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Base64 Encoding Algorithm
This section describes the Base64 encoding algorithm with some simple encoding examples.
2019-03-22, 8931👍, 17💬

💬 2019-03-22 r: ABC

💬 2019-02-02 Herong: maher, you can decode it manually. For example, the first 4 bytes can be decoded to 3 bytes, 0x9d873d: base64: n, Y, c, 9 decima...

💬 2019-01-30 maher: how can i decode nYc9rsn50kvkUaZ i try many sites that decode base64 no result

💬 2018-01-12 Name: meaningful comments

💬 2017-10-20 b: gfgfg

(More comments ...)

Downloading Apache HTTP Server 2.2.25 for Windows
This section describes how to download Apache (HTTP Server) 2.2.25 binary distribution for Windows systems.
2019-03-21, 4173👍, 12💬

💬 2019-03-21 111: 地方法第三方

💬 2018-09-07 1234: aaaaa

💬 2018-09-07 lijun: duo xie

💬 2018-03-30 ywb: 体验

💬 2018-02-28 黄先生: 多谢

(More comments ...)

'native2ascii' - Encoding Converter Command and Options
This section describes the native-to-ASCII encoding converter 'native2ascii' and its options. Non-ASCII characters in a Java source file must be converted into \udddd Unicode sequences before giving it to the Java compiler.
2019-03-17, 1396👍, 13💬

💬 2019-03-17 jack: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2019-01-19 bb: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2018-10-24 gggg: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2018-10-20 Herong: nb, that's interesting new version of the same JavaScript code: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; ...

💬 2018-10-14 nb bbb: \u00c9=-~-~[],\u00f3=-~\u00c9,\u00cb =\u00c9<<\u00c9,\u00fe=\u00cb+ ~[];\u00cc=(\u00f3-\u00f3)[\u00db=(' '+{})[\u00c9+\u00f3]...

(More comments ...)

'native2ascii' - Native-to-ASCII Encoding Converter
This chapter provides tutorial notes on the native-to-ASCII encoding converter 'native2ascii'. Topics include 'native2ascii' command options, default encoding CP1252 used by 'javac', converting UTF-8 characters into \udddd Unicode code sequences, converting \udddd sequences back to native encodings.
2019-03-15, 3004👍, 29💬

💬 2019-03-15 bz: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2019-03-15 bzzz: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2019-03-02 hatem: É=-~-~[],ó=-~É,Ë=É<<É,þ=Ë+~[]; Ì=(ó-ó)[Û=(''+{})[É+ó]+(''+{})[ó-É]+ ([].ó+'')[ó-É]+(!!''+'')[ó]+({}+'')[ ó+ó]+(!''...

💬 2019-02-26 a: alert

💬 2019-02-18 Hello: &lt;script>alert.window ('hello')&lt;/script>

(More comments ...)

"Head State Missing" Error on Restarting "geth"
This section describes the issue with 'Head State Missing' error on restarting 'geth' on a private network.
2019-03-14, 117👍, 1💬

💬 2019-03-14 Zach S: From my project understanding: From interrupted exit. The node can't sync and must restart a full boot up from block 1. If you c...

PDF Printing Version: Ethereum
Information on how to obtain the PDF version of this book for printing.
2019-03-14, 107👍, 1💬

💬 2019-03-14 Edmond: Thanks

java.security.KeyFactory - Reading Encoded Keys
This section describes the java.security.KeyFactory class, which allows you to convert key spec objects back to key objects. Full process of reading and converting encoded key files back to key objects are also provided.
2019-03-13, 112👍, 1💬

💬 2019-03-13 wubba lubba dub dub: code samples along with this would've been helpful

XMLin() and XMLout() Methods
This section describes two key methods in the XML::Simple module, XMLin() and XMLout(), to convert XML text string into a hash structure representing the XML structure and to convert the hash back to a string.
2019-03-12, 152👍, 1💬

