The errata list is a list of errors and their corrections that were found after the product was released. If the error was corrected in a later version or reprint the date of the correction will be displayed in the column titled "Date Corrected".
The following errata were submitted by our customers and approved as valid errors by the author or editor.
| Version |
Location |
Description |
Submitted By |
Date Submitted |
Date Corrected |
| Printed |
Page xii
paragraph at top of page |
Changed the URL for the JSDK from:
http://jserv.java.sun.com
To:
http://java.sun.com/products/servlet/
|
Anonymous |
|
Dec 01, 1998 |
| Printed |
Page xii
paragraph at top of page |
Changed the URL for the JSDK from:
http://jserv.java.sun.com
To:
http://java.sun.com/products/servlet/
|
Anonymous |
|
Jan 01, 1999 |
| Printed |
Page 7
In the fourth paragraph, last line |
|
Anonymous |
|
|
| Printed |
Page 7
2nd paragraph under "Support for Servlets" |
Changed the URL for the JSDK from:
http://jserv.java.sun.com
To:
http://java.sun.com/products/servlet/
|
Anonymous |
|
Dec 01, 1998 |
| Printed |
Page 7
2nd paragraph under "Support for Servlets" |
Changed the URL for the JSDK from:
http://jserv.java.sun.com
To:
http://java.sun.com/products/servlet/
|
Anonymous |
|
Jan 01, 1999 |
| Printed |
Page 10
first bulleted item on page, first sentence starts |
"Sun's JavaServer Toolkit and JavaServer Engine, ..."
Changed to read:
"Sun's JavaServer Engine, ..."
Also, at the end of the second sentence, changed "Java Server
Toolkit." to "JavaServer Engine."
Finally, changed the URL in the last sentence to:
http://java.sun.com/products/javaserverengine/
|
Anonymous |
|
Dec 01, 1998 |
| Printed |
Page 10
first bulleted item on page, first sentence starts |
"Sun's JavaServer Toolkit and JavaServer Engine, ..."
Changed to read:
"Sun's JavaServer Engine, ..."
Also, at the end of the second sentence, changed "Java Server
Toolkit." to "JavaServer Engine."
Finally, changed the URL in the last sentence to:
http://java.sun.com/products/javaserverengine/
|
Anonymous |
|
Jan 01, 1999 |
| Printed |
Page 20
first bulleted list item |
Changed the URL for the JSDK from:
http://jserv.java.sun.com
To:
http://java.sun.com/products/servlet/
|
Anonymous |
|
Dec 01, 1998 |
| Printed |
Page 20
first bulleted list item |
Changed the URL for the JSDK from:
http://jserv.java.sun.com
To:
http://java.sun.com/products/servlet/
|
Anonymous |
|
Jan 01, 1999 |
| Printed |
Page 20
In the first paragraph after Example 2-1, the first sentence |
used to read:
"This servlet extends the HttpServlet class and overloads
the doGet() method inherited from it."
Now reads:
"This servlet extends the HttpServlet class and overrides
the doGet() method inherited from it."
The word "overloads" has been replaced with "overrides". Also,
the word "receives" in the next sentence is now in roman font,
rather than constant width.
|
Anonymous |
|
Jan 01, 2000 |
| Printed |
Page 21
|
The second full paragraph used to read:
"...or, for educational use, http://www.sun.com/
products-n-solutions/edu/java."
The phrase was removed from the fifth sentence.
|
Anonymous |
|
Mar 01, 2000 |
| Printed |
Page 27
A footnote was added to the end of the first |
paragraph under "Server-Side Includes". It reads:
"Note that support for SSI has been disapproved since this book
originally went to press, so you may not want to spend much time
on this material."
|
Anonymous |
|
Jul 01, 2000 |
| Printed |
Page 30
In the footnote, "for a servlets" should be changed to "for a servlet" |
|
Anonymous |
|
|
| Printed |
Page 30
|
The footnote at the bottom of the page, 2nd line, used to read:
...generate output for a servlets used ...
It now reads:
...generate output for a servlet used ...
