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Java Exception: "java.lang.OutOfMemoryError: Java heap space"
This section provides a tutorial example on how JVM expands the Heap space to allocate more objects and leads to the 'java.lang.OutOfMemoryError: Java heap space' Java exception, if it is not allowed to expand any more.
2018-06-24, 143👍, 1💬

💬 2018-06-24 Maria: Cool!

💬 2017-08-10 xionghongzhi: awsome artical!!!!!! thx!!!

Introduction to Web Service
This chapter provides a quick introduction on Web services and related technologies.
2018-06-18, 1331👍, 5💬

💬 2018-06-18 Poonam: Books are necessary.

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

💬 2015-12-13 A: Useful

Bitcoin Tutorials - Herong's Tutorial Notes
This free book is a collection of tutorials and notes on Bitcoin and blockchain.
2018-06-17, 646👍, 2💬

💬 2018-03-07 Neil Shrestha-Birtch: Awesome stuff again! I want to build my skills to be a Core dev one day!

💬 2018-02-16 Cindy: Very good for beginners!

Scripting Runtime DLL Library Overview
This section describes the Scripting Runtime DLL library, scrrun.dll, which offers Dictionary objects to store pairs of keys and values. scrrun.dll also offers FileSystemObject objects for you to manage local file systems.
2018-06-17, 236👍, 2💬

💬 2018-06-17 Herong: Julianna, Can you just terminate the script process with Task Manage?

💬 2018-06-14 Julianna: how to stop a running scrip on window 10?

What Is ASCII?
This section provides a quick introduction of ASCII (American Standard Code for Information Interchange) character set and encoding.
2018-06-15, 165👍, 1💬

💬 2018-06-15 z: Thanks

GB2312 vs. Unicode
A quick introduction of GB2312 is provided. Topics include GB2312 character set; Location Codes; Native Codes; Unicode; GBK encoding and Unicode character set.
2018-06-13, 827👍, 5💬

💬 2018-06-13 linfeng: This works finally. Thanks so much.

💬 2017-06-07 XuL: helpful.thx

💬 2016-02-15 Herong: Kunhai, you can run my Java program to generate the map. See GB2312Unicode.java - GB2312 to Unicode Mapping.

💬 2016-02-15 kunhai huang: i need the map

💬 2016-01-28 Cocono: Helpful.thx

64-bit RSA Key Validated by RsaKeyValidator.java
This section provides a tutorial example on how a 64-bit RSA key is validated by RsaKeyValidator.java with 3 rounds of encryption and decryption tests.
2018-06-09, 209👍, 2💬

💬 2018-06-09 Herong: Adrian, you are welcome!

💬 2018-06-09 Adrian: I needed in rush working 64-bit keys. You helped me a lot. Thanks! :D

What Is "leader" Formatting Object?
This section describes 'leader' formatting object, which is an inline-level formatting object that generates an inline area with flexible width with a repeating pattern to fill gaps between other inline areas.
2018-06-09, 191👍, 2💬

💬 2018-06-09 Herong: vik, a fill-in-the-blank form is just a normal PDF page created as an application form blank fields for people to fill in. The "...

💬 2018-06-08 vik: nice explanation and example. Could you please give an example for creating entry fields in fill-in-the-blank forms?

Printable Copy - PDF Version
Information on how to obtain the PDF version of this book for printing.
2018-06-09, 1770👍, 9💬

💬 2018-06-09 Herong: Sake, I think you can create a good MP3 Player with Java Swing.

💬 2018-06-02 sake: It can make advanced mp3Player whith java swing?

💬 2018-05-12 george: java

💬 2016-03-22 Herong: Keval, I will try my best. ☺

💬 2016-03-21 Keval: Please share more knowledge of java!

(More comments ...)

Microsoft JDBC Driver for SQL Server - sqljdbc42.jar
This chapter provides tutorial notes on sqljdbc42.jar, JDBC Driver 4.2 produced by Microsoft for SQL Server 2014. Topics include downloading and installing Microsoft JDBC Driver 4.2; loading sqljdbc42.jar; creating a connection to SQL Server with port number, instance name and database name; closing...
2018-06-06, 10013👍, 22💬

💬 2018-06-06 khui: thanks

💬 2018-01-07 jesse: thx

💬 2017-11-30 lebronjames: curry good

💬 2017-10-17 suku: hi

💬 2017-10-11 raghu: thanks

(More comments ...)

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.
2018-06-05, 5249👍, 4💬

💬 2017-01-02 sudhanshu: no comments

💬 2016-12-17 tangxy: thk, i just want to learn java

💬 2016-11-22 ankit: THANKS

2030-2040 Lunar Calendar
I've created Chinese Lunar calendars for my Chinese partner for ten years but your website calendars end at 2029 (http://www.herongyang.com/202 9/2029_chinese_calendar_v3.pdf )Can you please create more for me? marvin@metrocast.net Sure, just give me a few days. - Herong
2018-06-01, 646👍, 0💬

DBM Database Example - Book Records with Multiple Fields
This section provides a tutorial example of using DBM database files to build book records with multiple fields by joining them into a single string value.
2018-05-31, 143👍, 1💬

💬 2018-05-31 pat: I just wanted to let you know that your examples are very informative and helpful to the small project I am working on. Thank yo...

