title: java logger to one file over several classes and packages
body: <p>I'm trying to figure out how to use the java.util.logging features.  All of the tutorials show how to log to a log file from the main class, but I cannot figure out how I can log to one file in various classes.  I have a web service and a web service client and I'd like to be able to log errors on the web service while using the web service client.  </p>
  
  <p>I tried creating a logger class but I ended up with 38 empty log files.  How should I create one logger that's called in each of my classes on the web service?  The web service has two different packages and various classes.</p>
  
  <p>In my searching I've come across the idea for a singleton logger class.  I'm trying to figure out how to implement it:</p>
  
  <pre><code>public class Logger{
  
  private static Logger self = new Logger();
  
  //empty private constructor
  private Logger(){
  
  }
  
  //synchronized getInstance
  public static synchronized Logger getInstance(){
      if (self == null)
          self = new Logger();
      return self;
  }
  
  //prevent cloning
  public Object clone() throws CloneNotSupportedException {
      throw new CloneNotSupportedException(); 
  }
  
  //synchronized logging
  public synchronized void debug(String msg){
  
  }
  public synchronized void info(String msg){
  
  }
  public synchronized void fatal(String msg){
  
  }
  </code></pre>
  
  <p>}</p>
  
  <p>To call this in my other classes, would I need to create a filehandler in each class?</p>