1. MySQL(http://www.mysql.com)mysql-connector-java-2.0.14-bin.jar

Class.forName( "org.gjt.mm.mysql.Driver" );

cn = DriverManager.getConnection( "jdbc:mysql://MyDbComputerNameOrIP:3306/myDatabaseName", sUsr, sPwd );

2. PostgreSQL(http://www.de.postgresql.org)pgjdbc2.jar

Class.forName( "org.postgresql.Driver" );

cn = DriverManager.getConnection( "jdbc:postgresql://MyDbComputerNameOrIP/myDatabaseName", sUsr, sPwd );

3. Oracle(http://www.oracle.com/ip/deploy/database/oracle9i/)classes12.zip

Class.forName( "oracle.jdbc.driver.OracleDriver" );

cn = DriverManager.getConnection( "jdbc:oracle:thin:@MyDbComputerNameOrIP:1521:ORCL", sUsr, sPwd );

4. Sybase(http://jtds.sourceforge.net)jconn2.jar

Class.forName( "com.sybase.jdbc2.jdbc.SybDriver" );

cn = DriverManager.getConnection( "jdbc:sybase:Tds:MyDbComputerNameOrIP:2638", sUsr, sPwd );

//(Default-Username/Password: "dba"/"sql")

5. Microsoft SQL Server(http://jtds.sourceforge.net)

Class.forName( "net.sourceforge.jtds.jdbc.Driver" );

cn = DriverManager.getConnection( "jdbc:jtds:sqlserver://MyDbComputerNameOrIP:1433/master", sUsr, sPwd );

6. Microsoft SQL Server(http://www.microsoft.com)

Class.forName( "com.microsoft.jdbc.sqlserver.SQLServerDriver" );

cn = DriverManager.getConnection( "jdbc:microsoft:sqlserver://MyDbComputerNameOrIP:1433;databaseName=master", sUsr, sPwd );

7. ODBC

Class.forName( "sun.jdbc.odbc.JdbcOdbcDriver" );

Connection cn = DriverManager.getConnection( "jdbc:odbc:" + sDsn, sUsr, sPwd );

8.DB2

Class.forName("com.ibm.db2.jdbc.net.DB2Driver");

String url="jdbc:db2://192.9.200.108:6789/SAMPLE"

cn = DriverManager.getConnection( url, sUsr, sPwd );

9. ACCESS

String driver = "sun.jdbc.odbc.JdbcOdbcDriver";

String url = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ = Northwind.mdb";

Class.forName(driver);

conn = DriverManager.getConnection(url,user,pwd);