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 34
|
The first sentence of second paragraph should be changed to read:
"Inside doGet(), the servlet checks the content type
of the data, sets its output type, and then fetches its print
writer."
doGet should be in constant width font.
|
Anonymous |
|
|
| Printed |
Page 39
|
In Example 2-7, the last two lines of code used to read:
out.println("</H1>"
out.println("</BODY></HTML>"
Both lines were missing a right parenthesis and semicolon. They
now read:
out.println("</H1>");
out.println("</BODY></HTML>");
|
Anonymous |
|
Jan 01, 2000 |
| Printed |
Page 40
Figure 2-12 |
The figure needs to be corrected: "<HEAD>" should be
"</HEAD>", "<BODY>" should be "</BODY>", and "<HTML>" should
be "</HTML>".
|
Anonymous |
|
|
| Printed |
Page 43
|
The URL is in the footnote used to read:
"http://java.sun.com/bean/"
It now reads:
"http://java.sun.com/beans/"
|
Anonymous |
|
Jul 01, 2000 |
| Printed |
Page 45
|
In example 2-11, the second line used to read:
CLASS="HelloBean"
It now reads:
TYPE="HelloBean
|
Anonymous |
|
Apr 01, 1999 |
| Printed |
Page 52
In the first sentence of the paragraph under the first block used to |
read:
"using the servlet class"
It now reads:
"using the servlet instance".
|
Anonymous |
|
Jul 01, 2000 |
| Printed |
Page 71
In the fifth sentence under the second full bullet |
The word "last" was changed to "previous"
|
Anonymous |
|
Jul 01, 2000 |
| Printed |
Page 81
|
The first sentence of the last paragraph used to read:
"How does this involves servlets?"
It now reads:
"How does this involve servlets?"
|
Anonymous |
|
Jul 01, 2000 |
| Printed |
Page 85
Near the bottom is the code fragment |
String[] words = req.getParameterValues("word");
if (words != null)
{
for (int i = 0; i < words.length; i++)
{
String definition = getDefinition(words[i]);
out.println(word + ": " + definition); // BUG
out.println("<HR>");
}
}
the line with //BUG has been changed from "word" to "words[i]".
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 94
3rd paragraph in "Determining What Was Requested" |
", extra path information, and query string."
now reads
", and extra path information."
|
Anonymous |
|
Dec 01, 1998 |
| Printed |
Page 94
3rd paragraph in "Determining What Was Requested" |
", extra path information, and query string."
now reads
", and extra path information."
|
Anonymous |
|
Jan 01, 1999 |
| Printed |
Page 95
In the footnote, changed |
http://ds.internic.net/rfc/rfc1630.txt
To:
http://www.ietf.org/rfc/rfc1630.txt
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 97
|
Example 4-11 used to read:
while (keys.hasMoreElements() && elements.hasMoreElements()) {
bufferedWriter.write(keys.nextElement() + " " +
elements.nextElement() + "
");
}
It now reads:
while (keys.hasMoreElements() && elements.hasMoreElements()) {
String name = (String) keys.nextElement();
int[] val = (int[]) elements.nextElement();
bufferedWriter.write(name + " " + val[0] + "
");
}
|
Anonymous |
|
Mar 01, 2000 |
| Printed |
Page 100
|
In line twelve, the text should read:
...usually "HTTP/1.0" or "HTTP/1.1"
In other words, cut the three v's and replace them with
straight quotes. "HTTP/1.0" and "HTTP/1.1" should be in constant
width font.
|
Anonymous |
|
|
| Printed |
Page 104
Example 4-15 |
The line of code that checks for the "Content-Length" header field reads:
if ("Content-Length").equalsIgnoreCase(header))
There is a ')' before the dot.
The line should read:
if ("Content-Length".equalsIgnoreCase(header))
1 2 21
|
Anonymous |
|
|
| Printed |
Page 104
8th line from the bottom, changed |
... stream, you should to use getReader()
to:
... stream, you should use getReader()
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 107
2nd paragraph in "Receiving files using the input stream," changed |
http://ds.internic.net/rfc/rfc1867.txt
To:
http://www.ietf.org/rfc/rfc1867.txt
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 109
The last sentence of the second main paragraph used to |
read:
"getParameterNamess"
The second "s" has been deleted. It now reads:
"getParameterNames "
|
Anonymous |
|
Jan 01, 2000 |
| Printed |
Page 110
Line 13 from bottom, changed |
... request, a directory to saves files to, ...
to
... request, a directory to save files to, ...
