Servlet is java class which extends the functionality of web server by dynamically generating web pages.
Servlet technology is used to create Dynamic web application. Servlet technology is robust and scalable. init() and service() methods are more important in life cycle of a servlet. doGet() and doPost() are methods used under service() method.
Topics:servlet config, servlet filters,servlet context,session tracking
To know more about
Offer- http://mazenet-chennai.in/mazenet-offers.html
Syllabus- http://www.mazenet-chennai.in/java-training-in-chennai.html
Slide share: http://www.slideshare.net/mazenet_solution/presentations
For more events- http://mazenet-chennai.in/mazenet-events.html
Slide share- https://www.youtube.com/c/Mazenetsolution
Facebook- https://www.facebook.com/Mazenet.IT.Solution/
Twitter- https://twitter.com/Maze_net
Mail us : marketing@mazenetsolution.com
Contact: 9629728714
Servlet is java class which extends the functionality of web server by dynamically generating web pages.
Servlet technology is used to create Dynamic web application. Servlet technology is robust and scalable. init() and service() methods are more important in life cycle of a servlet. doGet() and doPost() are methods used under service() method.
Topics:servlet config, servlet filters,servlet context,session tracking
To know more about
Offer- http://mazenet-chennai.in/mazenet-offers.html
Syllabus- http://www.mazenet-chennai.in/java-training-in-chennai.html
Slide share: http://www.slideshare.net/mazenet_solution/presentations
For more events- http://mazenet-chennai.in/mazenet-events.html
Slide share- https://www.youtube.com/c/Mazenetsolution
Facebook- https://www.facebook.com/Mazenet.IT.Solution/
Twitter- https://twitter.com/Maze_net
Mail us : marketing@mazenetsolution.com
Contact: 9629728714
A Java servlet is a Java program that extends the capabilities of a server. Although servlets can respond to any types of requests, they most commonly implement applications hosted on Web servers. Such Web servlets are the Java counterpart to other dynamic Web content technologies such as PHP and ASP.NET.
Quarkus Hidden and Forbidden ExtensionsMax Andersen
Quarkus has a vast extension ecosystem and is known for its subsonic and subatomic feature set. Some of these features are not as well known, and some extensions are less talked about, but that does not make them less interesting - quite the opposite.
Come join this talk to see some tips and tricks for using Quarkus and some of the lesser known features, extensions and development techniques.
Large Language Models and the End of ProgrammingMatt Welsh
Talk by Matt Welsh at Craft Conference 2024 on the impact that Large Language Models will have on the future of software development. In this talk, I discuss the ways in which LLMs will impact the software industry, from replacing human software developers with AI, to replacing conventional software with models that perform reasoning, computation, and problem-solving.
Prosigns: Transforming Business with Tailored Technology SolutionsProsigns
Unlocking Business Potential: Tailored Technology Solutions by Prosigns
Discover how Prosigns, a leading technology solutions provider, partners with businesses to drive innovation and success. Our presentation showcases our comprehensive range of services, including custom software development, web and mobile app development, AI & ML solutions, blockchain integration, DevOps services, and Microsoft Dynamics 365 support.
Custom Software Development: Prosigns specializes in creating bespoke software solutions that cater to your unique business needs. Our team of experts works closely with you to understand your requirements and deliver tailor-made software that enhances efficiency and drives growth.
Web and Mobile App Development: From responsive websites to intuitive mobile applications, Prosigns develops cutting-edge solutions that engage users and deliver seamless experiences across devices.
AI & ML Solutions: Harnessing the power of Artificial Intelligence and Machine Learning, Prosigns provides smart solutions that automate processes, provide valuable insights, and drive informed decision-making.
Blockchain Integration: Prosigns offers comprehensive blockchain solutions, including development, integration, and consulting services, enabling businesses to leverage blockchain technology for enhanced security, transparency, and efficiency.
DevOps Services: Prosigns' DevOps services streamline development and operations processes, ensuring faster and more reliable software delivery through automation and continuous integration.
