String driver=“com.mysql.jdbc.Driver”;
String url="jdbc:mysql://127.0.0.1:3306/test";
String user="root";
String password="root";
Class.forName("driver")
Connection conn= DriverManager.getConnection(url,user,password);
String driver=“oracle.jdbc.driver.OracleDriver”;
String url="jdbc:oracle:thin:@//127.0.0.1:1521/orcl";
String user="root";
String password="root";
Class.forName("driver")
Connection conn= DriverManager.getConnection(url,user,password);
String driver=“org.postgresql.Driver”;
String url="jdbc:postgresql://127.0.0.1:5432/postgres";
String user="root";
String password="root";
Class.forName("driver")
Connection conn= DriverManager.getConnection(url,user,password);
String driver="com.ibm.db2.jdbc.app.DB2Driver "
String url="jdbc:db2://localhost:5000/sample"; //sample为你的数据库名
String user="admin";
String password=""; Class.forName("driver")
Connection conn= DriverManager.getConnection(url,user,password);
String driver="com.microsoft.sqlserver.jdbc.SQLServerDriver";
String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb";
String user="sa";
String password="";
Class.forName("driver")
Connection conn= DriverManager.getConnection(url,user,password);