第一种方式：通过数据库本身的JDBC Driver连接到数据库

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

Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@192.168.1.33:1521:huihoo","scott","tiger");

第二种方式：通过JDBC-ODBC桥连接到数据库

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

Connection conn = DriverManager.getConnection("jdbc:odbc:192.168.1.33","scott","tiger");

192.168.1.33为数据源

完整的用户登录

Properties props = new Properties();

props.put("user", "scott");

props.put("password", "tiger");

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

conn = myDriver.connect("jdbc:oracle:thin:@192.168.1.33:1521:huihoo", props);

conn.close();

System.out.println("成功登录.");

System.out.println("欢迎您 "+props.getProperty("user")+"!");