Microsoft Dynamics 365 Support: Prosigns provides comprehensive support and maintenance services for Microsoft Dynamics 365, ensuring your system is always up-to-date, secure, and running smoothly.
Learn how our collaborative approach and dedication to excellence help businesses achieve their goals and stay ahead in today's digital landscape. From concept to deployment, Prosigns is your trusted partner for transforming ideas into reality and unlocking the full potential of your business.
Join us on a journey of innovation and growth. Let's partner for success with Prosigns.
Gamify Your Mind; The Secret Sauce to Delivering Success, Continuously Improv...Shahin Sheidaei
Games are powerful teaching tools, fostering hands-on engagement and fun. But they require careful consideration to succeed. Join me to explore factors in running and selecting games, ensuring they serve as effective teaching tools. Learn to maintain focus on learning objectives while playing, and how to measure the ROI of gaming in education. Discover strategies for pitching gaming to leadership. This session offers insights, tips, and examples for coaches, team leads, and enterprise leaders seeking to teach from simple to complex concepts.
Software Engineering, Software Consulting, Tech Lead.
Spring Boot, Spring Cloud, Spring Core, Spring JDBC, Spring Security,
Spring Transaction, Spring MVC,
Log4j, REST/SOAP WEB-SERVICES.
TROUBLESHOOTING 9 TYPES OF OUTOFMEMORYERRORTier1 app
Even though at surface level ‘java.lang.OutOfMemoryError’ appears as one single error; underlyingly there are 9 types of OutOfMemoryError. Each type of OutOfMemoryError has different causes, diagnosis approaches and solutions. This session equips you with the knowledge, tools, and techniques needed to troubleshoot and conquer OutOfMemoryError in all its forms, ensuring smoother, more efficient Java applications.
top nidhi software solution freedownloadvrstrong314
This presentation emphasizes the importance of data security and legal compliance for Nidhi companies in India. It highlights how online Nidhi software solutions, like Vector Nidhi Software, offer advanced features tailored to these needs. Key aspects include encryption, access controls, and audit trails to ensure data security. The software complies with regulatory guidelines from the MCA and RBI and adheres to Nidhi Rules, 2014. With customizable, user-friendly interfaces and real-time features, these Nidhi software solutions enhance efficiency, support growth, and provide exceptional member services. The presentation concludes with contact information for further inquiries.
In 2015, I used to write extensions for Joomla, WordPress, phpBB3, etc and I ...Juraj Vysvader
In 2015, I used to write extensions for Joomla, WordPress, phpBB3, etc and I didn't get rich from it but it did have 63K downloads (powered possible tens of thousands of websites).
Code reviews are vital for ensuring good code quality. They serve as one of our last lines of defense against bugs and subpar code reaching production.
Yet, they often turn into annoying tasks riddled with frustration, hostility, unclear feedback and lack of standards. How can we improve this crucial process?
In this session we will cover:
- The Art of Effective Code Reviews
- Streamlining the Review Process
- Elevating Reviews with Automated Tools
By the end of this presentation, you'll have the knowledge on how to organize and improve your code review proces
Check out the webinar slides to learn more about how XfilesPro transforms Salesforce document management by leveraging its world-class applications. For more details, please connect with sales@xfilespro.com
If you want to watch the on-demand webinar, please click here: https://www.xfilespro.com/webinars/salesforce-document-management-2-0-smarter-faster-better/
How to Position Your Globus Data Portal for Success Ten Good PracticesGlobus
Science gateways allow science and engineering communities to access shared data, software, computing services, and instruments. Science gateways have gained a lot of traction in the last twenty years, as evidenced by projects such as the Science Gateways Community Institute (SGCI) and the Center of Excellence on Science Gateways (SGX3) in the US, The Australian Research Data Commons (ARDC) and its platforms in Australia, and the projects around Virtual Research Environments in Europe. A few mature frameworks have evolved with their different strengths and foci and have been taken up by a larger community such as the Globus Data Portal, Hubzero, Tapis, and Galaxy. However, even when gateways are built on successful frameworks, they continue to face the challenges of ongoing maintenance costs and how to meet the ever-expanding needs of the community they serve with enhanced features. It is not uncommon that gateways with compelling use cases are nonetheless unable to get past the prototype phase and become a full production service, or if they do, they don't survive more than a couple of years. While there is no guaranteed pathway to success, it seems likely that for any gateway there is a need for a strong community and/or solid funding streams to create and sustain its success. With over twenty years of examples to draw from, this presentation goes into detail for ten factors common to successful and enduring gateways that effectively serve as best practices for any new or developing gateway.
