JSTL tag is a basic iteration tag. JavaServer Pages (JPSs) offer a number of ways to inject Java code into the Servlet code generated when a JSP is compiled. This service () method is auto-generated from the Servlet interface. Variables and methods declare in declaration tag are initialized at the time of JSP initialization. It means in that jsp we can use those variables any where and we can call those method any where. Declaration tag is one of the scripting elements in JSP. We know that at the end a JSP page is translated into Servlet class. JavaServer Pages™ (JSP™) v1.2 Syntax Reference Defines standard elements and namespace attributes of tag libraries. Declaration Tag starts with <%! Infineon Technologies offers a wide range of semiconductor solutions, microcontrollers, LED drivers, sensors and Automotive & Power Management ICs. Expression tag subpart of the âJSP Scripting elementsâ. 3. The general form JSP declaration tag is: <%! and ⦠JSP declaration tag is used to declare fields and methods. JavaTpoint offers college campus training on Core Java, Advance Java, .Net, Android, Hadoop, PHP, Web Technology and Python. Above code will be translated into following servlet : While, anything we add in scriptlet tag, goes inside the _jspservice() method, therefore we cannot add any function inside the scriptlet tag, as on compilation it will try to create a function getCount() inside the service method, and in Java, method inside a method is not allowed. Expression tag subpart of the “JSP Scripting elements”. JSP Comment Syntax: <%-- comment --%> This JSP comment tag tells the JSP container to ignore the comment part from compilation. You can declare static member, instance variable and methods inside Declaration Tag. ... HTML tags HTML tags. JavaServer Pages Standard Tag Library (JSTL) is a collection of useful JSP tags that provide the core functionality common to many JSP applications. The above JSP page becomes this Servlet : In the above servlet, we can see that variable count is declared outside the _jspservice() method. The special character '<%!' This Tag is used for declare the variables. It is mainly used to print the values of variable or method. %>) In the declaration tag, you can declare variables and methods. Answer: Server-side technologies range ⦠The JSP declaration tag is used to declare fields and methods. The general form JSP declaration tag is: <%! The code written inside the jsp declaration tag is placed outside the service() method of auto generated servlet. Declaration elements insert the enclosed code into the body of the servlet code allowing the declaration of variables or methods: Please let us know the company, where you were asked this question : Declaration Tags. JSTL. You must declare the variable or method before you use it in the JSP file. Along with this, Declaration Tag can also declare method and classes. So when we declare a variable or method in JSP inside Declaration Tag, it means the declaration is made inside the Servlet class but outside the service(or any other) method. A JSP declaration is used to declare variables and methods in a page’s scripting language.