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 135
Example 5-5, in the middle of the page |
Removed the following line of code:
PrintWriter out = res.getWriter();
|
Anonymous |
|
Dec 01, 1998 |
| Printed |
Page 135
Example 5-5, in the middle of the page |
Removed the following line of code:
PrintWriter out = res.getWriter();
|
Anonymous |
|
Jan 01, 1999 |
| Printed |
Page 136
Example 5-5 |
In the last line of code on the page:
// Send the page to the response s output stream
there was a missing '. It now reads "response's".
|
Anonymous |
|
Dec 01, 1998 |
| Printed |
Page 136
Example 5-5 |
In the last line of code on the page:
// Send the page to the response s output stream
there was a missing '. It now reads "response's".
|
Anonymous |
|
Jan 01, 1999 |
| Printed |
Page 139
Example 5-6, near the bottom of the page |
Removed the following line of code:
PrintWriter out = res.getWriter();
|
Anonymous |
|
Dec 01, 1998 |
| Printed |
Page 139
Example 5-6, near the bottom of the page |
Removed the following line of code:
PrintWriter out = res.getWriter();
|
Anonymous |
|
Jan 01, 1999 |
| Printed |
Page 154
Second (middle) code snippet |
the line of code that sends the "SC_INTERNAL_SERVER_ERROR" reads:
res.sendError(res.SC._INTERNAL_SERVER_ERROR);
This line contains a dot after "SC".
It should read:
res.sendError(res.SC_INTERNAL_SERVER_ERROR);
(without the dot)
|
Anonymous |
|
|
| Printed |
Page 158
In the second line of last paragraph |
PrinWriter
should read:
PrintWriter
|
Anonymous |
|
|
| Printed |
Page 189
|
The code used to read:
// Go with GZIP
res.setHeader("Content-Encoding", "x-gzip");
It now reads:
// Go with GZIP
res.setHeader("Content-Encoding", "gzip");
|
Anonymous |
|
Mar 01, 2000 |
| Printed |
Page 189
The phrase: |
"Netscape Navigator 3 and 4 on Unix and Microsoft Internet
Explorer 4 on"
was removed from the bottom of page 188.
|
Anonymous |
|
Jul 01, 2000 |
| Printed |
Page 191
3rd paragraph under "Server Push" |
Changed last sentence to read:
"Note, however, that server push is not yet supported by
Microsoft Internet Explorer, and extended use..."
|
Anonymous |
|
Dec 01, 1998 |
| Printed |
Page 191
3rd paragraph under "Server Push" |
Changed last sentence to read:
"Note, however, that server push is not yet supported by
Microsoft Internet Explorer, and extended use..."
|
Anonymous |
|
Jan 01, 1999 |
| Printed |
Page 197
The last line before the sample code in the "Hidden Form |
Fields" section used to read:
"You include hidden form files with HTML like this:"
It now reads:
"You include hidden form fields with HTML like this:"
|
Anonymous |
|
Jan 01, 2000 |
| Printed |
Page 202
End of 2nd paragraph of "Persistent Cookies," changed |
http://ds.internic.net/rfc/rfc2109.txt
To:
http://www.ietf.org/rfc/rfc2109.txt
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 214
|
The 2nd to last line the function call used to read:
"isRequestedSessionIdValue()"
Changed to:
"isRequestedSessionIdValid()"
|
Anonymous |
|
Apr 01, 1999 |
| Printed |
Page 221
The paragraph that starts with: |
A client wants "and it also want"
should read:
"and it also wants"
|
Anonymous |
|
|
| Printed |
Page 223
The first line after the heading "Retrieving Authentication |
Information" used to read:
"A server""
It now reads:
"A servlet"
|
Anonymous |
|
Jan 01, 2000 |
| Printed |
Page 225
In the paragraph before example 8-2, changed |
http://ds.internic.net/rfc/rfc1521.txt
To:
http://www.ietf.org/rfc/rfc1521.txt
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 226
The Example 8-2 code that generates the SC_UNAUTHORIZED code |
used to fail on some servers where the implementation of sendError()
is such that it doesn't allow the following WWW-Authenticate header
to be set. The fix is to call setHeader() before sendError().
