Herong's Tutorial Examples

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 and multiplicative notations; ... 2019-07-06, 904👍, 3💬

💬 2019-07-02 Eleftheria Drosopoulou: Hello Herong, Nice blog! I am editor at Java Code Geeks (www.javacodegeeks.com). We have the JCG program (see www.javacodegeeks....

💬 2019-01-01 Yale: Thank you!

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JDBC-ODBC - Creating DSN for MS Access
This section describes how to create a DSN that connected to a MS Access database file. 2015-09-20, 3511👍, 3💬

💬 2007-10-18 Herong: Evan, thanks for pointing out the typo on DSN. They are corrected now.

💬 2007-10-16 Evan: JDBC-ODBC - Creating DNS for MS Access should read "DSN" not "DNS"

Introduction of VBScript - Visual Basic Scripting Edition
This chapter provides a quick introduction on VBScript language. Topics include what is VBScript; what are VBScript host environments; running VBScript codes within Internet Explorer (IE), Internet Information Services (IIS), and Windows Script Host (WSH). 2015-09-20, 149👍, 1💬

Comment Testing Area
What is test testing area for? The testing area is provided to allow visitors to post testing comments. 2015-09-19, 11979👍, 97💬

💬 2019-11-30 ee: wcfvqefv

💬 2019-11-25 Dennis: deeeeeeeeee

💬 2019-11-25 Dennis: 11111111111

💬 2019-11-21 vu: 021258

💬 2019-11-18 f: 20100

(More comments ...)

JDBC Driver Types
This section provides some quick information about different types of JDBC drivers. 2015-09-16, 1095👍, 1💬

💬 2015-09-16 saddaqat: saddaqatali99@yahoo.com

ConvertTemp - Request Message Sample
This section provides a request message sample of ConvertTemp Web service. 2015-09-15, 147👍, 1💬

Unicode Tutorials - Herong's Tutorial Examples
This free Unicode tutorial book is a collection of notes and sample codes written by the author while he was learning Unicode himself, an ideal tutorial guide for beginners. Topics include ASCII, BMP, character set, encoding, decoding, GB, GB18030, GB2312, GBK, ISO-8859, Java, JDK, JIS, Surrogate, U... 2015-09-14, 303👍, 1💬

Feedback on the Comment Module
The comment module on this Web site was extended from the original guestbook tool. If you have any feedback, please share it here. 2015-09-14, 5001👍, 26💬

💬 2015-09-14 Herong: The original guestbook has been retired as of Sep. 12, 2015.

💬 2012-04-17 M REAVES: NICE GUESTBOOK.

💬 2009-03-19 Bharat: Hi it really good guestbook i have seen. good job.

💬 2008-10-25 Biphendpoenda: Another test

💬 2008-07-02 Brin: Hello, nice site :)

(More comments ...)

Blowfish Decryption Algorithm
This section describes the Blowfish decryption algorithm, which is identical to the encryption algorithm step by step in the same order, only with the sub-keys applied in the reverse order. 2015-09-12, 219👍, 1💬

Oracle Database 11g Express Edition (XE) Installation
This section describes how to download, install, and start Oracle Database 11g Express Edition (XE). 2015-09-11, 3458👍, 4💬

💬 2015-09-11 Herong: Peter, what type of assignment requires you to install Oracle database server?

💬 2015-09-11 Peter M Chauke: Please allow me to write assignment no 2 for second Semester at Unisa becauese the disk I am having does not want to install

💬 2015-09-11 Peter M Chauke: Want to do assigment for Inntroduction to Databases in Oracle XE.Univ.exe

Oracle Express Edition Installation on Windows
This chapter provides tutorial notes on Oracle Express Edition installation on Windows systems. Topics include downloading, installing and starting Oracle Database 10g Express Edition; access Oracle server through its Web interface; creating Oracle login user. 2015-09-11, 161👍, 1💬

💬 2019-10-03 Zorba: Love it a lot

"bad decrypt:./crypto/evp/evp_enc.c:461" Error
This section provides a tutorial example on why OpenSSL 'pkcs12' failed with 'bad decrypt:./crypto/evp/evp_enc.c :461'error. The root cause is the key password different than file password. 2015-09-10, 6138👍, 1💬

💬 2015-09-10 Action Here: this totally helped me.

