Class.forName("oracle.jdbc.driver.OracleDriver").newInstance(); 
 
String url="jdbc:oracle:thin:@localhost:1521:orcl"; 
 
//orcl为数据库的SID 
 
String user="test"; 
 
String password="test"; 
 
Connection conn= DriverManager.getConnection(url,user,password); 　

Class.forName("com.ibm.db2.jdbc.app.DB2Driver ").newInstance(); 
 
String url="jdbc:db2://localhost:5000/sample"; 
 
//sample为你的数据库名 
 
String user="admin"; 
 
String password=""; 
 
Connection conn= DriverManager.getConnection(url,user,password); 

Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance(); 
 
String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb"; 
 
//mydb为数据库 
 
String user="sa"; 
 
String password=""; 
 
Connection conn= DriverManager.getConnection(url,user,password); 

Class.forName("com.sybase.jdbc.SybDriver").newInstance(); 
 
String url =" jdbc:sybase:Tds:localhost:5007/myDB"; 
 
//myDB为你的数据库名 
 
Properties sysProps = System.getProperties(); 
 
SysProps.put("user","userid"); 
 
SysProps.put("password","user_password"); 
 
Connection conn= DriverManager.getConnection(url, SysProps); 

Class.forName("org.gjt.mm.mysql.Driver").newInstance(); 
 
String url ="jdbc:mysql://localhost/myDB?user=soft&password=soft1234&useUnicode=true&characterEncoding=8859_1" 
 
//myDB为数据库名 
 
Connection conn= DriverManager.getConnection(url); 

Class.forName("org.postgresql.Driver").newInstance(); 
 
String url ="jdbc:postgresql://localhost/myDB" 
 
//myDB为数据库名 
 
String user="myuser"; 
 
String password="mypassword"; 
 
Connection conn= DriverManager.getConnection(url,user,password);