perfecttime.java

网络书店的设计与实现 网络书店的设计与实现

//: c15:rmi:PerfectTime.java
// From 'Thinking in Java, 2nd ed.' by Bruce Eckel
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
// The implementation of 
// the PerfectTime remote object.
package c15.rmi;
import java.rmi.*;
import java.rmi.server.*;
import java.rmi.registry.*;
import java.net.*;

public class PerfectTime 
    extends UnicastRemoteObject
    implements PerfectTimeI {
  // Implementation of the interface:
  public long getPerfectTime() 
      throws RemoteException {
    return System.currentTimeMillis();
  }
  // Must implement constructor 
  // to throw RemoteException:
  public PerfectTime() throws RemoteException {
    // super(); // Called automatically
  }
  // Registration for RMI serving:
  public static void main(String[] args) {
    System.setSecurityManager(
      new RMISecurityManager());
    try {
      PerfectTime pt = new PerfectTime();
      Naming.bind(
        "//peppy:2005/PerfectTime", pt);
      System.out.println("Ready to do time");
    } catch(Exception e) {
      e.printStackTrace();
    }
  }
} ///:~