JDBC-ODBC - Connecting to Flat Text Files
This section describes how to connect to a DSN that represents data stored in flat text files in a directory. 2015-09-10, 1241👍, 2💬

💬 2015-09-10 Herong: Raul, do you need some help?

💬 2015-09-09 Raul Perez: No me sirvio de nada

JVM and OS System Properties
This section provides a tutorial example on how to list all properties from the JVM and the OS that are accessible by your Java application. 2015-09-10, 2939👍, 3💬

💬 2015-09-10 Herong: Roland, Good to know that Java 1.8 is reporting your "user.home" directory correctly now :-)

💬 2015-09-09 Roland: I mean System.getProperty("user.home") has changed

💬 2015-09-09 Roland: On my system, I've changed my home dir to D:user\username. With java System.getProperty("user.dir"), I got always D:user\usernam...

Samsung USB Driver for Mobile Phones
This section provides a tutorial example on how to download and install Samsung USB Driver for Mobile Phones, which is needed to run Samsung Galaxy Tab 3 mini tablet in debug mode. 2015-09-09, 1183👍, 1💬

💬 2015-09-09 Power-Man: Hello, thanks Doc Yang

binmode() - Opening Files for Binary Output
This section describes steps on how to open file for binary output using open(), binmode() and print() functions. 2015-09-09, 150👍, 1💬

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, 5526👍, 2💬

💬 2015-09-04 Herong: KariK, thanks for sharing your comments.

💬 2015-08-28 KariK: Step 5. CERT.RSA is not the only file type. There can also be CERT.DSA and CERT.EC files.

ActivityLog - Application to Create Log File
This section provides a tutorial example on how to create application, ActivityLog, to create a log file to monitor activity lifecycle using the android.content.Context.openFi leOutput()method. 2015-09-01, 283👍, 1💬

Using VBScript with Windows Script Host
This section provides tutorial example on how to run a simple VBScript code file with the Windows Script Host tool. 2015-08-31, 241👍, 1💬

Video/Audio Stream Concatenation Order
This section provides a tutorial example of concatenation error message when using the 'concat' ffmpeg filter with incorrect video and audio stream order. 2015-08-23, 809👍, 2💬

💬 2015-08-23 Herong: You are welcome! What type of application are you using Flash for? I thought Flash is dead. Everyone is trying to replace it wit...

💬 2015-08-23 Queensoft: God THANK YOU !!! I tried to figure out this error for ages. It was as simple as placing video first, then audio !!!!!

Saving Images in BMP (Windows Bitmap) Format
This section provides a tutorial example on how to save an image in BMP (Windows Bitmap) format with 24-bit colors. 2015-08-22, 6095👍, 2💬

💬 2015-08-22 Herong: Gordon, the "Windows BMP image" format is actually the Windows BGR pixel format. You test it by create an image with RGB="3377ff...

💬 2015-08-19 gordon: But a real Windows bitmap file is BGR pixel format. Where is that option in Gimp?

Garbage Collection Tests
This chapter provides tutorial notes and example codes on garbage collection. Topics include garbage collection test program - GCTest2.java; comparisons between HotSpot 1.7.0, HotSpot 1.6.0 and JRockit R28.2.7. 2015-08-16, 202👍, 1💬

Setting up Gmail Access on Android Phone
This section provides a tutorial example on how to set up Gmail access on Android phones: 'Settings' > 'Account and sync' > 'Add account'. 2015-08-15, 1211👍, 1💬

💬 2015-08-15 nicholas patterson: It is a great day

"keytool -export/import" - Exporting and Importing Certificates
This section provides a tutorial example on how to use the 'keytool -export' command to export certificates out of a 'keystore' file. The 'keytool -import' command can be used to import certificates into a 'keystore' file. 2015-08-15, 26171👍, 1💬

💬 2015-08-14 Jay: This is exactly what i was looking for... thank you...

UTF-8 (Unicode Transformation Format - 8-Bit)
This chapter provides notes and tutorial examples on UTF-8 encoding. Topics including introduction of UTF-8 encoding; examples of encoded byte stream; UTF-8 encoding algorithm. 2015-08-10, 275👍, 1💬

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