Re: How to implement this?

From:
 xz <zhang.xi.cn@gmail.com>
Newsgroups:
comp.lang.java.programmer
Date:
Tue, 07 Aug 2007 05:23:20 -0000
Message-ID:
<1186464200.688352.268520@x35g2000prf.googlegroups.com>
On Aug 6, 4:56 pm, Lew <l...@lewscanon.nospam> wrote:

Chris wrote:

The latter likely avoids the threading complications of the unsynchronized
test-and-set idiom you presented. In a case like this there is no advantage
to lazy initialization.

If your Logger class is from log4j it is already thread safe, of course.

One more approach is a static initializer:

public class Tester
{
    private static final BufferedWriter logger;
    static
    {
      String path = "/home/xi/Desktop/D2V/validation/";
      try
      {
       logger = new BufferedWriter( new FileWriter(
                    new File( path, "log" )));
      }
      catch ( IOException exc )
      {
       String msg = "Cannot open log file \""+ path +"log\"";
       throw new IllegalStateException( msg, exc );
      }
    }
...

}

This is like using the static init() method without naming the method. The
body of the static initializer could be the body of a static initialization
method like initLogger().


This is more close to what I wanted originally.
Thank you!

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