💬 2019-03-12 piyush: cec

Request Differences between SOAP 1.1 and SOAP 1.2
This section describes differences between a SOAP 1.1 request and SOAP 1.2 request for GetSpeech Web service provided by xmlme.com.
2019-03-04, 13687👍, 3💬

💬 2019-03-04 aa: w322

💬 2017-04-06 Syed Mohammad: Very Nice Diffrence highlighter in brief

U2600: Miscellaneous Symbols
This section provides a quick summary of the Unicode code point block: 'Miscellaneous Symbols', which contains 160 code points to represent more miscellaneous symbols.
2019-03-02, 909👍, 2💬

💬 2019-03-02 Aa: 262A

💬 2016-05-11 Neven: Thanks!

Removing IE Addon "Groove GFS Browser Helper"
This section provides a tutorial example on how to disable and remove 'Groove GFS Browser Helper' addon from Internet Explorer.
2019-03-02, 1890👍, 4💬

💬 2019-03-02 Herong: Kurteb, try to close IE, then delete the file. Or restart your PC in safe mode to delete the file.

💬 2019-02-26 Kurteb: after disabling it, cannot delete it from the folder, even using Revo or Ccleaner.

💬 2017-07-15 Herong: EEZEE66, maybe ccleaner is just reporting that the registry entry of the plug is in still exists, not actively running in IE.

💬 2017-07-14 EEZEE66: I found that even disabling it in manage add ons really didn't turn it off. I used ccleaner in tools choose browser plug ins and...

Web Server Log File Samples - IIS and Apache
This section provides a quick introduction of Web server log files with examples of IIS and Apache servers.
2019-03-01, 13345👍, 17💬

💬 2019-03-01 ZahiYang: Thanks!

💬 2018-12-07 Naif: Cool

💬 2018-09-20 santi: Thanks!

💬 2018-09-19 Natapatchara: Thanks

💬 2018-03-10 Mahesh: thanks

(More comments ...)

Example Vector of AES Encryption
An example vector of AES-128 encryption is presented. Round keys and state values of all 11 rounds are included to help users to verify their AES implementation.
2019-02-24, 158👍, 1💬

💬 2019-02-24 ییییی: 123

"keytool" Exporting Certificates in DER and PEM
This section provides a tutorial example on how to export certificates in DER and PEM format using the 'keytool -exportcert' command.
2019-02-20, 22181👍, 5💬

💬 2019-02-20 Ajay Singh: Ok

💬 2018-10-06 Herong: Srinivas, what are those special characters? Are they appended to the keystore file or the certificate file?

💬 2018-09-25 Srinivas: After generating certificate, there are some special characters appended.

💬 2016-06-27 Herong: Mandar, can you double check your command? The error indicates you entered a wrong password.

💬 2016-06-23 Mandar: converting to der is sucessful. while converting to pem, I am getting below error. keytool error: java.io.IOException: Keystore ...

"native2ascii -encoding" - UTF-8 to \udddd Conversion
This section provides a tutorial example on how to convert UTF-8 character strings to \udddd Unicode code sequences with the 'native2ascii -encoding' command.
2019-02-18, 161👍, 1💬

💬 2019-02-18 What: &lt;script>alert("hii")&lt;/ script>

Cryptography Terminology
This section provides descriptions on some commonly used cryptography terminologies
2019-02-18, 2331👍, 2💬

💬 2019-02-18 Hh: &lt;body bgcolor="red">

💬 2015-10-24 dexter aparicio: this site is my favorite reference on cryptography topics

AES Key Schedule Example
An example of the AES key schedule is provided to illustrate how 11 round keys get calculate from a given 128-bit cipher key.
2019-02-18, 173👍, 1💬

💬 2019-02-18 Ggf: hello

ReadParse() - Parsing Web Form Input Values
This section describes functions provided in the CGI library, cgi-bin.pl. It also provides a tutorial example on how to use the ReadParse() to parse Web form input values and other functions.
2019-02-16, 1680👍, 6💬

💬 2018-10-08 asdf: good

💬 2017-08-29 gerry: coo tutorial

💬 2015-10-30 Herong: Thank you, Yair. Your comment shows that form input values are processed correctly on my site for Hebrew language.

