How to connect DB in Java

// Note that import jar package for the driver 

1、Oracle8/8i/9i

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

String url="jdbc:oracle:thin:@localhost:1521:orcl"; 

//orcl is the SID 

String user="test"; 

String password="test"; 

Connection conn= DriverManager.getConnection(url,user,password); 

2、DB2

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

String url="jdbc:db2://localhost:5000/sample"; 

//sample is the DB name 

String user="admin"; 

String password=""; 

Connection conn= DriverManager.getConnection(url,user,password); 

3、Sql Server7.0/2000  

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

String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb"; 

//mydb is the DB name 

String user="sa"; 

String password=""; 

Connection conn= DriverManager.getConnection(url,user,password); 

4、Sybase

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

String url =" jdbc:sybase:Tds:localhost:5007/myDB"; 

//myDB is the DB name

Properties sysProps = System.getProperties(); 

SysProps.put("user","userid"); 

SysProps.put("password","user_password"); 

Connection conn= DriverManager.getConnection(url, SysProps); 

5、Informix

Class.forName("com.informix.jdbc.IfxDriver").newInstance(); 

String url = 

"jdbc:informix-sqli://123.45.67.89:1533/myDB:INFORMIXSERVER=myserver; 

user=testuser;password=testpassword"; 

//myDB is the DB name 

Connection conn= DriverManager.getConnection(url); 

6、MySQL 

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

String url ="jdbc:mysql://localhost/myDB?user=soft&password=soft1234&useUnicode=true&characterEncoding=8859_1" 

//myDB is the DB name 

Connection conn= DriverManager.getConnection(url); 

7、PostgreSQL 

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

String url ="jdbc:postgresql://localhost/myDB" 

//myDB is the DB name 

String user="myuser"; 

String password="mypassword"; 

Connection conn= DriverManager.getConnection(url,user,password);

Sql Server2005

Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance(); 
String url="jdbc:sqlserver://localhost:1433;DatabaseName=mydb"; 
//myDB is the DB name 
String user="sa"; 
String password=""; 
Connection conn= DriverManager.getConnection(url,user,password); 
// There is a little difference between SQL Server 2000