Skip to main content

About me

I moved to write on my own hosted blog at nguyenvanhuong.vn. Visit the website for new posts.

I am a software developer living in Vietnam. I started my career at Axon Active Vietnam, where I learned the fundamentals of building web enterprise systems with Java. After nearly five years of working with the low-code platform Axon.ivy, I decided to change my path and joined ubitec. There, I began working with Python to build an AI chatbot using Rasa. However, my company then rotated me to another team to build a chat platform using the open-source project Rocket.Chat, turning me into a full-time JavaScript developer for nearly another five years.

After spending several years in software development, I had the opportunity to gain valuable experience in various aspects of the field. It became clear to me that engineering management tasks often presented challenges that needed to be overcome. With this in mind, I aspired to become an active participant and concentrate on resolving any issues within my company's software development processes, particularly those related to engineering management.

The name of my blog, "vhandit", is short for "Van Huong and IT". 

Follow me on

Comments

  1. Bạn có thể add subscribe option trong website này để mình nhận được tin nhắn, email khi bạn post bài viết mới được không.

    Cám ơn bạn nhiều.

    Tuyền

    ReplyDelete
    Replies
    1. Cảm ơn ý kiến của @Tuyen Nguyen nhé. Tôi đã thêm gadget "Follow by Email" vào site. Ngoài ra bạn cũng có thể dùng http://feedly.com/. ;)

      Delete
  2. A cài plug in hiển thị code cho dễ đọc vs a

    ReplyDelete
    Replies
    1. Thank bạn nhé! Hazz...blog đang sử dụng Syntaxhighlighter, có thể bị vấn đề ở một số browser rồi, tôi kiểm tra lại xem sao. :(

      Delete
    2. xem được rồi, mới xem profile linkedin thì ra là bằng tuổi -.-

      Delete
  3. em cũng mới tập viết blog: thachleblog.com. Nếu được a ghé đọc góp ý với :D

    ReplyDelete
  4. bạn có thể viết thêm các bài review về các framework hay công nghệ mới của java không , JSF mình thấy ít cty dùng lằm mặc dù nó là con đẻ của JAVA

    ReplyDelete

Post a Comment

Popular posts from this blog

JSF, Primefaces - Invoking Application Code Even When Validation Failed

A use case I have a form which has requirements as follow: - There are some mandatory fields. - Validation is triggered when changing value on each field. - A button "Next" is enable only when all fields are entered. It turns to disabled if any field is empty. My first approach I defined a variable "isDisableNext" at a backend bean "Controller" for dynamically disabling/enabling the "Next" button by performing event "onValueChange", but, it had a problem: <h:form id="personForm"> <p:outputLabel value="First Name" for="firstName"/> <p:inputText id="firstName" value="#{person.firstName}" required="true"> <p:ajax event="change" listener="#{controller.onValueChange}" update="nextButton"/> </p:inputText> <p:outputLabel value="Last Name" for="lastName"/> <p:i...

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...

My must-have apps for daily work

There is no doubt that cool apps can help us be more productive and enjoyable at work. For the time being, I really love the following apps which are used by me almost every day. 1. A personal Kanban In fact, a personal kanban is the most useful app for me. Why does it matter? It is not just a to-do list, but it keeps me motivated every day because it helps me be able to know what my "big picture" is. I usually set up my plans together with a path to reach them.  KanbanFlow  is my preferred tool. KanbanFlow 2. A terminal Needless to say, a terminal is a must-have app for every developer, especially the ones use macOS/Linux. Due to its importance, I love to decorate and enhance it to be super exciting with various tools such as  iTerm ,  oh-my- zsh , and  thefuck . ;) iTerm + oh-my-zsh 3. A documentation "ecosystem" As a developer, I can not remember all things that I have experimented a day. Moreover, a document is really useful for sharing an...

Attribute 'for' of label component with id xxxx is not defined

I got the warning in the log file when I have used the tag <h:outputLabel> without attribute " for " in xhtml file. It was really polluting my server log files. The logged information actually makes sense anyway! We could find an answer as the following: "Having h:outputLabel without a "for" attribute is meaningless. If you are not attaching the label, you should be using h:outputText instead of h:outputLabel." However, these solutions are not possible just for my situation. Instead of using h:outputText for only displaying text, my team has used h:outputLabel too many places. We were nearly in our release time (next day) so it is quite risky and takes much efforts if we try to correct it. Because the style (with CSS) is already done with h:ouputLabel . The alternative by adding attribute " for " the existing h:outputLabel is not reasonable either. I really need to find another solution. Fortunately, I came across a way if I cha...

4 Remarkable Notes for JSF Apps Using HTML5

In the previous post , I've already shared with you how my team consults clients by using a HTML prototype. This post is about the used technologies for reusing the provided HTML template and communicating with backend. What is the issue when using HTML elements with Primefaces components? Primefaces is a great extension for developing JSF web apps. However, it is really frustrating in case we have to make it work with an existing HTML template. Why? - Primefaces has its own theme for styling. - Primefaces changes the HTML structure. Therefore, that would be a huge effort to use the Primefaces' components to replicate the elements of the HTML template; especially it is impossible for images drawing by " canvas " tag. That requires us to find a better approach. Since Java EE 7 (introducing JSF 2.2 included), it supports to use HTML5 elements . The idea is that JSF components don't effect the style and HTML structure, so we can easily reuse the provided HTM...