Re: almost ther ...

From:

Lew <lew@lewscanon.nospam>

Newsgroups:

comp.lang.java.help

Date:

Fri, 15 Jun 2007 12:01:51 -0400

Message-ID:

<MJednWWtQsxtKu_bnZ2dnUVZ_tSunZ2d@comcast.com>

Lew wrote:

at least log the Exception.

For example, assuming log4j:

import org.apache.log4j.Logger;
public class SomethingOrOther
{
  private Logger logger = Logger.getLogger( getClass() );
  public static void main( String [] args )
  {
   try
   {
     doSomethingThatMightThrowAnException();
   }
   catch( AnException exc )
   {
     String msg = "AnException: "+ exc;
     logger.error( msg ); // /* or use */ System.err.println( msg );
   }
  }
}

I made several mistakes in this example, at least one carelessly. It wasn't
meant to be compilable anyway, but I really shouldn't have mixed static and
instance stuff:

import org.apache.log4j.Logger;
public class SomethingOrOther
{
   static class AnException extends Exception
   {
    public AnException(){}
    public AnException( String msg ){ super( msg ); } // other two omitted
   }
   private final Logger logger = Logger.getLogger( getClass() );
   private void doSomething() throws AnException
   {
     throw new AnException("oops");
   }
   public final void handle()
   {
    try
    {
      doSomething();
      System.out.println( "Success" );
    }
    catch( AnException exc )
    {
      String msg = "AnException: "+ exc;
      logger.error( msg ); // /* or use */ System.err.println( msg );
    }
   }
   public static void main( String [] args )
   {
     SomethingOrOther soo = new SomethingOrOther();
     soo.handle();
   }
}

--
Lew