letsaniagarwal-blog

[letsaniagarwal-blog]

PDFBox is an open-source library which is written in Java. It supports the development and conversion of PDF Documents. PDFBox Library comes as a JAR file. It allows the creation of new PDF documents, manipulation of existing documents, bookmarking PDF and the ability to extract content from PDF documents.

[letsaniagarwal-blog]

PDFBox is an open-source library which is written in Java. It supports the development and conversion of PDF Documents.

[letsaniagarwal-blog]

A queue can be defined as an ordered list which enables insert operations to be performed at one end called REAR and delete operations to be performed at another end called FRONT.

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An introduction to Stack Data Structure

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For receiving or sending the email using JavaMail API, you need to load the two jar files:

mail.jar

activation.jar

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We can send email by using the SMTP server of gmail. Learn how to send email through gmail server by SSL (Secured Socket Layer). SSL is basically used for security if you are sending email through gmail server.

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Since the early ages, mankind has tried to develop computing devices to carry out the calculations that were otherwise cumbersome to perform. Starting from the use primitive tools like sticks and stones for the purpose of counting to the development of electronic pathways called circuits which allowed the birth of a generation of computers, mankind has moved from slow, inefficient and huge devices to the compact, fast and reliable computers that we have today.

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A brief introduction of Java Server Pages

The JSP innovation is an open, freely available technology that was released in 1999 by Sun Microsystems. JSP is utilized to make dynamic web pages, these pages require less maintenance than a servlet. JSP is like PHP and ASP, however it utilizes the Java programming language. JSP includes Java code inside HTML utilizing JSP tags rather than servlet which includes HTML code inside java code. JSP can do everything that a servlet does.

 Compositionally, JSP may be seen as a high-level abstraction of Java servlets. JSPs are converted into servlets at runtime, in this way JSP is a Servlet; each JSP servlet is stored and re-utilized until the first JSP is changed.

 JSP can be utilized freely or as the view component of a server-side model– view– controller plan, regularly with JavaBeans as the model and Java servlets (or a framework, for example, Apache Struts) as the controller. This is a kind of Model architecture.

 Some of the main features of JSP are as follows:

 •Easier to read data from the user: User interacting with JSP controls like textbox, button, dropdown list, checkbox can enter some data. Utilizing JSP it is simpler to peruse this data entered by the user and send it to the server

 •Easier to show server response: After the information is sent to the server, its reaction is sent back to the client and it is effectively shown. For instance, after a client presents a frame, a reaction from the server is shown utilizing JSP, for example, - "Thanks for filling the form".

 •Allows to add Java to your site: One of the primary component of JSP is to allow Java code to be included between your HTML so as to give the power of java to our webpage and additionally make it more interactive and powerful. JSP page is internally changed over to a bytecode java document, consequently all the Java functionalities like security, adaptability, platform independent are available to JSP as well.

 •Easier to associate with database: One of the most essential component of JSP is to effectively enable us connect our website with the database, so we can send the information entered by every user to a database and read it again from database when required.

 •Tracking User: JSP enables us to track the choices made by the user during his/her interaction with the site by keeping up the data in the Session object, Application question or in Cookies i.e.storing user data on the user’s system. This can be useful when you have to track one or different users or the selections made during the present interaction with the site.

 •Easy to code: JSP is for the most part about adding Java to your site page's HTML and it is genuinely simple to learn and code. Anybody with some working knowledge of java can learn JSP with ease in a short time period.

 •JSP is a piece of the J2EE standard. This implies you can send JSPs on a range of platforms, including WebLogic Server. Furthermore, third party vendors and application designers can give JavaBean components and characterize custom JSP tabs that can be referenced from a JSP page to give dynamic content.

 Advantages of JSP:

 •JSP gives a simpler method to code dynamic webpages.

 •JSP does not require additional files like, java class files, web.xml so forth

 •Any change in the JSP code is dealt with by Web Container (Application server like tomcat), and doesn't require re-compilation.

 •JSP pages can be directly accessed, and web.xml mapping isn't required like in servlets.

 •High Performance and Scalability.

 Refrences:

https://www.javatpoint.com/

https://en.wikipedia.org/wiki/JavaServer_Pages

https://www.studytonight.com/jsp/

[letsaniagarwal-blog]

Apache POI Installation

To install POI, download a bundle of Jar files from official site poi.apache.org/download.html and use in the application. Following are the minimum required Jars.

poi-3.17.jar

poi-ooxml-3.17.jar

commons-codec-1.10.jar

poi-ooxml-schemas-3.17.jar

xml-apis-1.0.b2.jar

stax-api-1.0.1.jar

xmlbeans-2.6.0.jar

dom4j-1.6.1.jar

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Kotlin Tutorial

Learn Kotlin tutorial for beginners and professionals. Kotlin is a statically typed programming language for modern multi-platform applications. 100% inter-operable with Java and Android. It provides a simpler syntax and fewer lines of code.