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What Is Cryptography?
This section describes what is cryptography - The study of techniques related to all aspects of data security.
2017-02-18, 1793👍, 5💬

💬 2017-02-18 gabu: ggoodd

💬 2016-11-17 mohamed: yes

💬 2015-10-20 Herong: Hi Ian, the Rail Fence cipher is very simple example of encryption we can do manually. See the Transposition cipher page at wiki...

💬 2015-10-19 Ian T. Lee: Can you give me a simple example of how to do cryptography manually?

💬 2015-08-06 arnav: good

File_Input_Output_Test.php - File Input/Output Examples
This section provides a tutorial example script on how to use file input and output functions like fopen(), fread(), fwrite(), and fclose(). The example script copies any file in binary mode.
2017-02-18, 130👍, 2💬

Static, Client-Side and Server-Side Scripting Pages
This section describes differences of static content, client-side scripting code, and server-side scripting code.
2017-02-17, 107👍, 1💬

Using SO_LINGER Socket Option
A tutorial example is provided to show how to use the SO_LINGER socket option to prevent the server closing the socket too soon after writing the response to the socket.
2017-02-16, 224👍, 2💬

💬 2017-02-16 Herong: Gaurav, you can to follow "keytool -genkey" - Generating Keys and Self-Signed Certificates tutorial to generate herong.jks.

💬 2017-02-15 Gaurav Kumar: Where can i get this file herong.jks?

mysqladmin - MySQL Admin Tool
This section describes how to use MySQL admin tool to check server status and other admin tasks.
2017-02-16, 195👍, 2💬

💬 2017-02-16 Herong: Jack, thanks for sharing the information about dbForge Studio.

💬 2017-02-14 Jack: There is also a good mysql admin tool -dbForge Studio for MySQL (https://www.devart.com/dbforge/mysq l/studio/features.html).I l...

CipherDES.java - A Java Implementation of DES
This section provides a tutorial Java program, CipherDES.java - A Java Implementation of DES encryption and decryption algorithm.
2017-02-16, 8444👍, 9💬

💬 2017-02-16 Herong: Andro, I think implementation of DES using String methods will be slower than using byte and int operations.

💬 2017-02-12 Andro: Good done. I have created my own DES with benefits of string methods in Java. My DES receives binary string and key, then cipher...

💬 2016-03-03 Dede: Helps a lot, currently developping a mobile application that has to do with encryption. Thanks

💬 2015-10-16 Herong: Skip, Good luck on your study!

💬 2015-10-15 Skip: I'm taking a graduate course in cryptography and this was extremely helpful for going from DES visual to DES in java. I really a...

(More comments ...)

"regedit.exe" - Changing Registry Values
This section provides a tutorial example on how to change registry values for the FreeCell game program, like increase the total number of games won.
2017-02-16, 310👍, 2💬

💬 2017-02-16 Herong: Johnny, The example given in this tutorial was based on Windows XP. FreeCell registry key will be at different locations in othe...

💬 2017-02-11 Johnny Jevidetti: What version of Windows are you using? Trying the steps you have outlined, my regedit is much different than the one you describ...

GetMortgagePayment - Usage Description
This section describes the free Web service GetMortgagePayment provided by WebserviceX.NET. GetMortgagePayment allows you to calculate mortgage payments.
2017-02-11, 186👍, 2💬

💬 2017-02-11 Herong: Sam, the GetMortgagePayment service is working. Can you show us the error you are getting?

💬 2017-02-04 sam: hello admin getMortgage payment service is not working. it is displaying xml tag exception while importing into soap UI can you ...

Best Chinese Music - 中国经典音乐
This is a collection of best and well-known Chinese music works selected by the author. Key words include Chinese, Music, Classic, Best, Well-known, Song, Traditional, Modern, Download, Listen, 中国, 音乐, 歌曲, 经典, 传统, 现代, 下载, 收听.
2017-02-11, 1033👍, 2💬

💬 2017-02-11 Herong: Deyi, which ones are you interested? You can listen to most of them online for free.

💬 2017-02-07 Deyi Hu: Dr. Yang: Is there a way for me to purchase the pieces of music that you have collected here on this page?

Calling createStatement() and executeQuery
This section describes how to run a SELECT query statement with createStatement() and executeQuery().
2017-02-08, 280👍, 2💬

Using JAR Files in Java Class Paths
This section provides a tutorial example on how to use JAR files in class paths during Java compilation and execution time.
2017-02-04, 208👍, 3💬

💬 2017-02-04 Herong: Chris, Thanks for sharing the information.

💬 2017-02-03 Chris: For unix, on the last command, ".;" changes to ".:".

