What is ID in JSP?
The id attribute uniquely identifies the Action element and allows the action to be referenced inside the JSP page. If the Action creates an instance of an object, the id value can be used to reference it through the implicit object PageContext.
What does JSP page contain?
A JSP page is a text document that contains two types of text: static data, which can be expressed in any text-based format (such as HTML, SVG, WML, and XML), and JSP elements, which construct dynamic content.
How do you code a JSP page?
Creating a JSP Page
- Open Eclipse, Click on New → Dynamic Web Project.
- Give a name to your project and click on OK.
- You will see a new project created in Project Explorer.
- To create a new JSP file right click on Web Content directory, New → JSP file.
- Give a name to your JSP file and click Finish.
What are custom tags in JSP?
A custom tag is a user-defined JSP language element. When a JSP page containing a custom tag is translated into a servlet, the tag is converted to operations on a tag handler. The web container then invokes those operations when the JSP page’s servlet is executed.
What is isELIgnored in JSP?
The isELIgnored attribute gives you the ability to disable the evaluation of Expression Language (EL) expressions which has been introduced in JSP 2.0. If the attribute is set to false, then expressions are not evaluated but rather treated as static text.
How are the custom tags in JSP created?
Perform the following steps to create and use custom JSP tags:
- Write a tag handler class.
- Reference the tag library in your JSP source using the JSP directive.
- Write the tag library descriptor (TLD).
- Reference the TLD in the Web application deployment descriptor ( web.
- Use your custom tag in your JSP.
How can you create custom tags in JSP show with an example?
For creating any custom tag, we need to follow following steps:
- Create the Tag handler class and perform action at the start or at the end of the tag.
- Create the Tag Library Descriptor (TLD) file and define tags.
- Create the JSP file that uses the Custom tag defined in the TLD file.
How to put Java code in a JSP page?
A JSP page looks similar to an HTML page, but a JSP page also has Java code in it. We can put any regular Java Code in a JSP file using a scriplet tag which start with <% and ends with %>. JSP pages are used to develop dynamic responses.
What is the use of id attribute in JSP?
The id attribute uniquely identifies the Action element, and allows the action to be referenced inside the JSP page. If the Action creates an instance of an object, the id value can be used to reference it through the implicit object PageContext. This attribute identifies the lifecycle of the Action element.
What is the difference between JSP page and HTML page?
A JSP page looks similar to an HTML page, but a JSP page also has Java code in it. We can put any regular Java Code in a JSP file using a scriplet tag which start with <% and ends with %>. JSP pages are used to develop dynamic responses. To learn HTML, go to HTML Interactive Course and learn HTML while practicing it side by side.
How do I include a file in JSP?
The Action. This action lets you insert files into the page being generated. Unlike the include directive, which inserts the file at the time the JSP page is translated into a servlet, this action inserts the file at the time the page is requested.