Tutorialspoint examples . Tutorialspoint Examples explained every topic with appropriate example. Tutorialspoint Examples explained core java tutorial, servlet tutorial, jsp tutorial, struts tutorial, spring tutorial, jsf tutorial, hibernate tutorial, junit tutorial, javamail api tutorial, quartz schedular tutorial, jdbc tutorial, generics tutorial, sql tutorial, log. Step 1: Create a Web Application. In this step, you will create a simple 'hello world' web application: a project and a JSP. The tasks in this step are: Start Workshop. Simple JSP output : Basics « JSP « Java. Home; Java; 2D Graphics GUI; 3D. Related examples in the same category. JSP Passing Parameters: 2. This is a simple JSP program to connect to MSSQL database. This example JSP program shows how to connect to a MSSQL database from your JSP program. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, and XML. Text tutorial, ant tutorial, jsoup tutorial, jaxb tutorial, json tutorial, javascript tutorial, xml parser tutorial, json tutorial, jar tutorial, war tutorial, oracle plsql tutorial, angularjs tutorial and more. Learn sample programs examples with output and source code for beginners in eclipse with explanation. Tutorials. Point Examples (javawithease) is a place for easy, simple and step by step learning of java and other software development technologies. We are committed to provide better solutions for online education. Find all tutorials with working examples. We will provide more and more tutorials on various software development technologies. Learn core java tutorials for beginners with examples in eclipse online. We are providing core java tutorials step by step in eclipse for Basics, OOPs, Methods, Overloading, Overriding, Inheritance, Polymorphism, Interfaces, Packages, Abstract classes, String handling, Exception handling, IO, Collections, Multithreading, Serialization and more. Learn core java sample programs examples with output and source code for beginners in eclipse with explanation. We are providing servlet tutorials step by step in eclipse for Basics, Life Cycle, Servlet Examples, Client Request, Server Response, Deployment Descriptor, Request Dispatcher, Http Codes, Servlet Filters, Cookies, Sessions and more. JavaServer Pages (JSPs) technology is an extension of Java servlet technology and combines HTML and Java code into a single file. 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It allows you to mix static HTML with dynamically generated HTML - in the way that the business logic and the presentation are well separated. The advantages of JSP are: Separation of static and dynamic contents: JSP enables the separation of static contents from dynamic contents. This greatly simplifies the creation and maintenance of web contents. Reuse of components and tag libraries: The dynamic contents can be provided by reusable components such as Java. Bean, Enterprise Java. Bean (EJB) and tag libraries - you do not have to re- inventing the wheels. Java's power and portability. JSPs are Internally Compiled into Java Servlets. That is to say, anything that can be done using JSPs can also be accomplished using Java servlets. However, it is important to note that servlets and JSPs are complementary technologies, NOT replacement of each other. Servlet can be viewed as . JSP, on the other hand, is . In a typical Model- View- Control (MVC) application, servlets are often used for the Controller (C), which involves complex programming logic. JSPs are often used for the View (V), which mainly deals with presentation. The Model (M) is usually implemented using Java. Bean or EJB. Apache Tomcat Server. JSPs, like servlets, are server- side programs run inside a HTTP server. To support JSP/servlet, a Java- capable HTTP server is required. Tomcat Server (@ http: //tomcat. RI) for Java servlet and JSP, provided free by Apache (@ http: //www. First JSP Example - . We shall use the webapp called . It should be either of the followings depending on the random number generated. The Java statements are enclosed by < % .. This is used in the anchor tag < a> for refreshing the page to obtain another random number. Behind the Scene. When a JSP is first accessed, Tomcat converts the JSP into a servlet; compile the servlet, and execute the servlet. Check out the generated servlet for . Hence, the expression will be evaluated, and the result of the evaluation written out as part of the response message. Compare the JSP script and the internally generated servlet, you shall understand that servlet is . The service() methods takes two arguments: request and response, corresponding to the HTTP request and response messages respectively. A Print. Writer called out is created for writing out the response to the network. You have to hardcode all the HTML tags (and cannot use any WYSIWYG web authoring tools). Any change to the web page's presentation (such as background color and font size) requires re- coding and re- compilation of servlet program. Servlet, in a nutshell, is . Once the client fills in the form (by checking the boxes) and submits the form, . The values are echoed back using an unordered list. JSP Scripting Elements. JSP provides the following scripting elements: JSP Comment < %- - comments - -> JSP Expression < %= Java Expression %> JSP Scriptlet < % Java Statement(s) %> JSP Directive < %@ page. For example. < %- - anything but a closing tag here will be ignored - -> Note that HTML comment is < !- - comments - ->. JSP expression within the HTML comment will be evaluated. For example. < !- - HTML comments here < %= Math. JSP Expression < %= Java Expression %> JSP Expression can be used to insert a single Java expression directly into the response message. This expression will be placed inside a out. Hence, the expression will be evaluated and printed out as part of the response message. For examples. < p> The square root of 5 is < %= Math. For examples. < p> You have choose author < %= request. Parameter(. JSP scriptlets let you insert an arbitrary sequence of valid Java statement(s) into the service() method of the converted servlet. All the Java statements in a scriptlet are to be terminated with a semi- colon. For example: < %. String author = request. Parameter(. The HTML codes are passed to an out. JSP Directive < %@ page. The syntax of the JSP directive is. For examples. < %@ page import=. You can include any JSP files, or static HTML files. You can use include directive to include navigation bar, copyright statement, logo, etc. The syntax is. < %@ include file=. The processing script is contained in the same page. The method request. Parameter(. The steps are. Establish a database connection via a java. Connection object; Allocate a java. Statement object under the Connection; Prepare a SQL SELECT string; Execute the SQL SELECT using execute. Query() method. The result of query is returned in an object of java. Result. Set; Process the Result. Set row by row via Result. Set. next(); Free resources and close the Connection. The query result is tabulated in a HTML table. Note the mixing of HTML and Java in producing the table. Notice that JSP carries out the presentation much better and neater than servlet. The presentation can be changed easily with JSP. The JSP pages can be created and modified using a WYSIWYG web authoring tool and reload to see the effect on the presentation. Prentice Hall. Java Database Connectivity (JDBC) @ http: //java.
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