PDF Printing Version
Information on how to obtain the PDF version of this book for printing.
2017-01-31, 450👍, 3💬

💬 2017-01-31 Linda Collins: Need to get cracking.

💬 2016-02-03 andi: good doc

Viewing Certificate Path
This section provides a tutorial example on how to view certificate path when visiting an 'https' Web site in IE 9. The top certificate in a certificate path is the CA certificate, which is trusted automatically.
2017-01-31, 282👍, 1💬

💬 2017-01-31 kishor: -----BEGIN CERTIFICATE----- MIIDqjCCApICCQC6MOh9nHUvUjANBgkqhkiG 9w0BAQUFADCBljELMAkGA1UEBhMCVVMxETAPBgNVBAgTCENvbG9yYWRvMRMwEQY. ..

Web Server Log Files and Analysis Tool - "Analog"
This chapter provides an introduction of 'Analog' - Web log file analysis tool. Topics include IIS and Apache log file samples, installing and configuring 'Analog', setting up 'Analog' to process Apache log files.
2017-01-29, 147👍, 1💬

Using MD5 Message Digest in Java
This section provides a tutorial example on how to use MD5 message digest algorithm in Java. The JDK JCE package offers the MD5 algorithm through a generic message digest class, javax.security.MessageDigest.
2017-01-27, 137👍, 2💬

Chinese Astrology
This section describes what is Chinese astrology.
2017-01-27, 297👍, 1💬

💬 2017-01-27 Mikage: Meaningful comments

'javascript:' Pseudo-URL Addresses
This section describes what is a 'javascript:' pseudo-URL address and provides several interesting examples of 'javascript:' URLs.
2017-01-25, 631👍, 3💬

💬 2016-03-01 Anuag Dobade: thanks really helpful blog

Entering Non ASCII Characters in JSP Pages
This section describes rules on how non-ASCII characters can be entered in JSP pages and displayed correctly on Web browsers.
2017-01-25, 294👍, 3💬

💬 2017-01-25 abc: ทดสอบภาษาไทย

💬 2016-06-19 Herong: That was a good test. ☺

💬 2016-06-08 dfgd: <script>alert(document.cookie)< ;/script>

Windows 7: Firewall Alert on Blocked Connection
This section provides a tutorial example on how Windows Firewall alerts you when it detects a blocked connection on Windows 7 system.
2017-01-24, 413👍, 2💬

💬 2017-01-24 tenani: thanx for showing scurity alert ans explaining step by step. very clear and useful

💬 2016-09-29 Manjit Chana: Thanks for exact information to enable me deal with above alert issue.

Installing JDK 1.8 on Windows System
This chapter provides tutorial notes on installing JDK (Java Development Kit) on Windows systems. Topics include downloading and installing Java SE Development Kit 8u45; compiling and executing Java programs; setting up JAVA_HOME environment variable.
2017-01-23, 1210👍, 3💬

💬 2017-01-23 aaa: ok

💬 2015-12-29 raghu: thanks

'jstack' - Stack Tracer to Generate Thread Dump
This section provides a tutorial example on how to use the 'jstack' tool to generate a thread dump (print all running threads and their stack traces).
2017-01-23, 152👍, 1💬

Including VBScript Codes as External Files
This section provides a quick description of how to save VBScript codes into separate files and include them into HTML documents with 'script' tags. A tutorial example is provided on calling a function stored in a separate VBScript file.
2017-01-21, 614👍, 2💬

💬 2017-01-21 Herong: Jason, I am not sure if that is doable to install a printer with a VB script on a Web page. May be make the image as a download ...

💬 2017-01-19 Jason: Have vb script created that will map network printers on our network, created page on IIS for users to use and want them to clic...

Operations on "byte" Data Type Values
This section provides a tutorial example on how 'byte' values are casted to 'int' values when they are involved in arithmetic, comparison and bitwise operations.
2017-01-21, 533👍, 2💬

💬 2017-01-21 Herong: Anonymous, Good question. But what do you expect an operation of byte+byte will do?

💬 2017-01-19 Anonymous: Reason for why byte doesn't holds good the + operator directly.

GetCitiesByCountry - Get Cities by Country
This chapter provides a quick introduction of the free Web service, GetCitiesByCountry, returning a list of all cities of a given country. Topics include usage description of GetCitiesByCountry; request message sample; response message sample.
2017-01-21, 690👍, 4💬

💬 2017-01-21 Herong: Faisal, do you know how to make Web service calls in C#?

💬 2017-01-19 Faisal: how to use this web service in web forms ASP.Net Using C#

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