider might raise an error that will cause the JDBC driver to terminate the connection. In order to resolve this issue, do one of the following:
Configure the SQL Server with a server certificate that has a smaller RSA public key
Configure the JVM to use a different JSSE security provider in the "/lib/security/java.security" security properties file
Use a different JVM
Update
With Java versions 1.6.0_29 and 7.0.0_1 Oracle introduced a security fix for the SSL/TLS BEAST attack that very likely will cause the very same problem. The above security fix is known to make trouble for database connections to MSSQL Server with both the jTDS driver and the Microsoft driver. You can either
decide not to use encryption by not using setEncrypt(true) (as specified above)
or, if it is enforced by MSSQL Server, you could turn off the Java fix in your JVM by setting the -Djsse.enableCBCProtection=false system property. Be warned, it will affect all SSL connections within the same VM.

Sometimes, the engine configuration is modified in such a way it doesn't accept external connections. After some research, the following worked for me:
Open SQL Server Configuration Manager
Get to SQL SERVER Network Configuration
MSSQLSERVER Protocols (Double click)
View TCP/IP (must be enabled) (Open)
Go to tab "IP Addresses"
Type into "TCP Port" :1433
The enabled and activated options must be Enabled: Yes
Restart the service

Problem in establishing DB2 connection in Java with wrong username/password

I have a problem in establishing DB2 connection with wrong user-name/password. We have an application which runs on LAN on many systems using DB2 database located on my system as well as other systems.
Firstly I use this URL to create other system DB2 connection:
Connection con = DriverManager.getConnection("jdbc:db2://Rahulkcomputer:50000/XAN4", "rahulk", "dbirs#35");
this returns proper Connection object. Now when I change the URL to access my system DB2 connection with same user-name/password as (using same user-name/password is intensely done for checking error handling):
Connection con = DriverManager.getConnection("jdbc:db2://127.0.0.1:50000/XAN4", "rahulk", "dbirs#35");
This time it again returns the Connection object instead of throwing an SQLException specifying wrong user-name/password (due to my system's DB2 authentication is totally different from Rahulkcomputer's system)
After getting connection, I execute this query to check proper user name as explained in post:
Simple DB2 Query for connection validation
SELECT CURRENT SQLID FROM SYSIBM.SYSDUMMY1
(this returns "rahulk" in both cases)
Why DB2 created connection in 2nd case with wrong user-name/password (moreover when we close all the services of DB2 on Rahulkcomputer, even then I get the connection in 2nd case)?
Thanks in Advance.

You either created your database with the restrictive option or revoked the select right to sysibm from PUBLIC. The connection you had was fine, the access rights not. 42704 is DB2's way of saying "huh?", it did not recognize sysibm because you had no rights to see it.

Connecting to a MySQL database

I have created a MySQL database. I am building a GUI in java. How can I connect this Java software to the database?

First, you need to add the mysql jdbc driver jar to your project, then you would create a connection as follows:
String url = "jdbc:mysql://yourhost:port/dbname";
Class.forName ("com.mysql.jdbc.Driver"); // to load the driver
Connection conn = DriverManager.getConnection (url, userName, password);
Here yourhost is the name or ip address of the server, port is the port number to which the mysql server is bound, dbname is the name of your database.

using any of the miriad of Java/SQL API, so you can perform normal SQL queries. JDBC is a start

Start using JDBC, it's best for start. Take a look on some tutorials
http://www.tutorialspoint.com/jdbc/jdbc-quick-guide.htm
http://www.jdbc-tutorial.com/

this post has helped me quite alot!
I'm quite 'disapointed' and 'suprised' I suppose that Java doesn't have the fuctionatly of connected to online databases built in.
One thing that would make it better, and please tell me the followings true: the fact that users of my software don't have to do anything special like install any drivers?

I've already added one answer - asking a question but the comments/reply's I got seem to be a bit off topic and now I've commented back asking for the answer to my original question no one seems to be answering (Have a look for your self - see what I mean)
So, the orignal question :: The only thing I want to know;
Do the users of my software I made using JDBC have to do anything special regarding JDBC, or is just me who needs to have JDBC while writting the program?
PS Sorry if I'm a bit pushy or doing things that your not supposed to do - I'm new to this community!

ODBC Connection Setup in Java

I want to write a Java program that automates the work that the ODBC Data Source Administrator does in Windows.
That is, given an ODBC connection name and a path to the database on the hard drive, I want it to create the connection.
I really have no idea where to even begin with this. I looked at this but it said it was for C and I don't think that's very helpful. If anyone could point me in the right direction for this at all, I would appreciate it.
(I realize this question is REALLY vague, but that's all the information I was given.)

The answer to the question is that you don't need a registered DSN.
Here is an example of using a ODBC connection (not JDBC) from Java, using the system ODBC driver. Instead of editing the registry to create a registered DSN, your alternative is to use a un-registered DSN, like so:
Driver=sun.jdbc.odbc.JdbcOdbcDriver
Source=jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=C:/Dir/DB/MyDB.mdb;
Or, using SQL Server:
Driver=sun.jdbc.odbc.JdbcOdbcDriver
Source=jdbc:odbc:Driver={SQL Server};SERVER=127.1;DATABASE=MyDB;UID=sa;PWD=mypass

All ODBC configuration is in Windows registry or odbc.ini in Linux (I haven't used ODBC on other platforms). At first you must create such configuration using ODBC manager, then check what was saved in configuration and write program that do the same. If you work with Windows 32 bit, then check registry at HKEY_LOCAL_MACHINE\SOFTWARE\ODBC.
Windows 64 bit have different configurations for 32 bit apps and 64 bit apps (just look for odbc.ini string in registry).
I think Java is not the best language to change something in Windows registry, but with Java you can create .reg text file that can be imported by regedit.exe, or you can use other language like Python with win32 extensions (Active Python has it by default).

You will want to look into using JDBC.

String driver ="sun.jdbc.odbc.JdbcOdbcDriver"
String url = "jdbc:odbc:Driver={Microsoft Access Text Driver (*.txt, *.csv)};DBQ=C:/CSVFolder
query = select * from myfile.csv

Check this one out..
Java Database Connectivity (JDBC) supports ODBC-based databases and provides a independent database.
Connection connection = null;
try {
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
connection = DriverManager.getConnection("connection string", "userName", "password" );
} catch (SQLException e) {
}
return connection;

I've never had to connect to MS SQL Server before. I've always used DB2 or Derby, MYSQL and everything was always the same for creating a connection. This is what I had to do for SQL Server.
private final String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
Class.forName(driver);
url="jdbc:odbc:;DRIVER={SQL Server};SERVER="+server+","+port+";DATABASE="+dbName;
connection = DriverManager.getConnection(url,user,password);