INTERVIEW QUESTIONS J2EE DETAILS

Question: Connection is an interface.But how we can able to make the object of Connection interface
i.e-
Connection con=DriverManager.getConnection();
Can you write a program as the above statement.

Answer: Here we are using the concept of anonymous inner class.DriverManager.getConnection() returns object of that class which implements the Connection interface,which has no name.

Here we are using the concept of anonymous inner class.DriverManager.getConnection() returns object of that class which implements the Connection interface,which has no name. Source: CoolInterview.com

Connection con=DriverManager.getConnection(-,-,-);
In java we can't create the objects of interfaces. But in above code con is the object of Connection.
Actually con is object of a class that implements Connection interface.The implementation class implemented by the JDBC Driver vendor.Programer no need to write that code.
Source: CoolInterview.com

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