Android ASP Astrology Bitcoin Blowfish Built-in C# Calendar CD-DVD Chinese Cryptography DES Encoding Ethereum Flash GB2312 General H Herong History HTML Java JavaScript JDBC JSP JVM Linux Molecule Movie Music MySQL Perl PHP Physics PKI Publication Python Reference REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO

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serialver - serialVersionUID Generator
This chapter provides provides a tutorial example on how to use 'serialver' command to generate a unique 'serialVersionUID' value for any given serializable Java class. 2023-02-22, 1044👍, 3💬

MockService - Web Service Simulator
This section provides a tutorial example on how to create a Web service simulator, MockService, with SoapUI, to return a mock response. 2023-02-22, 322👍, 1💬

NumberToWords - Convert Number in Digits to Words
This chapter provides a quick introduction of the free Web service, NumberToWords, converting a number in digits to words. Topics include usage description of NumberToWords; request message sample; response message sample. 2023-02-22, 1564👍, 5💬

Converting Secret Keys to and from Byte Arrays
This section provides a quick introduction of the SecretKeySpec class and the KeySpec interface. They can be used to convert secret keys into byte arrays to store them in external files. 2023-02-22, 17929👍, 6💬

RsaKeyValidator.java for RSA Key Validation
This section provides a tutorial example on how to validate RSA keys by encrypting and decrypting some random sample messages. 2023-02-19, 378👍, 2💬

OpenSSL "enc -bf-ofb" for Blowfish/OFB Encryption
Tutorial notes and example codes are provided OpenSSL 'enc -bf-ofb' command for Blowfish encryption in OFB mode. Topics include introduction of OFB (Output FeedBack) cipher operation mode; Literal Key options to specify secret key and IV directly; Salted Key and Random Salt options to specify secret... 2023-02-15, 344👍, 2💬

__pycache__/module.version.pyc Files
This section provides a quick introduction to the __pycache__/module.version.pyc file. which is a binary file created by the Python system to store the compiled version of the given module file. 2023-02-15, 139👍, 1💬

What Is DER (Distinguished Encoding Rules) Encoding?
This section describes the DER (Distinguished Encoding Rules) - A binary format of encoding a data value of any data types including nested data structures. 2023-02-13, 24435👍, 11💬

Building a New DOM Document Object
This section provides a tutorial example on how to build a new DOM Document object and print it out as DOM Node tree. 2023-02-13, 155👍, 1💬

Permission Error on php-cgi.exe
This section describes the error of 'You don't have permission to access /cgi-bin-php/php-cgi.exe/hello .phpon this server.' It is caused by the syntax change in the PHP directory access permission configuration settings. 2023-02-11, 241👍, 1💬

Uninstall Bitcoin Core for Windows
This section describes how to uninstall Bitcoin Core for Windows. 2023-02-10, 1647👍, 63💬

HTTP Request and Response Raw Data
This section provides a tutorial example on how to view HTTP request and response raw data which includes HTTP header lines. 2023-02-07, 3454👍, 4💬

Archived: Downloading and Installing JDK 1.3.1 on Windows
This section provides a tutorial example on how to download and install JDK (or J2SE) 1.3.1 on a Windows 2000 system. A simple Java program was entered, compiled, and executed with the new JDK installation. 2023-02-07, 4424👍, 5💬

Registry Hives - HKCR, HKCU, HKLM, HKU, HKCC, and HKPD
This section provides quick introductions on the Windows registry hives - top level registry keys on Windows XP systems. 2023-02-04, 26135👍, 5💬

Free Chinese Calendar 2024 - Year of the Dragon
Want to know when is the 2024 Chinese New Year day? Look for free Chinese calendars for 2024? Chinese New Year Date for Year 2024 The Dragon 2024 February 10 Saturday Chinese New Year   ⇒ Free Chinese Calendar 2025 - Year of the Snake ⇐ Free Chinese Calendar 2023 - Year of the Rabbit ⇑ Chinese New ... 2023-02-03, 29297👍, 1💬

JPEG Image File Format Quality and Size
This chapter provides tutorial notes and example codes on JPG (JPEG) image file format. Topics include saving images in JPEG format; comparing file sizes of JPEG and BMP formats; comparing image quality and file size of JPEG compression quality levels: 95%, 90%, 85%, 75%, 50%, and 25%. 2023-02-02, 328👍, 4💬

My First Servlet Page on macOS
This section provides a tutorial example on how to create the first Servlet Java class to test the Servlet support of the Tomcat Web server on macOS systems. 2023-02-02, 393👍, 2💬

"WScript" Runtime Object Hierarchy
This section describes WSH runtime objects: WScript and its properties. A tutorial example is provided on how to use WScript.StdIn and WScript.StdOut. 2023-02-02, 154👍, 1💬

French Characters in HTML Documents - UTF-8 Encoding
This section provides a tutorial example on how enter and use French 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. 2023-02-01, 1467👍, 2💬

UTF-8 Encoding Algorithm
This section provides a tutorial example on how to write a programming algorithm to encode characters with UTF-8 encoding. 2023-02-01, 7586👍, 6💬

Installing NMake 1.5
This section provides a tutorial example on how to install the 'make' utility on Windows, NMake 1.5, to help installing the RPC::XML Perl module. 2023-01-31, 21534👍, 20💬

What Is PKCS5Padding?
This section describes what is PKCS5Padding - a schema to pad cleartext to be multiples of 8-byte blocks. 2023-01-31, 44605👍, 32💬

Create Copay Wallet Backup
This section describes how to create Copay wallet backup. 2023-01-31, 158👍, 1💬

"Err.Raise()" - Raising Your Own Errors
This section provides a tutorial example on how to raise your own runtime errors with the Err.Raise(number, source, description) method. The error number should be in the range of 0 and 65535. 2023-01-28, 15467👍, 4💬

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Android ASP Astrology Bitcoin Blowfish Built-in C# Calendar CD-DVD Chinese Cryptography DES Encoding Ethereum Flash GB2312 General H Herong History HTML Java JavaScript JDBC JSP JVM Linux Molecule Movie Music MySQL Perl PHP Physics PKI Publication Python Reference REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO