AngularJS - Using broadcast or shared service to communicate controllers' data

Either using broadcast approach or shared service is enough to solve the problem about communicating data between two controllers. Using broadcast can update immediately the child controller data when performing an event on parent.

Code example on Codepen :
http://codepen.io/vnnvanhuong/pen/ojXJRw?editors=101

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The HelloWorld example of JSF 2.2 with Myfaces

I just did by myself create a very simple app "HelloWorld" of JSF 2.2 with a concrete implementation Myfaces that we can use it later on for our further JSF trying out. I attached the source code link at the end part. Just follow these steps below: 1. Create a Maven project in Eclipse (Kepler) with a simple Java web application archetype "maven-archetype-webapp". Maven should be the best choice for managing the dependencies , so far. JSF is a web framework that is the reason why I chose the mentioned archetype for my example. 2. Import dependencies for JSF implementation - Myfaces (v2.2.10) into file pom.xml . The following code that is easy to find from http://mvnrepository.com/ with key words "myfaces". <dependency> <groupId>org.apache.myfaces.core</groupId> <artifactId>myfaces-api</artifactId> <version>2.2.10</version> </dependency> <dependency> <groupId>org.apache.myfaces.core<...

Multiple Inheritance of State and Implementation

Today, I was just curious about why an enum can not extend anything else. I took a look on the Oracle document here , and I found the answer is below: "All enums implicitly extend java.lang.Enum. Because a class can only extend one parent (see Declaring Classes), the Java language does not support multiple inheritance of state (see Multiple Inheritance of State, Implementation, and Type), and therefore an enum cannot extend anything else." I have been learned of it before. But, wait a sec...! Why Java does not support multiple inheritance of state? Since I have worked with other programming languages like C++, I was able to make a class extend some other classes. The short answer is to avoid the issues of multiple inheritance of state . I wonder if other programming languages have these below terms but Java does. Multiple inheritance of state It is the ability to inherit fields from multiple classes. There is a problem and Java avoids it. "For exa...

Junit - Test fails on French or German string assertion

In my previous post about building a regex to check a text without special characters but allow German and French . I met a problem that the unit test works fine on my machine using Eclipse, but it was fail when running on Jenkins' build job. Here is my test: @Test public void shouldAllowFrenchAndGermanCharacters(){ String source = "ÄäÖöÜüß áÁàÀâÂéÉèÈêÊîÎçÇ"; assertFalse(SpecialCharactersUtils.isExistSpecialCharater(source)); } Production code: public static boolean isExistNotAllowedCharacters(String source){ Pattern regex = Pattern.compile("^[a-zA-Z_0-9_ÄäÖöÜüß áÁàÀâÂéÉèÈêÊîÎçÇ]*$"); Matcher matcher = regex.matcher(source); return !matcher.matches(); } The result likes the following: Failed tests: SpecialCharactersUtilsTest.shouldAllowFrenchAndGermanCharacters:32 null A guy from stackoverflow.com says: "This is probably due to the default encoding used for your Java source files. The ö in the string literal in the J...

AngularJS Fundamentals

1. Single Page Application (SPA) - Single page application versus Traditional multi-page - " Single-Page Applications (SPAs) are Web apps that load a single HTML page and dynamically update that page as the user interacts with the app. SPAs use AJAX and HTML5 to create fluid and responsive Web apps, without constant page reloads. However, this means much of the work happens on the client side, in JavaScript " src: https://msdn.microsoft.com/en-us/magazine/dn463786.aspx - " Web browser JavaScript frameworks, such as AngularJS, Ember.js, ExtJS and React have adopted SPA principles " src: https://en.wikipedia.org/wiki/Single-page_application 2. Directive and Data Binding Expression <!DOCTYPE html> <html lang="en-US"> <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script> <body> <div ng-app=""> <p>Name : <input type="text" ng...

14 books I have read in 2020

1. Cha Voi: Dạy con nên người ở thời đại số Author: Trương Nguyện Thành Language: Vietnamese I love the methodology of parenting so-called Cha Voi (elephant father). It is neither very strict nor easy. The parents take themself as an example to lead their children. 2. Release it! Design and Deploy Production-Ready Software Author: Michael T. Nygard Language: English It was fun to read stories about how the author investigate and solve the issues of software running on production. I learned lots of terms and strategies to ensure stable software such as health check, circuit breaker, logging, monitoring, etc, ... 3. Algorithms to Live By: The Computer Science of Human Decisions Author: Brian Christian and Tom Griffiths Language: English When talking about algorithms, people usually think it is something complicated and also for computer science only. However, algorithms are actually steps to solve a problem. Life consists of lots of problems. We can use the power of algorith...

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