yesnocounterimpl.java

Java the UML Way 书中所有源码

/*
 * YesNoCounterImpl.java   E.L. 2001-08-25
 *
 */

import java.rmi.*;
import java.rmi.server.*;

class YesNoCounterImpl extends UnicastRemoteObject implements YesNoCounter {
  private int numberOfYes = 0;
  private int numberOfNo = 0;

  public YesNoCounterImpl() throws RemoteException {
  }

  public synchronized void increaseNumberOfYes() throws RemoteException {
    System.out.println("The number of yes votes was increased by 1");
    numberOfYes++;
  }

  public synchronized void increaseNumberOfNo() throws RemoteException {
    System.out.println("The number of no votes was increased by 1");
    numberOfNo++;
  }

  public synchronized void increaseNumberOfYes(int increase) throws RemoteException {
    System.out.println("The number of yes votes was increased by " + increase);
    numberOfYes += increase;
  }

  public synchronized void increaseNumberOfNo(int increase) throws RemoteException {
    System.out.println("The number of no votes was increased by " + increase);
    numberOfNo += increase;
  }

  public synchronized int getNumberOfYes() throws RemoteException {
    return numberOfYes;
  }

  public synchronized int getNumberOfNo() throws RemoteException {
    return numberOfNo;
  }
}