Struts 2 interview questions and answers. Let us discuss struts 2 interview questions and answers for freshers & experienced. Dear readers, these Struts2 Interview Questions have been designed especially to get As per my experience, good interviewers hardly planned to ask any subject and later they continue based on further discussion and what you answer −. The core components of Struts2 are Action, Interceptors and Result pages. Struts2 Struts2 Interview Questions and Answers . OPRO Japan Announces the Launch of OPROARTS Apps Easy Merge PDF for teshimaryokan.info
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Struts2 is one of the famous framework for developing web application in java. Does Struts2 action and interceptors are thread safe? Which interceptor is responsible for mapping request parameters to action class Java Bean properties?. struts2 frequently asked interview questions,Know all strust2 interview questions asked in interviews on interceptors,struts2 framework. Searching for Apache Struts 2 job? Apache Struts 2 is an open-source web application framework for developing Java EE web applications. We have provided a detailed amount of Apache Struts 2 job interview questions and answers on this page.
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No notes for slide. Top struts2 interview questions and answers job interview tips 1. Top 20 struts2 interview questions and answers If you need top 7 free ebooks below for your job interview, please visit: Tell me about yourself? This is probably the most asked question in struts2 interview. It breaks the ice and gets you to talk about something you should be fairly comfortable with.
Have something prepared that doesn't sound rehearsed. It's not about you telling your life story and quite frankly, the interviewer just isn't interested. Unless asked to do so, stick to your education, career and current situation. Work through it chronologically from the furthest back to the present. Interview questions and answers — free pdf download Page 2 of 29 3.
Which architecture does Struts2 follow? Model to render. In case of Push-MVC the data Model is constructed and given to the view layer by the Controllers by putting it in the scoped variables like request or session. Pull-MVC on the other hand puts the model data typically constructed in Controllers are kept in a common place i. Struts2 is a Pull- MVC based architecture, in which all data is stored in Value Stack and retrieved by view layer for rendering.
Interview questions and answers — free pdf download Page 3 of 29 4. What makes you unique?
This will take an assessment of your experiences, skills and traits. Summarize concisely: This allows me to use my knowledge and break down information to be more user-friendly. Are Interceptors and Filters different? Apart from the fact that both Interceptors and filters are based on intercepting filter,there are few differences when it comes to Struts2. And can be configured to execute additional interceptor for a particular action execution. Which class is the front-controller in Struts2?
The class "org. FilterDis patcher " is the front controller in Struts2. In recent time Struts 2. The role of Action are to execute business logic or delegate call to business logic by the means of action methods which is mapped to request and contains business data to be used by the view layer by means of setters and getters inside the Action class and finally helps the framework decide which result to render Interview questions and answers — free pdf download Page 7 of 29 8.
How does Interceptors help achieve Struts2 a better framework than Struts1? Most of the trivial work are made easier to achieve for example automatic form population. Intelligent configuration and defaults for example you can have struts. POJO actions are even easier to unit test.
A ValueStack is a place where all the data related to action and the action itself is stored. Interview questions and answers — free pdf download Page 9 of 29 What is struts. If set to development mode, it gives the following benefits: Also remember that struts. By default it is "false". Interview questions and answers — free pdf download Page 10 of 29 What is the difference between empty default namespace and root name space?
If the namespace attribute is not defined in the package tag or assigned "" value then it is called empty default namespace. The root namespace is treated as all other explicit namespaces and must be matched. Interview questions and answers — free pdf download Page 11 of 29 What is the difference between Action and ActionSupport?
I would love to hear your thoughts and opinions on my articles directly. Recently I started creating video tutorials too, so do check out my videos on YouTube. Very nice explanation…!!
Thanks a lot brother…!!! God Bless you and fulfill your all wishes. Interceptors are not thread safe since it is a singleton. So can u please explain how will handle it in multi-threaded environment. Add it to the above question, provide a good book that provides an example of the enterprise apps. Can someone show me a practical example — most of us are talking through some abstractions and hence it is difficult to comprehend as to where we can practically apply these concepts.
Can we take an inventory application several times, I have seen people talking about Enterprise Apps to be developed using these frameworks and discuss how all this would fit in? I come with a strong enterprise apps background on main frames. Not in for interview questions but general struts2 overview questions.
Not disappointed. Your technical writing is top-notch! Hi pankaj , really nice article thanks a ton… Struts is usually integrated with Tiles frame work… Can you please add it with live example code Thanks in advance….
There are few things I would like to point out as custom result set and different type of result types like dispatcher , action forward etc.
Interview questions, Concepts and tutorials covered by you are awesome Pankaj. Thanks so much…: A Struts 2 Action instance is created for every request and do not need to be thread-safe. Conversely, Interceptors are shared between requests and must be thread-safe.
How does struts2. Struts 2 Action objects are instantiated for each request, so there are no thread-safety issues. In practice, servlet containers generate many throw-away objects per request, and one more object does not impose a performance penalty or impact garbage collection.
I know that Valuestack, request,session objects are created for each request from client. These objects are stored in the ActionContext which uses ThreadLocal. Your email address will not be published.
Leave this field empty. Exclusive Subscribers Only Posts and Updates Interview Tips, Latest Updates and much more You are here: Struts 2 Architecture Diagram. Previous Struts 2 Tutorial — Struts2 Tutorial. Comments Hi Pankaj, Very useful,thank you. Thank you for this useful post of struts framework interview questions. Exceptionally well and informative pre-interview questions. Thanks man. Below link not working.
When can we expect Hadoop stuff. Hi pankaj There are few things I would like to point out as custom result set and different type of result types like dispatcher , action forward etc.
Thread safety notes for Struts2 Action and Interceptor: Interceptors must be thread-safe! Please correct your answers for Q: Single source of repository for strut2 concepts…. Discuss some thing about the result types in struts2. Sir Please Add the Struts1. Very nice. Good work keep it up. Can you include Hibernate Questions in your site if possible?.
Please add questions related to Struts 2 tag library viz data tags, control tags etc. We can implement Action interface to create our action classes. This interface has a single method execute that we need to implement. ActionSupport class is the default implementation of Action interface and it also implements interfaces related to Validation and i18n support. We can override validate method of ActionSupport class to include field level validation login in our action classes.
Depending on the requirements, we can use any of the approaches to create struts 2 action classes, my favorite is ActionSupport class because it helps in writing validation and i18n logic easily in action classes.
However sometimes we need these access in action classes such as checking HTTP method or setting cookies in response. Posted in Uncategorized. You are commenting using your WordPress.
You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email. This site uses Akismet to reduce spam. Learn how your comment data is processed. Posted by: What is Struts2? What is interceptor in Struts2?
What are Struts2 core components? Struts2 core components are: Does Struts2 action and interceptors are thread safe? What are different ways to create Action classes in Struts2? Struts2 provide different ways to create action classes. By implementing Action interface Using Struts2 Action annotation By extending ActionSupport class Any normal java class with execute method returning String can be configured as Action class.
Which class is the Front Controller in Struts2? What are the benefits of Interceptors in Struts2? Some of the benefits of interceptors are: Interceptor plays a crucial role in achieving high level of separation of concerns. Struts2 interceptors are configurable, we can configure it for any action we want. We can create our own custom interceptors to perform some common tasks such as request params logging, authentication etc.