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... 2021-03-07, 8821👍, 2💬
Certificate in PEM Format
This section describes what is certificate PEM (Privacy Enhanced Mail) format - A format uses PEM idea to convert a certificate in DER format to a message of printable characters. The conversion uses the Base64 encoding. 2020-02-23, 6763👍, 4💬
全世界有哪些新冠疫苗？ 到2021年1月为止，全世界有5款新冠疫苗获得不同国家批准上 市。下面是全世界新冠疫苗一览表： 代号 种类 公司 阶段 获批国家 Ad26.COV2.5 载体 强生(杨森)-美国 III期 欧盟，美国 Ad5-nCoV 载体 康希诺-中国 III期 中国，巴基斯坦，墨西哥 AZD1222 载体 阿斯利康-英国 III期 印度，阿根廷，墨西哥，英国，欧盟，… BBIBP-CorV 灭活 中国生物-中国... 2021-05-04, 6558👍, 0💬
Illustration of DSA Algorithm: p,q=7,3
This section provides a tutorial example to illustrate how DSA digital signature algorithm works with small prime modulus p=7 and prime divisor q=3. 2018-04-24, 6508👍, 5💬
Drawing Graphics - Using paint() on Frame
This section provides a tutorial example on how to override the paint() method in the javax.swing.JFrame class to draw graphics (a rectangle) on the frame window. This solution is not recommended. 2021-02-23, 6464👍, 4💬
Downloading and Installing JDK 1.7.0 on Windows
This section provides a tutorial example on how to download and install JDK 1.7.0 (Java SE 7) on a Windows XP system. A simple Java program was entered, compiled, and executed with the new JDK installation. 2020-04-28, 6458👍, 6💬
Table of Contents
This free VBScript tutorial book is a collection of notes and sample codes written by the author while he was learning VBScript himself, an ideal tutorial guide for beginners. Topics include Variant, Array, Function, Error Handling, Regular Expression, Dictionary, File System, Class, Object, IE Brow... 2020-04-25, 6447👍, 2💬
HttpsClient.java - HTTPS Client Test Program
This section provides a tutorial example on how to write a HTTPS client test program, HttpsClient.java. It sends a simple HTTP request page using the HTTPS protocol. 2015-11-20, 6357👍, 6💬
Declaring Root Elements - "element" Element
This section describes a tutorial example on how to use the Element Declaration Component to declare the root element for a conforming XML document. 2018-08-29, 6325👍, 6💬
Perl Tutorials - Herong's Tutorial Examples
This Perl tutorial book is a collection of notes and sample codes written by the author while he was learning Perl language himself. Topics include ActivePerl, data types, subroutines, debug, references, objects, open, binary, file, directory, DBM, MySQL, regular expression, RPC::XML, XML::Simple, S... 2020-11-12, 6222👍, 6💬
Generating Client Side Stub Java Code
This section provides a tutorial example on how to run WSDL2Java to generate client side stub Java code from an existing WSDL document. The generated stub class will have a package name borrowed from the target namespace of the Web service. 2015-11-25, 6197👍, 1💬
"keytool" Commands and "keystore" Files
This chapter provides tutorial notes and example codes on the 'keytool' command. Topics include introduction of public key certificates, 'keystore' file, 'keytool' command; generating new keys and self-signed certificates; exporting and importing certificates; cloning certificates to share keys. 2015-11-23, 6119👍, 3💬
XSL-FO Tutorials - Herong's Tutorial Examples
This free book is a collection of tutorial notes and sample codes written by the author while he was learning XSL-FO (Extensible Stylesheet Language - Formatting Objects) himself. Topics include XSL, FO, XML, PDF, Formatting, Pagination, Layout, Styling, Header, Footer, Graphics, PDF, Graphics, Font... 2016-06-19, 6110👍, 1💬
What Is SHA1 Message Digest Algorithm?
This section describes what is SHA1 (Secure Hash Algorithm 1) - a message digest algorithm which takes as input a message of arbitrary length and produces as output a 160-bit 'fingerprint'. 2017-12-09, 6083👍, 6💬
META-INF Files - Digests, Signature and Certificate
This section describes META-INF files in an .apk package file: MANIFEST.MF - manifest file, CERT.SF - signature file and CERT.RSA - the real signature file with certificate. 2015-09-04, 5949👍, 2💬
UserInit - Winlogon Registry Key
This section provides a tutorial example on how to undo changes done by the PWS Trojan on the UserInit registry value under the HKLM\Software\Microsoft\Window sNT\CurrentVersion\Winlogon registry key. 2016-02-25, 5824👍, 2💬
Want to know when is the 2016 Chinese New Year day? Look for free Chinese calendars for 2016? Chines...
This XML tutorial book is a collection of notes and sample codes written by the author while he was ...
This section describes how to download and install Microsoft JDBC Driver 4.2 for SQL Server 2014.
This section describes the MD5 algorithm - a 5-step process of padding of '1000...', appending messa...
This section provides a tutorial Java program, CipherDES.java - A Java Implementation of DES encrypt...