jdbc 数据库的连接(sqlserver oracle)

Connection con;
public Connection getCon(){
try{ Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");//加载驱动程序
con=DriverManger.getConnection("jdbc:microsoft:sqlServer://localhost:1433;DatabaseName=aa","sa"，""); // 试图建立到给定数据库 URL 的连接
}catch(ClassNotFoundException e){
e.printStackTrace();
}catch(SQLException e){
e.printStackTrace();
}
return con;
}

Connection con;
public Connection getCon(){
try{
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");//加载驱动程序
con=DriverManger.getConnection("jdbc:microsoft:sqlServer://localhost:1433;DatabaseName=aa","sa"，""); // 试图建立到给定数据库 URL 的连接
}catch(ClassNotFoundException e){
e.printStackTrace();
}catch(SQLException e){
e.printStackTrace();
}
return con;
}

Connection con;
public Connection getCon(){
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
con=DriverManger.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:oracle","scott","tiger");
}catch(Exception e){
e.printStackTrace();
}
return con;
}