Remote Interface

The DatabaseInterface is the interface that defines the remote methods.

Listing 14.1 DatabaseInterface.java

import java.rmi.*;
import java.sql.*;

//remote interface
public interface DatabaseInterface extends Remote {
	 
  //method used to add a new record
  public String addRecord(Student std)
	throws RemoteException,SQLException ;

  //method used to delete a record
  public String deleteRecord(int rollNumber)
	throws RemoteException,SQLException ;

  //method used to update a record
  public String updateRecord(Student std)
	throws RemoteException,SQLException ;

  //method used to find a record
  public Object findRecord(int rollNumber)
	throws RemoteException,SQLException ;
 }

The code defines four methods used to add, delete, update, and find a record. These methods will be invoked remotely by clients.