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JSP Java Tag Interface
This chapter provides tutorial notes and example codes on JSP Java tag interface. Topics include the javax.servlet.jsp.tagext package; JspTag, SimpleTag and IterationTag interfaces; SimpleSupport and TagSupport classes; implementing IterationTag interface.
2016-11-10, 113👍, 1💬

"INSERT INTO" Statements
This section describes how to insert data rows with INSERT INTO statements.
2016-11-08, 138👍, 1💬

Nested Tags Example - Break Tag for Loops
This section provides a tutorial example on how to create 2 tag classes to a support nested custom tags in JSP pages. As an example, a Loop tag and a Break tag is created to work together.
2016-11-08, 122👍, 1💬

SQLCMD SQL Server Command Line Tool
This section describes how to SQL Server command line tool - SQLCMD.
2016-11-08, 516👍, 1💬

💬 2016-11-08 Vineesh: SELECT DB_NAME(); GO

SHA1 Mesasge Digest Algorithm
This chapter provides tutorial notes and example codes on the SHA1 message digest algorithm. Topics include SHA1 algorithm overview; using SHA1 in Java, PHP, and Perl.
2016-11-05, 1287👍, 5💬

💬 2015-10-14 Herong: Yojana, information on key generation of Blowfish Algorithm can be found in Key Schedule (Sub-Keys Generation) Algorithm tutoria...

💬 2015-10-13 Yojana Yadav: Plz send me the detail of key generation of Blowfish Algorithm

💬 2013-06-28 Herong: Abbas, You are welcome!

💬 2013-06-26 abbas: thank you for sha-1 and it's so helpful

Encryption using RSA Public Key with SoapUI
This section provides a tutorial example on how to encryption the SOAP body element content with a RSA public key certificate using SoapUI.
2016-11-04, 1119👍, 3💬

💬 2016-11-04 kalasba: hi, please can you share online training & video ?

💬 2016-07-14 Herong: Hi Sejai, please share SoapUI tutorials here, not ads.Thanks.

💬 2016-07-09 sejal: hi,we provide online training & video tutorial for soapui for free videos refer [URL removed]

Main Features of JSP 2.1
This section describes main features of JSP 2.1 including scripting elements, built-in objects, directives, JavaBean objects, JSTL, EL and standard actions.
2016-11-02, 593👍, 2💬

💬 2016-04-17 arun: i'm arun

insertRow() - Inserting New Rows through ResultSet Objects
This section describes how to insert rows into target tables through ResultSet objects.
2016-11-01, 211👍, 1💬

First 8336 Hex Digits of PI
This section provides first 8336 hex digits of constant PI, 3.1415927..., needed for Blowfish encryption algorithm.
2016-10-31, 4227👍, 8💬

💬 2016-10-31 Andres: cool

💬 2016-04-07 Tamas Losonczi: This is great

💬 2016-03-15 Bogdan: Thanks!

💬 2015-12-03 Herong: Sadi, we only need (18*32+4*256*32)/4=8336 hex digits for the Blowfish encryption algorithm. I have typos in my tutorials. I wil...

💬 2015-12-02 Sadi: Sorry, I meant "8336 and not 8366"... Also would you like to compare these with "http://hexpi.sourceforge.net/" as there are som...

(More comments ...)

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.
2016-10-31, 783👍, 1💬

💬 2016-10-31 Shivin: haha very good

Activity Diagram - Accept Event Notation
This section describes the Accept Event Notation used in a UML Activity Diagram. An Accept Event Notation represents an action that waits for an event to arrive from outside and processes it.
2016-10-26, 422👍, 1💬

💬 2016-10-26 at_svg: useful

Removing IE Addon "PDF Link Helper"
This section provides a tutorial example on how to disable and remove 'PDF Link Helper' addon from Internet Explorer.
2016-10-25, 867👍, 2💬

💬 2016-10-25 Herong: Paul, can you share your solution?

💬 2016-10-24 Paul-H: This is stupid solution.