Providing Globus Services to Users of JASMIN for Environmental Data AnalysisGlobus
JASMIN is the UK’s high-performance data analysis platform for environmental science, operated by STFC on behalf of the UK Natural Environment Research Council (NERC). In addition to its role in hosting the CEDA Archive (NERC’s long-term repository for climate, atmospheric science & Earth observation data in the UK), JASMIN provides a collaborative platform to a community of around 2,000 scientists in the UK and beyond, providing nearly 400 environmental science projects with working space, compute resources and tools to facilitate their work. High-performance data transfer into and out of JASMIN has always been a key feature, with many scientists bringing model outputs from supercomputers elsewhere in the UK, to analyse against observational or other model data in the CEDA Archive. A growing number of JASMIN users are now realising the benefits of using the Globus service to provide reliable and efficient data movement and other tasks in this and other contexts. Further use cases involve long-distance (intercontinental) transfers to and from JASMIN, and collecting results from a mobile atmospheric radar system, pushing data to JASMIN via a lightweight Globus deployment. We provide details of how Globus fits into our current infrastructure, our experience of the recent migration to GCSv5.4, and of our interest in developing use of the wider ecosystem of Globus services for the benefit of our user community.
Strategies for Successful Data Migration Tools.pptxvarshanayak241
Data migration is a complex but essential task for organizations aiming to modernize their IT infrastructure and leverage new technologies. By understanding common challenges and implementing these strategies, businesses can achieve a successful migration with minimal disruption. Data Migration Tool like Ask On Data play a pivotal role in this journey, offering features that streamline the process, ensure data integrity, and maintain security. With the right approach and tools, organizations can turn the challenge of data migration into an opportunity for growth and innovation.
Your Digital Assistant.
Making complex approach simple. Straightforward process saves time. No more waiting to connect with people that matter to you. Safety first is not a cliché - Securely protect information in cloud storage to prevent any third party from accessing data.
Would you rather make your visitors feel burdened by making them wait? Or choose VizMan for a stress-free experience? VizMan is an automated visitor management system that works for any industries not limited to factories, societies, government institutes, and warehouses. A new age contactless way of logging information of visitors, employees, packages, and vehicles. VizMan is a digital logbook so it deters unnecessary use of paper or space since there is no requirement of bundles of registers that is left to collect dust in a corner of a room. Visitor’s essential details, helps in scheduling meetings for visitors and employees, and assists in supervising the attendance of the employees. With VizMan, visitors don’t need to wait for hours in long queues. VizMan handles visitors with the value they deserve because we know time is important to you.
Feasible Features
One Subscription, Four Modules – Admin, Employee, Receptionist, and Gatekeeper ensures confidentiality and prevents data from being manipulated
User Friendly – can be easily used on Android, iOS, and Web Interface
Multiple Accessibility – Log in through any device from any place at any time
One app for all industries – a Visitor Management System that works for any organisation.
Stress-free Sign-up
Visitor is registered and checked-in by the Receptionist
Host gets a notification, where they opt to Approve the meeting
Host notifies the Receptionist of the end of the meeting
Visitor is checked-out by the Receptionist
Host enters notes and remarks of the meeting
Customizable Components
Scheduling Meetings – Host can invite visitors for meetings and also approve, reject and reschedule meetings
Single/Bulk invites – Invitations can be sent individually to a visitor or collectively to many visitors
VIP Visitors – Additional security of data for VIP visitors to avoid misuse of information
Courier Management – Keeps a check on deliveries like commodities being delivered in and out of establishments
Alerts & Notifications – Get notified on SMS, email, and application
Parking Management – Manage availability of parking space
Individual log-in – Every user has their own log-in id
Visitor/Meeting Analytics – Evaluate notes and remarks of the meeting stored in the system
Visitor Management System is a secure and user friendly database manager that records, filters, tracks the visitors to your organization.
