seminarproxy.java

高级java2 大学教程(含源码,经典的Java学习教程

// SeminarProxy.java
// SeminarProxy is a proxy for the SeminarInfo Jini service. 
package com.deitel.advjhtp1.jini.seminar.service;

// Java core packages
import java.io.Serializable;
import java.rmi.*;

// Deitel packages
import com.deitel.advjhtp1.jini.seminar.Seminar;

public class SeminarProxy implements SeminarInterface, 
   Serializable {
      
   private BackendInterface backInterface;

   // SeminarProxy constructor
   public SeminarProxy( BackendInterface inputInterface )
   {
      backInterface = inputInterface;
   }

   // get Seminar for given date through BackendInterface
   public Seminar getSeminar( String date )
   {
      // get Seminar from service through BackendInterface
      try {
         return backInterface.getSeminar( date );
      }

      // handle exception communicating with back-end service
      catch ( RemoteException remoteException ) {
         remoteException.printStackTrace();
      }

      return null;
      
   } // end method getSeminar
}

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