Lines 7 and 8 of Example 8-2 have been transposed.
|
Anonymous |
|
Jan 01, 2000 |
| Printed |
Page 231
In the middle of Example 8-5, the following chuck of code |
// Try redirecting the client to the page he first tried to access
try {
String target = (String) session.getValue("login.target");
if (target != null)
res.sendRedirect(target);
return;
Was changed to:
if (target != null) {
res.sendRedirect(target);
return;
}
|
Anonymous |
|
Jul 01, 2000 |
| Printed |
Page 232
Fourth paragraph, first line |
Browser misspelled as "brower" in the 3/00 printing of this book.
|
Anonymous |
|
|
| Printed |
Page 232-233
Starting with the paragraph that starts "Public |
key encryption schemes have been around...", removed that
paragraph and the three that followed it and replaced them
with the following five paragraphs:
-----
Public key encryption schemes have been around for several years and
are quite well developed. Most are based on the patented RSA algorithm
developed by Ron Rivest, Adi Shamir, and Leonard Adelman. RSA uses
very large prime numbers to generate a pair of asymmetric keys (i.e.,
each key can decode messages encoded with the other). Individual keys
come in varying lengths, usually expressed in terms of the number of
bits that make up the key. 1024- or 2048-bit keys are adequate for
secure RSA communications.
Because keys are so large, it is not practical for a user to type one
into her web browser for each request. Instead, keys are stored on
disk in the form of digital certificates. Digital certificates can be
generated by software like Phil Zimmerman's PGP package, or they
can be issued by a third party. The certificate files themselves can
be loaded by most security-aware applications, such as servers,
browsers, and email software.
Public key cryptography solves the confidentiality problem because the
communication is encrypted. It also solves the integrity problem: Will
knows that the message he received was not tampered with since it
decodes properly. So far, though, it does not provide any
authentication. Will has no idea whether Jason actually sent the
message. This is where digital signatures come into play. Because
public and private keys are asymmetric, Jason can first use his
private key to encode a message and then use Will's public key to
encode it again. When Will gets the message, he decodes it first with
his private key, and then with Jason's public key. Because only
Jason can encode messages with his private key--messages that can be
decoded only with his public key--Will knows that the message was
truly sent by Jason.
This is different from simpler symmetric key systems, where a single
key is used for encoding and decoding. While asymmetric keys have the
significant advantage of allowing secure communication without ever
requiring a secure channel, they have the disadvantage of requiring
much more computational muscle. As a compromise, many encryption
systems use asymmetric public and private keys to identify each other
and then confidentially exchange a separate symmetric key for
encrypting the actual exchange. The symmetric key is usually based on
DES (Data Encryption Standard).
U.S. government restrictions currently limit symmetric key size to 56
bits (about 72 quadrillion possible keys). Messages encrypted with a
56-bit key are difficult to decode, but by no means impossible--large
networks have been used to decode such messages within a matter of
days. With the United States, however, many systems use 128-bit DES
keys (about 3.40282 x 10^38 possible keys). Because there is no known
way to decode a DES-encrypted message short of brute-force trial and
error, messages sent using large keys are very, very secure.
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 234
In the second paragraph, last line of the 3/00 printing |
The URL:
http://www.ietf.org/ietf-tls
should be:
http://www.ietf.org/rfc/rfc2246.txt
|
Anonymous |
|
|
| Printed |
Page 234
End of 1st paragraph of "Secure Sockets Layer (SSL)," changed |
http://www.consensus.com/ietf-tls
To:
http://www.ietf.org/rfc/rfc2246.txt
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 234
5th item in list: changed "asymmetric" to "symmetric" twice |
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 238
1st paragraph after itemized list: in "None of these |
approaches works very well" changed "works" to "work"
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 239
Last paragraph before "Fine-grained control," changed "can be |
signed using digital certificates." to "can be digitally signed."
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 244
In the line reads "The most compelling reason for putting a middle |
tier between a client and our ultimate date source is...". I believe that
the reference to "date" should really be "data".
|
Anonymous |
|
|
| Printed |
Page 245
In output code block, "Janet" should be changed to "Jane". |
|
Anonymous |
|
|
| Printed |
Page 251
|
The text used to read:
"thin:dbhost"
It now reads:
"thin:@dbhost"
|
Anonymous |
|
Mar 01, 2000 |
| Printed |
Page 275
A short footnote was added to the last sentence before Example 9-9. |
The text of the footnote reads:
"Note that the quality of binary stream support in database systems
and JDBC drivers can vary widely. JDBC 2.0 drivers include improved
handling of BLOB type objects, but implementation is still
inconsistent."
