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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Configuring Crossover Cable Network
This section provides a tutorial example on how to configure a crossover cable network. 2016-10-06, ∼7078🔥, 2💬

💬 2016-10-06 Herong: John, good question, and I don't know the answer. Maybe someone else can help to answer.

💬 2016-09-29 John Wboson: Two computers, one headless - no keyboard, no mouse, no monitor would be a welcome example through a cross-over or IPV6 connecti...

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. 2024-02-22, ∼7063🔥, 8💬

💬 2024-02-22 Haris Nadeem: good

💬 2022-04-15 1: 1

💬 2017-01-23 aaa: ok

💬 2015-12-29 raghu: thanks

javax.swing.event.MenuListener - Menu Listener Interface
This section provides a tutorial example on how to use javax.swing.event.MenuListener ,menu listener interface, to catch events fired by JMenu objects. 2016-08-02, ∼7037🔥, 3💬

💬 2016-08-02 Herong: Tony, I believe that * is a wildcard, meaning all classes in the javax.swing package.

💬 2016-07-20 tony narloch: Hi, I am curious as to what the * denotes. Is that a wildcard, or meant to any/all things associated with javax.swing?

Installing AdventureWorks Sample Database
This section describes how to install AdventureWorks as a sample database on SQL Server. 2022-10-01, ∼7006🔥, 0💬

Java Compilation and Execution Processes
This section provides a quick introduction of Java compilation and execution process. 2020-04-30, ∼6977🔥, 10💬

💬 2020-04-30 Abdul Razzaq from Pakistan: Thanks Yiu

💬 2016-12-04 ak: Thx

💬 2016-09-22 rodriguesss: thanks

💬 2016-03-05 Shohel: THanks lot

💬 2016-01-05 Rishika: THANK U

(More comments ...)

Examples of Unicode Characters
Some samples of Unicode characters are provided here with their glyphs, code points, code names and code blocks for the purpose of demonstration. 2024-01-23, ∼6975🔥, 0💬

"openssl enc" Converting Keys from Binary to PEM
This section provides a tutorial example on how to convert a private and public key pair stored in binary PKCS#8 format into PEM (Privacy Enhanced Mail) format with the 'openssl enc' command. 2018-01-20, ∼6944🔥, 2💬

💬 2018-01-20 Herong: Dan, Thanks for comment. The "-inform" and "-outform" options are definitely better options. This tutorial will be updated.

💬 2018-01-17 Dan Lukes: openssl dsa understands binary key's format as well. Just claim it using option '-inform DER'. Moreover, 'openssl dsa -inform DE...

Downloading and Installing JRockit R28.2.7
This section provides a tutorial example on how to download and install Oracle JRockit 6 R28.2.7 on Windows systems. 2022-12-10, ∼6911🔥, 3💬

💬 2018-10-11 cxtr: tanks good

"adb logcat -v" Command - Log Format Control
This section describes how to use the 'adb logcat -v' command option to control the format of log entries. 'adb logcat -v long' dumps all data elements of each log entry. 2016-08-02, ∼6896🔥, 2💬

💬 2016-08-02 Herong: jayakrishna, I don't think Android is recording log entries in microsecond accuracy.

💬 2016-07-22 jayakrishna: here logcat is having milli sec accuracy, is it possible to get in micro seconds?

Retrieving CLOB Values with getClob() Method
This section describes how to retrieve CLOB values with the ResultSet.getClob() method. 2022-10-01, ∼6887🔥, 0💬

新冠病毒(SARS-CoV-2)结构, 感染过程和疫苗
新型冠状病毒自2019年12月初爆发以来，到2021年1月底为止，已经造成了全人类的一场巨大灾难。在短短一年左右，新型冠状病毒感染了一亿多（102,871,6 14）人，夺走了两百多万（2,225,773）宝贵的生命。为了让读者对新型冠状病毒有更加深刻的了解，我这里编辑了一些有关新型冠状病毒的基础知识，为战胜新型冠状病毒贡献一份力量。什么是“20... 2021-02-15, ∼6887🔥, 1💬

💬 2021-02-15 羽仙: 谢了！

Install OpenLDAP Server on CentOS 8
This section provides a tutorial example on how to build and install OpenLDAP server from source code. But release 2.4.9 seems to have problems on CentOS 8 systems. 2024-02-07, ∼6882🔥, 3💬

💬 2021-08-12 Antonoly: thank you a lot! 2.4.50 is working for me

Lucky Wedding Dates: 2030 - Year of the Dog
Where to find lucky wedding dates for year 2030? Lucky Wedding Dates: 2030 - Year of the Dog ⇒ Lucky Wedding Dates: 2031 - 2040 ⇐ Lucky Wedding Dates: 2029 - Year of the Rooster ⇑ Lucky Wedding Dates: 2021 - 2030 ⇑⇑ Wedding Date - The Most Important Date of Your Life 2021-07-27, ∼6829🔥, 0💬

