com.mchange.v2.holders.SynchronizedIntHolder Maven / Gradle / Ivy
/*
* Distributed as part of mchange-commons-java v.0.2.3
*
* Copyright (C) 2012 Machinery For Change, Inc.
*
* Author: Steve Waldman
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1, as
* published by the Free Software Foundation.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this software; see the file LICENSE. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
package com.mchange.v2.holders;
import java.io.*;
import com.mchange.v2.ser.UnsupportedVersionException;
public class SynchronizedIntHolder implements ThreadSafeIntHolder, Serializable
{
transient int value;
public SynchronizedIntHolder( int value )
{ this.value = value; }
public SynchronizedIntHolder()
{ this(0); }
public synchronized int getValue()
{ return value; }
public synchronized void setValue(int value)
{ this.value = value; }
public synchronized void increment()
{ ++value; }
public synchronized void decrement()
{ --value; }
//Serialization
static final long serialVersionUID = 1; //override to take control of versioning
private final static short VERSION = 0x0001;
private void writeObject(ObjectOutputStream out) throws IOException
{
out.writeShort(VERSION);
out.writeInt(value);
}
private void readObject(ObjectInputStream in) throws IOException
{
short version = in.readShort();
switch (version)
{
case 0x0001:
this.value = in.readInt();
break;
default:
throw new UnsupportedVersionException(this, version);
}
}
}