Name: abR10010 Date: 08/24/2000




The Java Logging APIs specification for Logger.addHandler(Handler)
method says nothing about reaction upon a try to add null Handler.

But the simple nsk/addhandler test shows that null Handler is added
successfully to the logger and only much latter a NullPointerException
is thrown when a try to log any message is done. Moreover it is
difficult to understand what causes this NullPointerException to be
thrown.

It seems that there is sense to throw a NullPointerException just
a try to add null Handler is done.


See logs and test source:

% java addhandler
==> nsk/addhandler test LOG:
--> addhandler: addHandler() for Handler = null...
--> addhandler: null Handler added!
--> addhandler: logger.getHandlers()[0] = null
--> addhandler: logger.setLevel(Level.INFO) - done!
--> addhandler: logger.log(Level.INFO, "INFO_message") will be...
Exception in thread "main" java.lang.NullPointerException
at java.util.logging.Logger$PostAction.run(Logger.java:1359)
at java.security.AccessController.doPrivileged(Native Method)
at java.util.logging.Logger.log(Logger.java:373)
at java.util.logging.Logger.log(Logger.java:856)
at addhandler.run(addhandler.java:43)
at addhandler.main(addhandler.java:53)


The nsk/addhandler test sourse:
===============================================================================
// File: %Z%%M% %I% %E%
// Copyright %G% Sun Microsystems, Inc. All Rights Reserved

import java.util.logging.*;

public class addhandler {
    static LogManager glob_log_manager;
    static Logger logger;
    
    
    public static int run(String argv[], java.io.PrintStream out) {

        System.out.println("==> nsk/addhandler test LOG:");
        
        glob_log_manager = LogManager.getLogManager();
        String logger_name = "nsk.addhandler";
        logger = Logger.getLogger(logger_name);

        System.out.println("--> addhandler: addHandler() for Handler = null...");
        Handler null_test_handler = null;
        try {
            logger.addHandler(null_test_handler);
            System.out.println("--> addhandler: null Handler added!");
        }
        catch (Exception e) {
            System.out.println("--> addhandler: Exception thrown: " + e.toString());
            return 0;
        }

        System.out.println
            ("--> addhandler: logger.getHandlers()[0] = " + logger.getHandlers()[0]);

        logger.setLevel(Level.INFO);
        System.out.println
            ("--> addhandler: logger.setLevel(Level.INFO) - done!");

        System.out.println
            ("--> addhandler: logger.log(Level.INFO, \"INFO_message\") will be...");
        logger.log(Level.INFO, "INFO_message");

        glob_log_manager.flush();

        System.out.println("");
        System.out.println("==> nsk/addhandler finished!");
        return 0;
    }

    public static void main(String argv[]) {
        System.exit(run(argv, System.out) + 95/*STATUS_TEMP*/);
    }

} // end of addhandler class
===============================================================================

 
======================================================================

Name: elR10090 Date: 02/01/2001


This bug affects the following testbase_nsk test:
    nsk/logging/Logger/addHandler/addhandler001


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