|
Anonymous |
|
Jul 01, 2000 |
| Printed |
Page 321
In the following lines of code |
// doPost() accepts a new message and broadcasts it to all
// the currently listening HTTP and socket clients.
the second line should be changed to read:
// the currently listening HTTP, socket, and RMI clients.
|
Anonymous |
|
|
| Printed |
Page 336
Example 10-21 |
Changed the following line:
out.println("<PARAM NAME=user VALUE=">" + user + """);
To:
out.println("<PARAM NAME=user VALUE="" + user + "">");
|
Anonymous |
|
Dec 01, 1998 |
| Printed |
Page 336
Example 10-21 |
Changed the following line:
out.println("<PARAM NAME=user VALUE=">" + user + """);
To:
out.println("<PARAM NAME=user VALUE="" + user + "">");
|
Anonymous |
|
Jan 01, 1999 |
| Printed |
Page 338
4th block of body text |
The last sentence of the paragraph that ends
"Servlet API. 2.0."
now ends:
"Servlet API."
|
Anonymous |
|
Dec 01, 1998 |
| Printed |
Page 338
4th block of body text |
The last sentence of the paragraph that ends
"Servlet API. 2.0."
now ends:
"Servlet API."
|
Anonymous |
|
Jan 01, 1999 |
| Printed |
Page 372
In the footnote, changed |
http://ds.internic.net/rfc/rfc2278.txt
To:
http://www.ietf.org/rfc/rfc2278.txt
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 376
1st paragraph of "UCS-2 and UTF-8," changed |
http://ds.internic.net/rfc/rfc2279.txt
To:
http://www.ietf.org/rfc/rfc2279.txt
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 377
|
1.1 used to read:
Chinese, Korean, Russian, and Hebrew.
Now reads:
Chinese, Korean, and Russian.
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 389
In the footnote, changed |
http://ds.internic.net/rfc/rfc2070.txt
To:
http://www.ietf.org/rfc/rfc2070.txt
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 402
In the 5th list item, changed |
http://ds.internic.net/rfc/rfc822.txt
To:
http://www.ietf.org/rfc/rfc822.txt
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 416
second paragraph under "Use a Standard Debugger" |
Changed the URL for the JSDK from:
http://jserv.java.sun.com
To:
http://java.sun.com/products/servlet/
|
Anonymous |
|
Dec 01, 1998 |
| Printed |
Page 416
second paragraph under "Use a Standard Debugger" |
Changed the URL for the JSDK from:
http://jserv.java.sun.com
To:
http://java.sun.com/products/servlet/
|
Anonymous |
|
Jan 01, 1999 |
| Printed |
Page 422
The line of body text after Example 13-10, |
"HTTPClient"
Has been changed to:
"HttpClient"
|
Anonymous |
|
Apr 01, 1999 |
| Printed |
Page 422
The second bulleted list item |
"server_root"
is now in Courier-Italic (twice).
|
Anonymous |
|
Apr 01, 1999 |
| Printed |
Page 442
In the "Description," changed |
http://ds.internic.net/rfc/rfc2045.txt
To:
http://www.ietf.org/rfc/rfc2045.txt
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 454
In the description for "doPut()" changed |
http://ds.internic.net/rfc/rfc2068.txt
To:
http://www.ietf.org/rfc/rfc2068.txt
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 465
The second heading on this page was changed from |
"getLastAccessTime()" to
"getLastAccessedTime()"
|
Anonymous |
|
Jul 01, 2000 |
| Printed |
Page 470
In the description for getRequestUrl(), changed |
", extra path information, and query string."
to
", and extra path information."
|
Anonymous |
|
Apr 01, 1999 |
| Printed |
Page 472
In the paragraph before table C-2 changed |
http://ds.internic.net/rfc/rfc2068.txt
To:
http://www.ietf.org/rfc/rfc2068.txt
|
Anonymous |
|
Jul 01, 1999 |
| Printed |
Page 472
|
The text in Appendix C used to read:
"Table C-2 lists the HTTP status code constants defined by
the HttpServletRequest interface..."
It now reads:
"Table C-2 lists the HTTP status code constants defined by
the HttpServletResponse interface..."
|
Anonymous |
|
Mar 01, 2000 |
| Printed |
Page 484
In Appendix E, the charsets for Chinese were reversed. |
Simplified/Mainland is now GB2312, and Traditional/Taiwan is
Big5.
|
Anonymous |
|
Apr 01, 1999 |
