converterclient.java

卡内基梅隆大学软件工程课件,很全面

/*
 *
 * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * This software is the proprietary information of Sun Microsystems, Inc.  
 * Use is subject to license terms.
 * 
 */

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import java.math.BigDecimal;

public class ConverterClient {

   public static void main(String[] args) {
       try {
           Context initial = new InitialContext();
           Context myEnv = (Context)initial.lookup("java:comp/env");
           Object objref = myEnv.lookup("ejb/SimpleConverter");

           ConverterHome home = 
               (ConverterHome)PortableRemoteObject.narrow(objref, 
                                            ConverterHome.class);

           Converter currencyConverter = home.create();

           BigDecimal param = new BigDecimal ("100.00");
           BigDecimal amount = currencyConverter.dollarToYen(param);
           System.out.println(amount);
           amount = currencyConverter.yenToEuro(param);
           System.out.println(amount);

           System.exit(0);

       } catch (Exception ex) {
           System.err.println("Caught an unexpected exception!");
           ex.printStackTrace();
       }
   } 
}