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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setMnemonic() - Setting Keyboard Mnemonics on Menu Items
This section provides a tutorial example on how to use setMnemonic() method to associate mnemonics to menu items. Mnemonics allows user to interact with menu items using keys on keyboard. 2023-04-27, ∼6417🔥, 5💬

💬 2023-04-27 a: thanks

💬 2021-02-05 Hailemelekot: good.

💬 2020-11-20 rose: nic

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, ∼6417🔥, 0💬

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, ∼6397🔥, 0💬

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, ∼6382🔥, 0💬

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, ∼6344🔥, 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.

Using openConnection() Method in java.net.URL Class
This section provides a tutorial example on how to use the openConnection() method in the java.net.URL class to perform a GET method on an HTTPS server. Java Secure Socket Extension (JSSE) works quietly behind the java.net.URL class to provide HTTPS support. 2022-07-08, ∼6343🔥, 3💬

💬 2015-08-05 ashkart: doesnt work indeed. Connection type got, connection object got too. But then there is an exception "java.net.ConnectException: C...

💬 2015-08-05 ashkart: sorry, works fine, i forgot i'm behind the proxy...

AES MixColumns() Procedure Algorithm
A detailed description of the MixColumns() procedure algorithm is provided. The MixColumns() procedure performs a matrix multiplication of a given 'state' with a static matrix. The MixColumns() procedure is used in the AES encryption process. 2023-06-10, ∼6340🔥, 3💬

💬 2021-12-24 Muhammad Ghulam Ghouse: Appreciated

💬 2021-11-15 123: AD E0 B8 1E BF B4 41 27 5D 52 11 98 30 AE F1 E5

Chinese Horoscopes - The Rabbit Personality
People born in the year of the rabbit are the luckiest among "the twelve animals." The rabbit is a symbol for mercy, elegance, amiability and worship of beauty. People born in this year are kind, speak gently, peaceful, quiet and loving persons. They like to live easy lives. They are reserved person... 2021-08-13, ∼6329🔥, 0💬

Retrieving BLOB Values with getBlob() Method
This section describes how to retrieve BLOB values with the ResultSet.getBlob() method. 2022-10-18, ∼6323🔥, 0💬

Ethereum Tutorials - Herong's Tutorial Examples
This book is a collection of tutorial examples on Ethereum and blockchain. Topics include include: What is Ethereum; What is blockchain; Ethereum market value; What is Go Ethereum (Geth); Running a private Ethereum network with Geth; What is Ethereum Mist wallet; What is MetaMask wallet; Ethereum mi... 2023-12-06, ∼6304🔥, 5💬

💬 2022-07-10 Lori: Thanks for such a good book. It helps me a lot!

💬 2022-06-22 vinay: very good and clear

💬 2018-05-11 meizumx4pkwn: tanxs so much Doc..request to share this to myFam n Frenz..

💬 2018-03-11 Ed: Thanks!

EC Cryptography Tutorials - Herong's Tutorial Examples
This EC (Elliptic Curve) cryptography tutorial book is a collection of notes and sample codes written by the author while he was learning cryptography technologies himself. Topics include rule of chord and point addition on elliptic curves; Abelian groups with additive/multiplicative notations; EC a... 2024-11-16, ∼6297🔥, 4💬

💬 2022-07-27 Aman: Perfect book to help my 'encoding' project. Thank you!

💬 2020-06-23 Herong: Chris, contact me by email. I will send you a PDF copy. Thanks for your comment.

💬 2020-06-22 chris: Sorry for fuss. Bought this ebook on google. bad idea. Should have not done that and just got the physical book or maybe ebook o...

💬 2019-01-01 Yale: Thank you!

Installing LG USB Device Driver on Windows
This section provides a tutorial example on how to install the LG USB device driver for LG-P925g Android phone on Windows system. This is needed to test your Android application developed on Windows on LG phones via a USB connection. 2016-03-24, ∼6275🔥, 7💬

💬 2016-03-24 vamshi: hi hi hi

💬 2015-08-27 Herong: Renee, did you double-click on the downloaded file to actually install the driver to your computer?

💬 2015-08-26 Renee' Flory: Even after I download the program, the Driver Software Installation box does not come up. Even as the phone receives a charge fr...

"Hello" Web Service
"Hello" is an XML document based Web service for testing purpose only. High level information about this "Hello" Web service: WSDL Document: Hello_WSDL_11_SOAP.wsdl . WSDL Version: 1.1 WSDL Binding Extension: SOAP 1.1 Transportation: SOAP 1.1 over HTTP Operation Name: Hello Operation Style: default ... 2024-02-06, ∼6234🔥, 2💬

New Year's Eve - Last Day of Lunar Year
When is the Chinese New Year's Eve? How is it celebrated? What are the traditions? The last day of the lunar year is the Chinese New Year's Eve (Chinese: 除夕, 年三十) to worship ancestors and have family reunion dinner. The Chinese New Year's Eve falls on the following dates in the Gregorian calendar:... 2023-08-13, ∼6229🔥, 1💬

Chinese Characters in HTML Documents - UTF-8 Encoding
This section provides a tutorial example on how enter and use Chinese characters in HTML documents using Unicode UTF-8 encoding. The HTML document should include a meta tag with charset=utf-8 and be stored in UTF-8 format. 2024-01-18, ∼6210🔥, 5💬

💬 2024-01-18 JACKY: 您好

💬 2023-05-08 你好你好: 你好

💬 2023-03-20 Paolo: L'elefante correva nel prato

💬 2021-09-16 r: 你好

💬 2016-01-06 thomas: help needed.

