Ethereum Tutorials - Herong's Tutorial Notes
This free book is a collection of tutorials and notes on Ethereum and blockchain. Topics include Blockchain, Ethereum, Cryptocurrency, Mining, MetaMask, Wallet. 2018-03-11, 251👍, 1💬
"aapt" - Android Asset Packaging Tool
This section describes 'aapt', the Android Asset Packaging Tool, which can be used to list, add and remove files in an APK file, package resources, crunching PNG files, etc. 2015-11-16, 1860👍, 1💬
Synchronization Technique and Synchronized Code Blocks
This chapter provides tutorial notes and tutorial examples on synchronization technique and synchronized code blocks. Topics include what is the synchronization technique; synchronized class methods, instance methods, statement blocks; synchronized banking application sample. 2015-11-13, 219👍, 1💬
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, 1243👍, 2💬
GenerateBarCode - Usage Description
This section describes the free Web service GenerateBarCode provided by WebserviceX.NET. GenerateBarCode allows you to generate bar code images in formats of Code 128, Code 39, Code 93, EAN13, Supp2, UPC A, and more. 2015-11-11, 523👍, 1💬
setMnemonic() - Setting Keyboard Mnemonics on Menu Items
This section provides a tutorial example on how to use setMnemonic() method to associate mnemonics to menu items. Mnemonics allows user to interact with menu items using keys on keyboard. 2015-11-10, 382👍, 1💬
Installing and Running Java DB - Derby
This chapter provides tutorial notes on downloading, installing and setting up Java DB (Derby) server. Topics include downloading and installing Java DB 10.5.3; verifying Java DB execution environment; running Java DB in Network Server mode; using 'ij' to create database and tables. 2015-11-08, 1549👍, 3💬
Using "Process" Class to Show Memory Usages
This section provides a tutorial example on how to retrieve memory usage statistics of your application using methods and properties of the System.Diagnostics.Process class. 2015-11-06, 1403👍, 1💬
Converting Secret Keys to and from Byte Arrays
This section provides a quick introduction of the SecretKeySpec class and the KeySpec interface. They can be used to convert secret keys into byte arrays to store them in external files. 2015-11-03, 5243👍, 1💬
Option Dialog Boxes
This chapter provides tutorial notes and example codes on option dialog box. Topics include creating and displaying message, confirmation, input and option dialog boxes; receiving input values from option dialog boxes; creating and display internal dialog boxes; creating option dialog box directly. 2015-11-02, 257👍, 1💬
UTF-32, UTF-32BE and UTF-32LE Encodings
This chapter provides notes and tutorial examples on UTF-32, UTF-32BE and UTF-32LE encodings. Topics including encoding and decoding logics of UTF-32, UTF-32BE and UTF-32LE encodings; explanation of the use of BOM (Byte Order Mark). 2015-11-01, 267👍, 1💬
Sending and Receiving Cookies - Example
This section provides a tutorial example on how to set and send a cookie with the setcookie() function, and how to receive a cookie with the $_COOKIE array. 2015-10-31, 1358👍, 1💬
Input Text Data from Web Forms
This chapter provides tutorial notes on input text data from Web forms. Topics include creating Web form; receiving input text data with PHP the $_REQUEST array; input text data in ASCII, Latin1 and UTF-8 encoding; entering Latin1 characters with Alt keycodes. 2015-10-29, 243👍, 2💬
JDBC-ODBC Bridge Driver - Flat Text Files
This chapter provides tutorial notes on using JDBC-ODBC Bridge to access data stored in flat text files. Topics include creating tab delimited data files; creating and configuring DSN for flat data files; running queries on flat files. 2015-10-27, 1041👍, 1💬
What Is scrrun.dll?
This section describes what is scrrun.dll - the Scripting Runtime DLL (Dynamic Link Library) provided by Microsoft with 6 classes: Dictionary, FileSystemObject, Drive, Folder, File, and TextStream. 2015-10-23, 3088👍, 2💬
Location: - Forcing the Browser to Redirect to Another URL
This section provides a tutorial example on how to insert the 'Location:' header line in a HTTP response to tell the browser to do a URL redirect - Send a HTTP request to the specified ULR immediately. 2015-10-21, 418👍, 4💬
Startup Programs Removal for Better System Performance
This chapter provides a quick introduction of system startup programs. Topics include system performance affected by startup programs, listing startup program with HijackThis, locations of startup program settings, removing startup program setting from Windows registry and startup folders. 2015-10-19, 166👍, 1💬
This section provides a tutorial example on how to convert XML documents into pretty print format us...
This section provides a tutorial example on how to write a sample program to create a SSL client soc...
This section provides a tutorial example on how to perform validation of a certificate path with the...
This free book contains Herong's notes and tutorial examples on Chinese GB2312 character set. It pro...
This section provides a tutorial example on how to use SHA1 message digest algorithm in Java. The JD...