"Secure Your Premises with VizMan (VMS) – Get It Now"
Exploring Innovations in Data Repository Solutions - Insights from the U.S. G...Globus
The U.S. Geological Survey (USGS) has made substantial investments in meeting evolving scientific, technical, and policy driven demands on storing, managing, and delivering data. As these demands continue to grow in complexity and scale, the USGS must continue to explore innovative solutions to improve its management, curation, sharing, delivering, and preservation approaches for large-scale research data. Supporting these needs, the USGS has partnered with the University of Chicago-Globus to research and develop advanced repository components and workflows leveraging its current investment in Globus. The primary outcome of this partnership includes the development of a prototype enterprise repository, driven by USGS Data Release requirements, through exploration and implementation of the entire suite of the Globus platform offerings, including Globus Flow, Globus Auth, Globus Transfer, and Globus Search. This presentation will provide insights into this research partnership, introduce the unique requirements and challenges being addressed and provide relevant project progress.
How Recreation Management Software Can Streamline Your Operations.pptxwottaspaceseo
Recreation management software streamlines operations by automating key tasks such as scheduling, registration, and payment processing, reducing manual workload and errors. It provides centralized management of facilities, classes, and events, ensuring efficient resource allocation and facility usage. The software offers user-friendly online portals for easy access to bookings and program information, enhancing customer experience. Real-time reporting and data analytics deliver insights into attendance and preferences, aiding in strategic decision-making. Additionally, effective communication tools keep participants and staff informed with timely updates. Overall, recreation management software enhances efficiency, improves service delivery, and boosts customer satisfaction.
Developing Distributed High-performance Computing Capabilities of an Open Sci...Globus
COVID-19 had an unprecedented impact on scientific collaboration. The pandemic and its broad response from the scientific community has forged new relationships among public health practitioners, mathematical modelers, and scientific computing specialists, while revealing critical gaps in exploiting advanced computing systems to support urgent decision making. Informed by our team’s work in applying high-performance computing in support of public health decision makers during the COVID-19 pandemic, we present how Globus technologies are enabling the development of an open science platform for robust epidemic analysis, with the goal of collaborative, secure, distributed, on-demand, and fast time-to-solution analyses to support public health.
Unleash Unlimited Potential with One-Time Purchase
BoxLang is more than just a language; it's a community. By choosing a Visionary License, you're not just investing in your success, you're actively contributing to the ongoing development and support of BoxLang.
3. Question
• Blocking I/O model
recvfrom
application
System call
Process
datagram
Process blocks in
call to recvfrom
Wait for data
Copy data from
kernel to user
No datagram
ready
Datagram ready
Copy datagram
Copy complete
Return OK
kernel
4. Question
• Non-Blocking I/O model
recvfrom
application
System call
Process
datagram
Process repeatedly
calls recvfrom
waiting for an OK
return(polling)
Wait for data
Copy data from
kernel to user
No datagram
ready
Datagram ready
Copy datagram
Copy complete
Return OK
kernel
EWOULDBLOCK
recvfrom
System call No datagram
readyEWOULDBLOCK
5. Question
• Asynchronous I/O model
recvfrom
application
System call
Signal handler
process
datagram
Process continues
executing
Wait for data
Copy data from
kernel to user
No datagram
ready
Datagram ready
Copy datagram
Copy complete
Deliver signal
specofied in recvfrom
kernel
return
6. Question
• Synchronous I/O
• Definition
– A synchronous I/O operation causes the
requesting process to be blocked until that I/O
operation completes.
7. Question
• How to solve multiple I/O devices?
