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Browse OpenJDK Java source code in Eclipse
Java 8 was recently released, many developers are now trying to extract the source code of Java 8 to find out how the new added features such as Lambda expressions, default method in interfaces, new Time API are implemented. How do you manage to download and browse the source code? Today we are going to show how to extract OpenJDK Java source code to Eclipse. Since OpenJDK is adopting Mercurial as its distributed version control system, you need to install Mercurial on your computer first before...
OpenJDK,Java 8,Source code,Eclipse 2014-06-16 00:53:34
Why accessing Java HashMap may cause infinite loop in concurrent environment
HashMap in Java is frequently used to handle key/value pairs. But it is not a good candidate to be used in concurrent environment where ConcurrentHashMap should be used instead. If used in concurrent environment, it may cause lots of unexpected behavior even including make the program getting into an infinite loop situation. To understand how this can happen, let's first discuss how HaspMap works internally. In this post we will use implementation of HashMap before Java 8 as example, Java 8 prov...
JAVA,HASHMAP,INFINITE LOOP 2020-03-29 01:47:00
php://input in PHP
When using xml-rpc, server side will get the data from client with php://input method instead of $_POST. Hence today we will discuss php://input. PHP official manual has below explanation to php://input: “php://input allows you to read raw POST data. It is a less memory intensive alternative to $HTTP_RAW_POST_DATA and does not need any special php.ini directives. php://input is not available with enctype=”multipart/form-data”. Here we und...
php://input, IO, input 2013-02-25 20:43:00
How long does the heuristic cache of the browser actually cache?
Heuristic cache Heuristic caching is the default behavior of browser caching (i.e., for responses without Cache-Control), which is not simply "not caching", but implicitly caching based on the so-called "heuristic cache". HTTP is designed to cache as much as possible, so even if Cache-Control is not specified, the response will be stored and reused if certain conditions are met. This is called heuristic caching. HTTP/1.1 200 OK Content-Type: text/html Content-Length: 1024 Date: Tue, 22 Feb 2022 ...
HEURISTIC CACHE,WEB DESIGN 2023-05-26 08:40:13
Why Flash didn’t work out on mobile devices
The debate over whether supporting the Adobe Flash plug-in on mobile devices is a feature or not is over. Last night, ZDNet got hold of a leaked Adobe announcement: It’s abandoning its work on Flash for mobile. It’s not a huge surprise that it came to this, since Adobe had been struggling to optimize the performance, and the tide has been turning toward HTML5.From the Adobe announcement ZDNet published:Our future work with Flash on mobile devices will be focused on enabling Fl...
Flash,HTML5,Advantage,Merit,Mobile device,Support 2011-11-15 03:15:12
About C++ comma operator precedence
When learning programming language, we will always have one topic about the operator precedence. Since there are many operators can be used in one expression, there should be some rules regarding which operation can happen first so that the compiler or interpreter can handle them correctly. One rule of programming with expression is using as much as brackets as you can to avoid unexpected results. Here we refer one problem we see online about the comma operator in C++. The following program has ...
comma,precedence 2012-11-12 10:25:00
Different ways to print "Hello world" in Java
This post is not about best practice to print "Hello world" in Java, it is about exploring different capabilities offered by Java. Also there are articles about printing "Hello world" in different programming languages, but this post is not about that. Standard literal The most commonly used way is to use System.out to print"Hello world". System.out.println("Hello world"); Enumeration An enumeration can define a set of values belonging to one category. For example, an enumeration for all months ...
Hurry up!Upgrade your Windows 8 before February 1
Microsoft announced on its official blog the price to upgrade to Windows 8 Pro would increase from $40 to $200 starting from February 1.According to the data released by Microsoft at the CES conference, since on sales in October last year, 60 million copies of Windows 8 licenses are sold, but they did not disclose the specific amount of activation. In order to attract users to upgrade to Windows 8, Microsoft set the upgrade fee to $39.99.Microsoft said that the price would change as follows fro...
Google will launch new rendering engine Blink
Google announced new rendering engine Blink derived from the open source WebKit on Chromium project's official blog. This is to speed up the innovation and development process. It will take some time for Chrome to switch from Webkit to Blink.Opera has just switched to WebKit, what will they think about Google's move? Opera's Bruce Lawson said in a blog that Opera browser would use Blink engine and contribute to Blink community.For Google, a powerful rendering engine means that Chrome OS ca...
Google,Blink,,Webkit,Render engine 2013-04-04 04:11:23
Microsoft announces new Microsoft Band
Microsoft just announced a new Microsoft Band on a new product release event held in New York today. This new device is the second generation of the smart wearable device since the first generation announced around 1 year back(29 October, 2014). The biggest change of the new Microsoft Band is that it has a whole new design with curved screen. It now can be better adept to our body structure. In addition to this, there are a few other features as well. Below is a list of the features this new Mi...
MICROSOFT BAND 2,MICROSOFT 2015-10-06 09:51:41
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