Jython Essentials
by Noel Rappin, Samuele Pedroni

The unconfirmed error reports are from readers.  They have not yet been 
approved or disproved by the author or editor and represent solely the
opinion of the reader.

Here's a key to the markup:
        [page-number]: serious technical mistake
        {page-number}: minor technical mistake
        <page-number>: important language/formatting problem
        (page-number): language change or minor formatting problem
        ?page-number?: reader question or request for clarification

This page was updated January 26, 2004.


UNCONFIRMED  errors and comments from readers: 


(5)  Section "Adding Behavior";
Beginning of second sentence of section: "We I (sic) want it to place
some text in the text field depending..."


(33)  2nd paragraph, 1st sentence;
sentence reads "...all in-place modification operations that are defined on lists
raise a built-in TypeError exception."

should read "... defined on tuples raise a built-in TypeError exception."

(s/lists/tuples/)


[33]  pg. 33, paragraph 2;
page 33 says "Tuples offer no methods..."

page 36, paragraph 4 reads "The methods count and index discussed for lists and
tuples are also defined for strings..."

Either tuples do offer methods, or the language is confusing.


{57}  5th  paragraph (2nd paragraph from the bottom);
the output for the code:

for x in range(3):
    print x

should be

0
1
2

instead of

1
2
3


(69)  4th paragraph (indented);
In the last sentence, it says, "...raises a StopIter exception,..."

"StopIter" should be "StopIteration."


[73,77,78,79]  anywhere 2 underscores appear e.g. __init__, __main__, __future__;
You should typeset so that it's clear that __main__ has 2 underscores before and 2
after, this wouldn't be obvious to somebody starting in Python.


(115)  Code listing;
The call to i.close-() is an error. Should be i.close()


{147}  Example 9-2;
It is important to register the default JFrame behavior on close.  By default JFrame
just hides when the window closes... so you may end up with hanging processes.

Adding the following line registers that you want to exit the application when you
close the window:

self.setDefaultCloseOperation(self.EXIT_ON_CLOSE)


(153)  self.htmlPane = swing.JEditorPane(urlString, editable=0,
hyperlinkUpdate=self.followHyperlink, size=(400,400));
Clicking on hyperlinks in the Html_Browser.py does not fire the followHyperlink
function.

Using Windows XP, with jdk1.4, and jython 2.1.


(192)  line that begins: "Matches any alphanumeric";
a-zA-z0-9_  should read a-zA-Z0-9_
     *

{247}  Section "Unicode strings";
The built-in funtion is spelled chr(), not char()


(272)  2nd column middle;
range() is not listed in the index