U2A00: Supplemental Mathematical Operators
This section provides a quick summary of the Unicode code point block: 'Supplemental Mathematical Operators', which contains 256 code points to represent additional mathematical operators
2016-10-24, 223👍, 1💬

💬 2016-10-24 ramulu: it is useful

Installing .NET Framework 4.6.1 SDK
A tutorial example is provided on how to download and install Microsoft .NET Framework 4.6.1 SDK, which can be used as the programming environment for C# language.
2016-10-23, 172👍, 1💬

Downloading and Running Flash Player Projector
This section describes a tutorial example on how to download and run Adobe Flash Player Projector to play Flash applications stored in SWF files without using Web browsers.
2016-10-21, 173👍, 1💬

"keytool" Importing CA's Own Certificate
This section provides a tutorial example on how to import CA's certificate generated by 'OpenSSL' into a 'keystore' file using 'keytool'
2016-10-20, 427👍, 2💬

💬 2016-10-20 Herong: Akhtar, AES256 encryption does not require any certificates. It requires a secret AES key, see Introduction to AES (Advanced Enc...

💬 2016-10-19 Akhtar: I have also a certificate file (.cer) .I did the same procedure to import in to mykey store and got .jks file but, now i want to...

Outdated Tutorials
This section describes 'adb push' and 'adb pull' commands, which allows you to copy files to and from the remote Android emulator or device.
2016-10-20, 183👍, 2💬

💬 2016-10-20 Herong: Peter, this tutorial is outdated, because it was based on the outdated SDK version: Android SDK R17. "push" and "pull" commands ...

💬 2016-10-19 peter chatterton: What do you mean by 'outdated'? Are push and pull impossible not or just unsupported? Great site BTW!! Because of the Dummies bo...

Windows 7: Disable Scheduled Tasks
This section provides a tutorial example on how to review tasks that have been scheduled to run on a Windows 7 system in the background and disable any unwanted tasks.
2016-10-20, 1308👍, 4💬

💬 2016-10-20 Herong: Branksome, your right panel is probably turned off. You can turn it on by clicking the last icon below the menu. You can also ac...

💬 2016-10-18 Branksome: On my Win7 system, there is no right panel with an option to delete. What I would prefer to do is reduce the schedule to run les...

💬 2016-03-30 Herong: David, There is a button on "Task Scheduler" to disable all of them. You should not allow any program to be scheduled on your ho...

💬 2016-03-23 David Betts: Hi, I was looking for a solution that disabled all tasks. However I can now find my way around the entries . I think I will leav...

Scalar Values and List Values
This section describes what is a scalar value, a single numeric value or a string of characters, and what is a list value, a list of scalar values.
2016-10-19, 115👍, 1💬

Opening UTF-8 Text Files
This section provides a tutorial example on how to open a UTF-8 text file with Nodepad correctly by selecting the UTF-8 encoding option on the open file dialog box.
2016-10-19, 146👍, 1💬

GB18030 Character Set and Encoding
This chapter provides notes and tutorial examples on GB18030 character set and encoding. Topics including history of GB character sets: GB2312, GB1300.1 (GBK) and GB18030; GB18030 encoding schema.
2016-10-17, 385👍, 1💬

💬 2016-10-17 asd: test

"sc.exe query type= driver" - All Device Driver Services
This section provides a tutorial example on how to list all device driver services with 'sc.exe' Service Controller command tool.
2016-10-15, 552👍, 2💬

💬 2016-10-15 Herong: Jay, I don't know the answer. Hope other visitors can help to explain.

💬 2016-10-14 Jay: How do you interpret this? CHECKPOINT : 0x0

Installing Microsoft JDBC Driver for SQL Server
This section describes how to download and install Microsoft JDBC Driver 4.2 for SQL Server 2014.
2016-10-15, 9342👍, 4💬

💬 2016-10-13 Herong: Matthew, see the Loading Driver Class Automatically tutorial my response to your other question.

💬 2016-10-12 Matthew: well that was rude.. you could have just said you didnt have the time to help me... what goes around come around

💬 2016-10-04 Eric: very happy

💬 2016-04-23 bhanu: thanks

Loading Driver Class Automatically
This section provides a tutorial program to show how JDK 1.7 and 1.8 automatically loads JDBC driver classes from JAR files specified in the classpath.
2016-10-15, 546👍, 3💬

💬 2016-10-13 Herong: Matthew, can you try to run the above test program with "javac" and "java" commands in a command window first? Using Eclipse, yo...

💬 2016-10-12 Matthew: my apologies i thought you deleted my comments without responding to them. its hard to find where i put my question

💬 2016-10-12 Matthew: Sorry to be so burdensome, i am running the specified code however i am getting no drivers listed. i moved the sqljdbc42 to the ...

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