Showing Services under Each Process
This section provides a tutorial example on how to use command 'tasklist' to show all services under each running process with the service option '/SVC'.
2018-05-19, 168👍, 2💬

💬 2018-05-15 Herong: Hi John, you can pipe the output to the FIND command to get what you are looking for: tasklist /SVC | find "N/A"

💬 2018-04-30 John: Hello, Is there any way to list the processes that have no services (N/A) and their PID?

System.setProperty() - Setting Your Own Properties
This section provides a tutorial example on how to modify system properties provided by the JVM, and set your own properties into the system property map.
2018-05-15, 206👍, 2💬

About HerongYang.com
This web site provides a collection of about 40 free tutorial books on programming languages, Web applications, database, Chinese language and other topics. See the site map for a complete list of all tutorial books.
2018-05-14, 23027👍, 15💬

💬 2018-05-14 Claire Webcontentzone: Hi team at herongyang. How are you? Do you offer article placements on your site: herongyang. - We would get the article written...

💬 2017-07-14 Ghost: GJ

💬 2016-09-20 Keyur: The XMLPad tool is amazing. Excellent work. Thanks so much

💬 2016-09-12 Ankit Mehta: Hi, Just following up on my email sent last week. If you have any interest in selling your website, please let me know and I wou...

💬 2016-09-04 Herong: Vaishnavi, I am not interested in any type of link exchange offers. Thanks.

(More comments ...)

Downloading and Installing Java DB (Derby)
This section describes how to download and install Java DB (Derby database server) 10.11 - free for evaluation.
2018-05-10, 5153👍, 10💬

💬 2018-05-10 Anonomyus: tanks

💬 2016-02-19 Ali: Good App

💬 2016-02-02 kotyba: very nice

💬 2016-02-02 kotyba: thanks

💬 2015-10-30 govind: super

(More comments ...)

Receive Test Bitcoin from testnet.coinfaucet.eu
This section describes how to receive test Bitcoin from testnet.coinfaucet.eu.
2018-05-09, 148👍, 1💬

💬 2018-05-09 pankaj: Nice one to start with

Removing IE Addon "Skype Browser Helper"
This section provides a tutorial example on how to disable and remove 'Skype Browser Helper' addon from Internet Explorer.
2018-05-07, 4752👍, 6💬

💬 2018-05-07 Daniel Parker: Hi Herongyang.com, How are you doing today? I'm sure you have been contacted regarding this before but our value proposition is ...

💬 2017-07-15 Herong: Thomas, "Skype Browser Helper" add-on is part of the "Skype Click to Call" installed program. So uninstall "Skype Click to Call"...

💬 2017-07-14 Thomas: I also notice that these programs DO NOT APPEAR under Windows Programs and Features. Thus, your suggestion to go there and remov...

💬 2017-07-14 Thomas: Firstly, you mention how to disable the add-on, NOT how to REMOVE IT. Secondly, why are you talking about PDF Link Helper at all...

💬 2015-10-15 Theresa Zabolotny: There is no remove button on this one thanks or I would not be contacting you.

Checking FTP Server Log File
This section provides a tutorial example on how to check FTP server log file.
2018-04-28, 4939👍, 3💬

💬 2018-04-28 Herong: Scott, the IIS settings.

💬 2018-04-27 Scott: if you look at setting...... what settings?

💬 2016-09-25 Humphrey Bogart: meaningful comments

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, 2518👍, 5💬

💬 2016-03-22 Herong: Peter, I see the issue now. This example needs to be reviewed and updated. Thanks for the feedback.

💬 2016-03-21 peter winzell: x is not selected according to 0 < x < q

💬 2015-10-19 Herong: Hi Marian, do you have a question about this tutorial?

💬 2015-10-18 Marian: when q=3 x = 5 # selected: 0 < x < q

"-XX:+PrintGCDetails" - Garbage Collection Logging
This section describes HotSpot JVM options to generate garbage collection logging messages. It also describes log message format to help us understand what the JVM is telling us.
2018-04-23, 348👍, 1💬

Using WSDL2Java to Generate Web Service Stub Classes
This chapter provides tutorial notes and example codes on WSDL2Java. Topics include using the WSDL2Java tool included in Axis2 1.4.1; generating client side stub classes; using stub and data type classes; testing stub classes with XML document and RPC method based Web services.
2018-04-22, 11450👍, 9💬

💬 2018-04-22 test name: thanks

💬 2017-01-20 Stephen: Hi , thanks for this tutorial

💬 2016-02-24 Herong: NfeDownloadNFStub, do you need any help on your WSDL document?

💬 2016-02-23 NfeDownloadNFStub: &lt;?xml version="1.0" encoding="UTF-8"?> &lt;wsdl:definitions xmlns:s="http://www.w3.org/2001/XMLS chema"xmlns:soap12="...

💬 2015-12-18 prem: thanks

SOAP Web Service and SoapUI
This chapter provides tutorial notes and example codes on testing SOAP Web services with SoapUI. Topics include introduction of SOAP protocol and WSDL documents; creating SOAP projects by loading WSDL documents in SoapUI; submitting SOAP Web service requests; viewing HTTP request and response raw da...
2018-04-21, 208👍, 2💬

💬 2018-04-21 Herong: Jay, thanks for your comment!

💬 2018-04-20 Jay Bodkin: When deciding whether to use SOAP or WSDL, always remember the saying "Use SOAP when you are dirty (ie need security) and REST w...

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