Java file locking mechanism for file based process communication

Question

I have two java process (JAR) one is writing to a text file on every 1 min and another is reading that file and call a web service to store data in database.

Is ther

Answer 1

Maybe this class can help you http://docs.oracle.com/javase/7/docs/api/java/nio/channels/FileLock.html

Edit: This post might already be covering the subject How can I lock a file using java (if possible)

Exemple:

FileInputStream in = new FileInputStream(file);
try
{
    java.nio.channels.FileLock lock = in.getChannel().lock();
    try
    {
        //write
    }
    finally
    {
        lock.release();
    }
}
finally 
{
    in.close();
}

Now in the reading process:

FileInputStream in = new FileInputStream(file);
try
{
    FileLock lock = in.getChannel().tryLock();
    if (lock == null)
    {
        //file is locked, wait or do something else
    }
    else
    {
        try
        {
            //read
        }
        finally
        {
            lock.release();
        }
    }
}
finally 
{
    in.close();
}