Herong's Tutorial Examples

XML Tutorials - Herong's Tutorial Examples
This XML tutorial book is a collection of notes and sample codes written by the author while he was learning XML himself. Topics include introduction to XML, DTD (Document Type Definition), XSD (XML Schema Definition), XPath (XML Path Language), XSL (Extensible Stylesheet Language), XSLT (XSL Transf... 2025-07-18, ≈13🔥, 3💬

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"RefillOrder" Web Service - WSDL 1.1 and SOAP 1.1
"RefillOrder" is an XML document based Web service for testing purpose only. High level information about this "Reservation" Web service: WSDL Document: RefillOrder_WSDL_11_SOAP_11_Do cument.wsdl. WSDL Version: 1.1 WSDL Binding Extension: SOAP 1.1 Transportation: SOAP 1.1 over HTTP Operation Name: R... 2023-04-04, ∼4437🔥, 1💬

Downloading and Installing GNU Unifont
A tutorial example is provided on how to download and install GNU Unifont font family on Windows 7 systems. 2023-07-19, ∼4411🔥, 5💬

💬 2023-07-19 DoublePOOF: thank you

💬 2019-10-23 Sajjad Amin: thank you

💬 2019-07-28 dipen: thank you.

💬 2015-12-06 Herong: D, maybe you can start with What Is Unicode? .

💬 2015-12-05 d gayen: i want to understand what is unicode

JVM "-verbose:class" Option
This section provides a tutorial example on how to the '-verbose:class' option on the 'java' command to see when and where classes are loaded into the JVM. 2019-07-19, ∼4400🔥, 1💬

RsaKeyGenerator.java for RSA Key Generation
This section describes the initial draft of a RSA public key and private key generation implementation using the java.math.BigInteger class. 2017-01-05, ∼4376🔥, 2💬

💬 2017-01-05 Herong: Alex, you are right. q should be selected independently from p. I will make a change in the next revision.

💬 2016-12-28 Alex T.: Using nextProbablePrime() to compute q appears somewhat risky to me: An attacker with the knowledge of N=p*q could simply comput...

OpenSSL "enc -bf-cbc" for Blowfish/CBC Encryption
Tutorial notes and example codes are provided OpenSSL 'enc -bf-cbc' command for Blowfish encryption in CBC mode. Topics include introduction of CBC (Cipher Block Chaining) cipher operation mode; Literal Key options to specify secret key and IV directly; Salted Key and Random Salt options to specify ... 2022-07-08, ∼4369🔥, 2💬

💬 2020-09-24 ajmal: 123

What Is a Digital Signature?
This section describes what is a digital signature and what is the process of generating and verifying digital signature from a message. 2020-02-23, ∼4358🔥, 4💬

💬 2020-02-23 Herong: Sanjay, you are welcome!

💬 2020-02-17 Sanjay: Thank u so much

💬 2019-01-29 nilo: Hola

💬 2016-04-26 santosh patil: Its easy to understand

Manage Keychains with Commands
This section provides a quick introduction on how to manage keychains with command line tools. 2022-10-01, ∼4333🔥, 0💬

Lucky Wedding Dates: 2011 - 2020
Where to find lucky wedding dates for year 2011 to 2020? Lucky wedding dates for year 2011 to 2020: Lucky Wedding Dates: 2011 - Year of the Rabbit Lucky Wedding Dates: 2012 - Year of the Dragon Lucky Wedding Dates: 2013 - Year of the Snake Lucky Wedding Dates: 2014 - Year of the Horse Lucky Wedding ... 2025-03-11, ∼4328🔥, 1💬

💬 2025-03-11 8*8=64: Jane Jin Lee ‘s real birthday is January 17,1991. And Eric Espana Cuellar’s real birthday is October 2,1991. Their lucky wedding...

getSelectedItem() - Selected Item of Combo Box
This section provides a tutorial example on how to use the getSelectedItem() method to know which option is selected from a combo box. 2022-10-01, ∼4322🔥, 0💬

Removing IE Addon "Groove GFS Browser Helper"
This section provides a tutorial example on how to disable and remove 'Groove GFS Browser Helper' addon from Internet Explorer. 2019-03-02, ∼4298🔥, 4💬

💬 2019-03-02 Herong: Kurteb, try to close IE, then delete the file. Or restart your PC in safe mode to delete the file.

💬 2019-02-26 Kurteb: after disabling it, cannot delete it from the folder, even using Revo or Ccleaner.

💬 2017-07-15 Herong: EEZEE66, maybe ccleaner is just reporting that the registry entry of the plug is in still exists, not actively running in IE.

💬 2017-07-14 EEZEE66: I found that even disabling it in manage add ons really didn't turn it off. I used ccleaner in tools choose browser plug ins and...

