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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

JDBC-ODBC - Creating New Tables in MS Access Database
This section describes how to create a new table in a MS Access database through the JDBC-ODBC driver.
2016-01-07, 1280👍, 2💬

💬 2016-01-07 Herong: Bertus, what type query do you want to update?

💬 2016-01-06 bertus: How to update a query???

RsaKeyGenerator.java for RSA Key Generation
This section describes the initial draft of a RSA public key and private key generation implementation using the java.math.BigInteger class.
2017-01-05, 1264👍, 2💬

💬 2017-01-05 Herong: Alex, you are right. q should be selected independently from p. I will make a change in the next revision.

💬 2016-12-28 Alex T.: Using nextProbablePrime() to compute q appears somewhat risky to me: An attacker with the knowledge of N=p*q could simply comput...

XML Messages over Socket Connections
This section describes the XML message communication model - where client and server send and receive XML messages over socket communication connections.
2017-07-20, 1263👍, 5💬

💬 2017-07-20 WOW: WOW

💬 2015-11-11 Herong: Thai, you are welcome!

💬 2015-11-10 Thai Khang: Thanks

💬 2015-11-10 Khang: thanks

💬 2015-10-06 Thai Khang: Thank you so much

GetCitiesByCountry - Get Cities by Country
This chapter provides a quick introduction of the free Web service, GetCitiesByCountry, returning a list of all cities of a given country. Topics include usage description of GetCitiesByCountry; request message sample; response message sample.
2017-01-21, 1256👍, 4💬

💬 2017-01-21 Herong: Faisal, do you know how to make Web service calls in C#?

💬 2017-01-19 Faisal: how to use this web service in web forms ASP.Net Using C#

Converting KeyStore Files to PKCS12 Files
This section provides a tutorial example on how to convert a KeyStore file to a PKCS12 file, because Windows 'Internet Options' can import keys and certificates from PKCS12, but not from KeyStore file.
2016-02-07, 1256👍, 2💬

💬 2016-02-07 Herong: Steve, Fully agree! I put it in command line, because it is easier to document. I will put a warning the tutorial.

💬 2016-02-07 Steve: Hi! No password in command line , please ! Can be read in history... Bad practice :(

Why Sorting Is Needed?
This section describes why sorting is needed - Search in a sorted collection is much faster than an un-sorted collection.
2017-08-10, 1253👍, 3💬

💬 2017-08-10 Caleb E: Very Nice

💬 2015-11-27 Herong: Palash, Good article. Thanks for sharing it.

💬 2015-11-27 Palash Kanti Kundu: Hey thanks for the answer, I have given some more details on it. Please check this... Sorting, the burning problem in hand...

PC Register and Native Method Stack
This section describes PC Registers and Native Method Stacks, which are reserved one per thread. Normal Java applications do not have any significant impact on PC Registers and Native Method Stacks.
2016-05-13, 1244👍, 2💬

💬 2016-05-13 Herong: Kumar, I need some help from JVM experts to do that.

💬 2016-05-11 Kumar: Please explain it deeply,

Installing MySQL 4.0.18
This section provides a tutorial example on how to install MySQL 4.0.18 on a Windows system.
2015-07-30, 1236👍, 2💬

💬 2015-07-29 Herong: Stanley, what version of MySQL Control Center are you using?

💬 2015-07-28 stanley: hi, I need help, I downloaded the MySQL server, but it gives me an error on MySQL control center, "client does not support authe...

javax.swing.event.MenuListener - Menu Listener Interface
This section provides a tutorial example on how to use javax.swing.event.MenuListener ,menu listener interface, to catch events fired by JMenu objects.
2016-08-02, 1232👍, 3💬

💬 2016-08-02 Herong: Tony, I believe that * is a wildcard, meaning all classes in the javax.swing package.

💬 2016-07-20 tony narloch: Hi, I am curious as to what the * denotes. Is that a wildcard, or meant to any/all things associated with javax.swing?

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.
2017-08-29, 1226👍, 4💬

💬 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

PDF Printing Version
Information on how to obtain the PDF version of this book for printing.
2017-09-09, 1217👍, 3💬

💬 2015-10-14 srikanth: thanks

What is OFB (Output FeedBack) Operation Mode?
This section describes what is OFB (Output FeedBack) Operation Mode - each plaintext block is XORed with the current output block to be the ciphertext block. The current output block is the encrypted version of the previous output block.
2015-11-13, 1194👍, 2💬

💬 2015-11-13 Ashish: Hello world!

Detecting Java Thread Deadlocks with 'jstack'
This section provides a tutorial example on how to detect Java thread deadlocks with the thread stack trace dump tool, 'jstack'.
2016-02-01, 1190👍, 0💬

Introduction to Web Service
This chapter provides a quick introduction on Web services and related technologies.
2017-03-30, 1158👍, 4💬

💬 2017-03-30 ravi: This is to learn web services

💬 2015-12-13 A: Useful

U0600: Arabic
This section provides a quick summary of the Unicode code point block: 'Arabic', which contains 256 code points to represent alphabetic letters used in the Arabic language.
2015-08-07, 1157👍, 1💬

💬 2015-08-07 محمد خالد سعد حسي: From the table we change every word to its Unicode symbol the table from

Android Debug Bridge (adb) Tool
This section describes commands and options supported by the 'adb' tool. The 'adb help' command can give you details on how to use other 'adb' commands and options.
2017-08-05, 1147👍, 2💬

💬 2017-08-05 Herong: What is the -obb you are referring to?

💬 2017-08-03 AndroidUser: -obb doesn't work 1.0.31,32

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]

Java DB (Derby) - Inserting Data Rows to Existing Tables
This section describes how to insert new data rows into Java DB (Derby) database tables through the JDBC driver.
2017-08-05, 1110👍, 2💬

💬 2017-08-05 Herong: Stevoski, can you dump the Exception in the message dialog? It will give some clue on what happened to the execution.

💬 2017-08-03 Stevoski: is there any problem with these lines of code? all i get is invalid entry try{ String mk =jTextField1.getText(); String mn = jTe...

Drawing Graphics - Using paint() on Content Pane
This section provides a tutorial example on how to override the paint() method in the javax.swing.Component class to draw graphics (a rectangle) and use it as the content pane of the frame window.
2015-12-28, 1097👍, 2💬

💬 2015-12-28 Herong: Kenny, I agree with you. We should be able to draw directly on the default content pane. But we need to find a way to override i...

💬 2015-12-27 Kenny: But I see that this replaces the JFrame's default content pane with a new component? :/ I thought I *could* draw directly unto a...

PDF Printing Version: JVM Tutorials
Information on how to obtain the PDF version of this book for printing.
2016-12-05, 1093👍, 10💬

💬 2016-12-05 Rahul: very good

💬 2016-11-07 bob: thanks.

💬 2016-09-29 Awanputih: Thanks a bunch

💬 2016-06-21 Moxing: thanks

💬 2016-06-15 John Smith: Thanks

(More comments ...)

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, 1093👍, 1💬

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

Downloading and Installing JDK 1.8.0 on Windows
This section provides a tutorial example on how to download and install JDK 1.8.0 (Java SE 8) on a Windows 7 system. A simple Java program was entered, compiled, and executed with the new JDK installation.
2016-03-10, 1074👍, 2💬

💬 2016-03-10 sudha: thanks

💬 2015-09-22 ram: no

Chinese Character String with Big5 Encoding
This section providing information on handling Chinese character string literals in Big5 encoding.
2015-09-29, 1068👍, 1💬

💬 2015-09-29 你好: 你好

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