Commonly Used JDBC Class Methods
This section lists some commonly used JDBC classes and methods. 2022-10-01, ∼6812🔥, 0💬

Choosing a Wedding Date - When You are Feeling Indecisive
For some couples, it's easy  they know just when they want to tie the knot. For others, it's less clear. After all, you have a lot of options. Even more than you might think, since it's really not necessary to get married on a Saturday. Friday and Sunday afternoons are good choices too, an... 2021-09-25, ∼6807🔥, 0💬

DES Decryption Algorithm
This section describes DES decryption algorithm - identical to the encryption algorithm step by step in the same order, only with the subkeys applied in the reverse order. 2020-05-19, ∼6738🔥, 4💬

💬 2020-05-19 Nick: test comment

💬 2019-06-17 bIPFaV0PLbO9qrDgn+p43A==: bIPFaV0PLbO9qrDgn+p43A==

💬 2017-12-16 Herong: deepak, is this a encrypted comment?

💬 2017-12-11 deepak: 9bc94bbaf6d380eb8f8c6548b2cf6343ccef 5978768e3d69b796d6ef0839172b

javax.net.debug - Debugging SSL Socket Communication
This section provides a tutorial example on how to use JVM property, javax.net.debug, to turn on the SSL socket communication debug option. The debug output message can help you to know what exactly happens at the SSL layer. 2017-03-02, ∼6737🔥, 2💬

Lucky Wedding Dates: 2022 - Year of the Tiger
Where to find lucky wedding dates for year 2022? Lucky Wedding Dates: 2022 - Year of the Tiger ⇒ Lucky Wedding Dates: 2023 - Year of the Rabbit ⇐ Lucky Wedding Dates: 2021 - Year of the Ox ⇑ Lucky Wedding Dates: 2021 - 2030 ⇑⇑ Wedding Date - The Most Important Date of Your Life 2021-09-12, ∼6693🔥, 0💬

Tutorial Books on Computer Technologies
Tutorial Books on Computer Technologies Bitcoin Tutorials - Herong's Tutorial Examples This book is a collection of tutorial examples on Bitcoin and blockchain. Topics include Blockchain, Bitcoin, Cryptocurrency, Merkle Tree, Mining, SHA256, Wallet. Computer History - Herong's Notes This book is a c... 2021-02-14, ∼6632🔥, 0💬

The Mathematics of the Chinese Calendar
Why This Page? Chinese New Year is the main holiday of the year for more than one quarter of the world's population; very few people, however, know how to compute its date. For many years I kept asking people about the rules for the Chinese calendar, but I wasn't able to find anybody who could help ... 2025-08-16, ∼6593🔥, 2💬

💬 2025-08-16 gabriela: this is not at all usefull

Qingming Festival - 1st Day of 5th Solar Term
When is the Chinese Qingming Festival? How is it celebrated? What are the traditions? The 1st day of the 5th solar term is the Qingming (Chinese: 清明节, 清明節) for people to go outside and enjoy the greenery of springtime and to tend to the graves of departed ones. Qingming Festival is the 15th day af... 2021-08-13, ∼6587🔥, 0💬

Lock Types and Lock Levels
This section describes 2 types of locks: Read Lock (Shared Lock) and Write Lock (Exclusive Lock), and 3 levels of locks: Table Lock, Row Lock, and Column Lock. 2019-01-02, ∼6585🔥, 2💬

💬 2016-10-31 Shivin: haha very good

Archived: Windows XP Component "Update Root Certificates"
This section describes the process used by Windows XP component, Update Root Certificates, to communicate to Windows Update Website to fetch a trusted root certificate and install in on the local computer automatically. 2020-06-08, ∼6582🔥, 4💬

💬 2020-06-08 Herong: Onur, If the error is cause by IE auto-updating root certificate, you can download and install the missing root certificate manu...

💬 2020-06-01 Onur: Hi there, Since last a few weeks, although I have XP SP3 and the most recent crypt32.dll versioned 5.131.2600.6459, I get numero...

💬 2019-04-13 Herong: Leo, can you run the "certmgr" command on your Windows XP? It provides functions to install root certificates to your computer.

💬 2019-04-08 Leo: I know this article is outdated, but I'm still looking for a way to update the 'Root certificates' in Windows XP SP3, by install...

阿斯利康新冠疫苗
阿斯利康新冠疫苗的结构和工作机制是什么？阿斯利康新冠疫苗是由英国阿斯利康（AstraZeneca）研发的COVID-19疫苗，代号为AZD1222。阿斯利康新冠疫苗是一种复制型病毒载体疫苗，使用基于普通感冒病毒（腺病毒）的弱化版本的复制缺陷型黑猩猩病毒作为载体，内部包含新冠病毒的突刺蛋白的 RNA链条。阿斯利康新冠疫苗的工作机制和其它复制... 2021-07-19, ∼6570🔥, 0💬

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