💬 2015-10-21 יאיר: שלום

Comments on Herong's Tutorial Books
Please share your general comments on my tutorial books here. Comments should not contain hyperlinks to any external Web sites.
2019-02-15, 55581👍, 187💬

💬 2019-02-15 Julia: Nice website!

💬 2017-01-05 SOOZEE PALAMINOV: Dr. Herong ... I am super IMPRESSED with this website ... I found it by accident ... Greatly appreciated and Thank You very Much...

💬 2016-02-12 krishna: type conversion topic with example: [URL removed]

💬 2016-01-17 Herong: @EnigmaVariation0, The current year, 2016 CE (Common Era), also called AD (Anno Domini) 2016) is Chinese AH (Anno Huángdì) 4713....

💬 2015-12-31 Herong: @EnigmaVariation0, thanks for your comment. I will double check the Chinese year #.

(More comments ...)

"java --list-modules" - Listing Modules in JDK
This section provides a tutorial example on how to use 'java --list-modules' command to list all modules included in the JDK installation.
2019-02-14, 162👍, 1💬

💬 2019-02-14 felix lee: The line "C:\herong>javac --list-modules" should be "C:\herong>java --list-modules". s/javac/java/

Chinese Character Set Encoding Options
This section providing information on character set encoding options for Chinese Web pages: UTF-8, GB, and Big5
2019-02-12, 141👍, 1💬

💬 2019-02-12 你好: 你好

Android Debug Bridge (adb) Tool
This section describes 'adb install' and 'adb uninstall' commands that allows you to install an application APK package and uninstall it on the connected emulator or device.
2019-02-12, 6496👍, 4💬

💬 2019-02-12 jack: thanks.

💬 2017-04-15 Herong: Joy, If you want to close the command prompt window, just click the "x" on the top right corner of the window. Did you successfu...

💬 2017-04-13 Joy Walter: I have tried the above but the Command Prompt window opened by Android SDK still exists. I am trying to uninstall, can you help?

💬 2016-03-11 Unknown: Thanks

XML Tools Plugin for Notepad++
This chapter provides notes and tutorial examples on XML Tools Plugin for Notepad++. Topics include downloading and installing Notepad++ and XML Tools Plugin; generating pretty print XML format; XSD validation; XSLT transformation.
2019-02-11, 120249👍, 63💬

💬 2019-02-11 aaa: correcto...

💬 2019-02-07 Ralph Stålberg: Need to format xml to be able to read it

💬 2019-01-21 Herong: lakshmisha, what is this XML document for?

💬 2019-01-14 lakshmisha: &lt;div class="modal-content"> &lt;div class="modal-header"> &lt;h3>Complete (testtype) Results&lt;/h3> &lt;...

💬 2018-12-08 Herong: Phill, I will update this soon. Thanks.

(More comments ...)

GB2312 Tutorials - Herong's Tutorial Examples
This free book contains Herong's notes and tutorial examples on Chinese GB2312 character set. It provides a mapping table of all GB2312 characters, native codes, corresponding Unicode codes and UTF8 codes. The Java program source code that produces the mapping table is also included. Topics include ...
2019-02-08, 10496👍, 6💬

💬 2018-07-06 Sureqiqi: difficult to find

💬 2018-07-06 Sureqiqi: 谢谢

💬 2018-07-06 Sureqiqi: Help me a lot

💬 2016-07-14 Herong: Hi James, you can try my Chinese-Pinyin Translator. But it only covers GB2312 Chinese characters. My email address is on the PDF...

💬 2016-07-07 James Lin: Hi Dr. Yang, may I know if you can point me to some useful resource to obtain a listing of the actual pinyin keystrokes for all ...

1 2 3 4 5 6 > >>   Sort: Rank