initialization activities such as adding Handlers, Filters and Formatters to loggers...

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This can be achieved by setting the config
property in the properties file. You can have multiple classes whose
initialization can be done using the config property. These classes should
be specified using space-delimited values like this: Feedback
config = ConfigureLogging1 ConfigureLogging2 Bar Baz

Classes specified in this fashion will have their default constructors
invoked. Feedback
Summary
Although this has been a fairly thorough introduction to the logging API,
it doesn’t include everything. For instance, we haven’t talked about the
LogManager or details of the various built-in handlers such as
MemoryHandler, FileHandler, ConsoleHandler, etc. You should
go to the JDK documentation for further details. Feedback
Debugging
Although judicious use of System.out statements or logging information
can produce valuable insight into the behavior of a program15, for difficult
problems this approach becomes cumbersome and time-consuming. In
addition, you may need to peek more deeply into the program than print
statements will allow. For this, you need a debugger. Feedback

15 I learned C++ primarily by printing information, since at the time I was learning there were no debuggers available.
Chapter 15: Discovering problems
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In addition to more quickly and easily displaying information that you
could produce with print statements, a debugger will also set breakpoints
and then stop the program when it reaches those breakpoints. A debugger
can also display the state of the program at any instant, view the values of
variables that you’re interested in, step through the program line by line,
connect to a remotely running program, and more. Especially when you
start building larger systems (where bugs can easily become buried), it
pays to become familiar with debuggers. Feedback
Debugging with JDB
The Java Debugger (JDB) is a command line debugger that ships with
the JDK. JDB is at least conceptually a descendant of the Gnu Debugger
(GDB, which was inspired by the original Unix DB), in terms of the
instructions for debugging and its command line interface. JDB is useful
for learning about debugging and performing simpler debugging tasks,
and it’s helpful to know that it’s always available wherever the JDK is
installed. However, for larger projects you’ll probably want to use a
graphical debugger, described later. Feedback
Suppose you’ve written the following program:
//: c15:SimpleDebugging.java
// {ThrowsException}
public class SimpleDebugging {
private static void foo1() {
System.out.println("In foo1");
foo2();
}
private static void foo2() {
System.out.println("In foo2");
foo3();
}
private static void foo3() {
System.out.println("In foo3");
int j = 1;
j--;
int i = 5 / j;
}
public static void main(String[] args) {
foo1();
}
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Thinking in Java
www.BruceEckel.com

} ///:~

If you look at foo3( ), the problem is obvious—you’re dividing by zero.
But suppose this code is buried in a large program (as is implied here by
the sequence of calls) and you don’t know where to start looking for the
problem. As it turns out, the exception that will be thrown will give
enough information for you to locate the problem (this is just one of the
great things about exceptions). But let’s just suppose that the problem is
more difficult than that, and that you need to drill into it more deeply and
get more information than what an exception provides. Feedback
To run JDB, you must tells the compiler to generate debugging
information by compiling SimpleDebugging.java with the –g flag.
Then you start debugging the program with the command line:
jdb SimpleDebugging

This brings up JDB and gives you a command prompt. You can view the
list of available JDB commands by typing a ‘?’ at the prompt. Feedback
Here’s an interactive debugging trace that shows how to chase down a
problem:
Initializing jdb ...
> catch Exception

The > indicates JDB is waiting for a command, and the commands typed
in by the user are shown in bold. The command catch Exception causes
a breakpoint to be set at any point where an exception is thrown
(however, the debugger will stop anyway, even if you don’t explicitly give
this comment—exceptions appear to be default breakpoints in JDB).
Feedback
Deferring exception catch Exception.
It will be set after the class is loaded.
> run

Now the program will run till the next breakpoint, which in this case is
where the exception occurs. Here’s the result of the above run command:
run SimpleDebugging
>
VM Started: In foo1
In foo2
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In foo3
Exception occurred: java.lang.ArithmeticException
(uncaught)"thread=main", SimpleDebugging.foo3(), line=18
bci=15
18 int i = 5 / j;

The program runs till line 18 where the exception generated, but jdb does
not exit when it hits the exception. The debugger also displays the line of
code that caused the exception. You can list the point where the execution