Archived: Install ActivePerl v5.8.8 on Windows Systems
This section provides a tutorial example on how to install ActivePerl v5.8.8 on a Windows XP system. 2016-04-02, ∼4294🔥, 1💬

💬 2016-04-02 rimpi: perl

Variable Declaration and "Dim" Statement
This section provides a quick introduction of what is a variable and how variable can be declared explicitly with a Dim statement and implicitly with an assignment statement. 2017-12-30, ∼4290🔥, 3💬

💬 2014-12-14 Herong: Peter, Yes, you are correct. DIM is an abbreviation for "Declare in Memory", see " Siebel VB Language Reference " published by O...

💬 2014-12-01 Peter: Ehm DIM stands for "dimension"? Or perhaps it's an abbreviation for "Declare in memory"..

Chinese Horoscopes - The Ox
The Ox Those born under the influence of the Ox are fortunate to be stable and persevering. The typical Ox is a tolerant person with strong character. Not many people could equal the resolution and fearlessness the Ox exhibits when deciding to accomplish a task or an objective. As we used this great... 2021-09-30, ∼4286🔥, 0💬

Shift-JIS Encoding
This section provides a quick introduction of Shift-JIS, also called MS Kanji, encoding, which maps a JIS X0208 character to a 2-byte sequence using a complicated schema designed by Microsoft. 2025-10-22, ∼4283🔥, 11💬

💬 2025-10-22 hammond: チョータノシー

💬 2022-03-12 ddfdfd: hey how are you

💬 2021-12-01 lakshay: what is shift-jis encoding

💬 2020-09-18 Utkarsj: hello hi bye

💬 2020-04-03 Qqqq: スーパー

(More comments ...)

System Startup Selections - Normal and Diagnostic Startups
This section describes 3 startup modes provided by the system configuration tool 'msconfig.exe' and how to use the Diagnose Startup mode. 2016-04-30, ∼4261🔥, 1💬

💬 2015-12-14 bazzah: evoking the blackvomit.

EC Key in PEM File Format
This section provides a tutorial example on the EC key PEM file format. EC domain parameters are stored together with the private key. 2023-09-17, ∼4251🔥, 1💬

💬 2023-09-17 ecformat: this is to test EC format

Lucky Wedding Dates: 2031 - Year of the Boar
Where to find lucky wedding dates for year 2031? Lucky Wedding Dates: 2031 - Year of the Boar ⇒ Lucky Wedding Dates: 2032 - Year of the Rat ⇐ Lucky Wedding Dates: 2031 - 2040 ⇑ Lucky Wedding Dates: 2031 - 2040 ⇑⇑ Wedding Date - The Most Important Date of Your Life 2021-07-27, ∼4245🔥, 0💬

Chinese Horoscopes - The Dog
The Dog The Dog is a giving, compassionate personality. He offers kind words, support and advice to friends and family. He is a listener, always available to lend an ear or a shoulder to a friend in need. Often Dogs know more about their friends than their friends know about them or even themselves!... 2021-01-14, ∼4234🔥, 0💬

Accessing Oracle Server through Web Interface
This section describes how to access an Oracle Server through its Web interface. 2022-11-15, ∼4231🔥, 0💬

新冠病毒疫苗种类和工作机制
新冠病毒疫苗有哪些种类？各种疫苗的工作机制是什么？各种疫苗有哪些特点？下面我们对这些问题进行初步的解答：什么是全病毒疫苗什么是病毒载体疫苗什么是核酸疫苗什么是蛋白疫苗新冠疫苗一览表阿斯利康新冠疫苗中国生物新冠疫苗辉瑞新冠疫苗科兴生物新冠疫苗莫德纳新冠疫苗 ⇒ 什么是全病毒疫苗 ⇐ 新冠病毒感染过程 ⇑⇑ 新冠病毒(SARS... 2021-02-10, ∼4206🔥, 0💬

Illustration of RSA Algorithm: p,q=7,19
This section provides a tutorial example to illustrate how RSA public key encryption algorithm works with 2 small prime numbers 7 and 19. 2016-02-29, ∼4206🔥, 3💬

💬 2015-11-01 Herong: Jun, AES algorithm is added now, see Introduction to AES (Advanced Encryption Standard) .

💬 2015-10-17 Herong: Jun, thank you for pointing out the mistake. I will correct it in the next version. AES will also be included.

💬 2015-10-16 jun: thanks a lot. your book makes everything clear for me except that I have not found a char for AES. By the way, I think "Generati...

Differences between "Object" and "Array"
This section provides a quick description of similarities and differences of 'Array' and 'Object'. A tutorial example is provided on how to compare an 'Array' object to an 'Object' object. 2021-02-11, ∼4196🔥, 6💬

💬 2019-09-12 jagdish: test

Open Firewall for MySQL Server on CentOS
This section provides a tutorial example on how to setup MySQL server and firewall to client computers to use TCP/IP connections on CentOS 8 systems. 2022-10-01, ∼4193🔥, 0💬

Chinese Horoscopes - The Pig/Boar Personality
People born in the year of the pig are steady and resolute in doing things, and honest and warm-hearted to other people. Competent and persistent as they are, they will spare no efforts in fulfilling any job assigned to them. Though simple-minded, they always have their own opinions. They hope that ... 2021-01-17, ∼4183🔥, 0💬

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