Using Visual Basic with Microsoft Access
This section provides tutorial example on how to add a Visual Basic code in Microsoft Access database to be executed as a macro on database tables. 2023-12-16, ∼6183🔥, 11💬

💬 2023-12-16 v: Thank you!

💬 2022-02-27 bob: this didnt help

💬 2021-10-27 fahis: lets go

💬 2018-08-11 Herong: trina, I will make corrections. Thanks for the comment.

💬 2018-08-11 trina: Why spreading misinformation? Pages like this are confusing for new users, with half-facts and limited instruction. First: Acces...

(More comments ...)

Printing Histogram of Java Object Heap
This section provides a tutorial example on how to print the histogram of Java object heap, a list of different types of objects and their counts and total sizes. 2016-12-14, ∼6181🔥, 2💬

💬 2016-12-14 Herong: Erik, you can look at the Java Management Extensions (JMX) API.

💬 2016-12-11 Erik Ostermueller: is there a java api to access this histogram? Thanks, --Erik

DsaSignatureGenerator.java - Generating DSA Digital Signature
This section provides tutorial example on how to generate a digital signature for a message file with a DSA private key using the SHA1withDSA algorithm. 2017-03-13, ∼6180🔥, 5💬

💬 2017-03-13 dingdong: heheheheehhe

💬 2016-10-15 Herong: Akash, can you check to ensure your key is a DSA key?

💬 2016-10-14 Akash: Exception occurs as follows: java.security.spec.InvalidKeySpecExc eption:Inappropriate key specification what it means? can you ...

"soap:body" - Binding for SOAP Body
This section describes 'soap:body', a SOAP extension element that specifies how the SOAP Body should be constructed in the SOAP message for an operation input and output. 'literal' means no encoding. 2019-12-23, ∼6176🔥, 2💬

💬 2017-08-16 willy poki: hola

Using Certificates in Firefox
This chapter provides tutorial notes and example codes on using certificates in Firefox. Topics include why Web browsers need certificates; viewing the certificate from an https Web server; exporting a certificate from Firefox to a certificate file; importing a CA certificate into Firefox. 2017-08-31, ∼6135🔥, 1💬

💬 2017-08-31 bobby: ok will do

Derby (Java DB) - Inserting Data Rows to Existing Tables
This section describes how to insert new data rows into Derby (Java DB) database tables through the JDBC driver. 2017-08-05, ∼6110🔥, 2💬

💬 2017-08-05 Herong: Stevoski, can you dump the Exception in the message dialog? It will give some clue on what happened to the execution.

💬 2017-08-03 Stevoski: is there any problem with these lines of code? all i get is invalid entry try{ String mk =jTextField1.getText(); String mn = jTe...

Java GC Tutorials - Herong's Tutorial Examples
This book is a collection of tutorial notes and sample codes written by the author while he was learning JVM GC (Garbage Collection) processes. Topics include Java Garbage Collectors, STW (Stop-The-World), Serial Collector, Parallel Collector, Concurrent Collector, G1 Collector, GC Algorithms, Gener... 2019-01-01, ∼6091🔥, 1💬

💬 2018-06-17 Jack: It's helpful!

Bitcoin Tutorials - Herong's Tutorial Notes
This book is a collection of tutorial examples on Bitcoin and blockchain. Topics include Blockchain, Bitcoin, Cryptocurrency, Merkle Tree, Mining, SHA256, Wallet. Key sections include: What is Bitcoin, What is blockchain, Bitcoin market value, Browsing Bitcoin data blocks on blockchain.com, Browsing... 2022-09-14, ∼6084🔥, 9💬

💬 2021-06-21 Ashish: thank

💬 2018-03-07 Neil Shrestha-Birtch: Awesome stuff again! I want to build my skills to be a Core dev one day!

💬 2018-02-16 Cindy: Very good for beginners!

Chinese astrology - Wikipedia
Chinese astrology (占星術 pinyin: zhàn xīng shù; 星學 pinyin: xīngxúe ; 七政四餘 pinyin: qī zhèng sì yú; and 果老星宗 pinyin: gǔo lǎo xīng zōng) is related to the Chinese calendar, particularly its 12-year cycle of animals (aka Chinese Zodiac), and the fortune-telling aspects according to movement o... 2021-11-18, ∼6073🔥, 0💬

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