• Use select()
A
B
A
Select()
device
12. Introduction
• You can use JSP or servlet to solve dynamic
web page needs. JSP is web page design
oriented, and servlet is program designed
oriented. Knowing their character can
cooperate two expertise and make the
achievement better.
13. CGI
• Common Gateway Interface
• A standard method for web server software to
delegate the generation of web content to
executable files.
• Web server send request to external program,
and the program response with static file.
14. CGI
Web Server
CGI Program Database
Web Browser
1. Request
2. Input data
3. May access database
4. Response as HTML doc
Figure: CGI workflow
15. CGI
• CGI can designed as any computer language.
Perl is the most popular.
• When server receive a request, it produce a
new process to execute CGI program.
• Consume many memory.
• Each CGI program is isolated.
16. Servlet
• In order to solve the disadvantage of CGI,
servlet is developed.
• Servlet is designed to substitute CGI.
• The word servlet is composed of “server” and
“let”. In Java, “let” means small application.
• Servlet is run in server side, and applet is run
in client side.
17. Servlet
Client Browser Web Server
Servlet Container
Servlet
1. Browser
requests page
2. Web server
delegates to container
3. Container executes servlet,
creating instance if required
4. Servlet executes,
generates response
5. Server
returns response
Figure: Servlet workflow
18. Servlet
• Web container
– Execute JSP and servlet.
– Like Java only recognizes JVM, servlet/JSP only
recognizes web container.
– Parsing HTTP request, create instance like
HttpServletRequest、 HttpServletResponse、
HttpSession
19. Servlet
• Servlet life cycle
– void init()
• When servlet is first loaded, initialize servlet status
– void service()
• Serve a request. Can be called multiple times.
– void destroy()
• Dispose servlet.
20. Servlet
• Since the output of servlet is HTML, the usage
of servlets doesn’t constrain by browser.
• No matter how many requests, only one
servlet will be loaded into JVM.
• When there is a request, there is a thread, not
process.
• Servlets is persistent until be deystroyed.
24. Implement of Servlet
• javax.servlet
– The javax.servlet package contains a number of
classes and interfaces that describe and define the
contracts between a servlet class and the runtime
environment provided for an instance of such a
class by a conforming servlet container
25. Implement of Servlet
• javax.servlet.http
– The javax.servlet.http package contains a number
of classes and interfaces that describe and define
the contracts between a servlet class running
under the HTTP protocol and the runtime
environment provided for an instance of such a
class by a conforming servlet container.
28. Implement of Servlet
• service() can handle doGet() and doPost()
• Get
– The request parameter shows on URL
– Not proper for password
– Not too long data
– Good for setting as tags or bookmarks
– Don’t change the status of server
29. Implement of Servlet
• Post
– The request parameter is in Body
– Good for password
– Good for long data
– Not proper for tags or bookmarks
– May change content of database
30. Implement of Servlet
• HttpServletRequest
– The object of client sending request to server
– E.g. Form input data
• HttpServletResponse
– The object of server responding to client
– E.g. Show HTML doc on browser
31. Implement of Servlet
• HttpServletResponseObjectName.setContentType(“ContentType”)
• E.g. res.serContentTyoe(“text/html;charset=Big5”)
32. Implement of Servlet
• In order to show information on web page,
use HttpServletResponse object create a
PrintWriter object.
• And use PrintWriter to write HTML tags.
39. JSP
• When a JSP file is accessed, the container
converts it into a Java class that implements
the javax.servlet.jsp.HttpJspPage interface.
The various JSP building blocks are translated
into Java code and compiled into a Servlet.
40. JSP
• The element of JSP can be divided into three
kinds
– Directive
• Definite the static information of web page.
– Action
• Send data according to the request of client.
– Scripting
• Small piece of java code. Only execute if client request.
42. JSP
• Implicit object
• Corresponds to an object in servlet
• out
– corresponds to JspWriter, which associates
PrintWriter
• Request
– corresponds to HttpServletRequest
• Response
– corresponds to HttpServletResponse