What is setAttribute in JSP?
setAttribute(String, object) – This method is used to save an object in session by assigning a unique string to the object. Later, the object can be accessed from the session by using the same String till the session is active.
What is the difference between request setAttribute and session setAttribute?
Request attribute is only available in the request object lifetime. filters, servlet, jsp, include, forward uses same request object. Once the request is completed, request object is destroyed. Whereas session attributes are available till the session ends or till the browser is closed.
What is the use of setAttribute in Java?
The setAttribute() method of a SimpleScriptContext class is used to set the value of an attribute in a given scope where the name of the attribute, the value of attribute and scope of the attribute is passed as parameters.
What is the role of JspContext?
JspContext serves as the base class for the PageContext class and abstracts all information that is not specific to servlets. This allows for Simple Tag Extensions to be used outside of the context of a request/response Servlet.
What are the valid scopes in JSP?
Object scope in JSP is segregated into four parts and they are page, request, session and application.
What is the use of request setAttribute in servlet?
javax.servlet Interface ServletRequest
| Method Summary | |
|---|---|
| void | removeAttribute(java.lang.String name) Removes an attribute from this request. |
| void | setAttribute(java.lang.String name, java.lang.Object o) Stores an attribute in this request. |
What is setAttribute and getAttribute in Servlet?
The servlet setAttribute and getAttribute methods are used to pass information from one servlet to another (or to JSP). It is just like passing object from one class to another so that we can reuse the same object again and again.
What is context in JSP?
PageContext extends JspContext to provide useful context information for when JSP technology is used in a Servlet environment. A PageContext instance provides access to all the namespaces associated with a JSP page, provides access to several page attributes, as well as a layer above the implementation details.
Which of the following is not a scope of JSP?
24. E Global is not a valid scope for java bean in Jsp.
Which is not a directive in JSP?
Explanation: command directive is not a directive in JSP.
What are attribute scopes?
The scope attribute specifies whether a header cell is a header for a column, row, or group of columns or rows. The scope attribute has no visual effect in ordinary web browsers, but can be used by screen readers.
Which of the following are valid scopes in JSP?
| Q. | Which of the following are the valid scopes in JSP? |
|---|---|
| A. | request, page, session, application |
| B. | request, page, session, global |
| C. | response, page, session, application |
| D. | request, page, context, application |
Is it possible to use request setattribute on a JSP page?
Is it possible to use request.setAttribute on a JSP page and then on HTML Submit get the same request attribute in the Servlet? Show activity on this post. No. Unfortunately the Request object is only available until the page finishes loading – once it’s complete, you’ll lose all values in it unless they’ve been stored somewhere.
How do I manage the request scope of a servlet?
Request Scope begins whenever the request object is created by the servlet container and the request scope ends whenever the request object is deleted by the servlet container. As the request object is stored in the pageContext object we can manage request scope attributes by using the pageContext object.
What is the use of setattribute?
The setAttribute () method is used to set or add an attribute to a particular element and provides a value to it. If the attribute already exists, it only set or changes the value of the attribute.
What is setattribute in servlet in Java?
Attributes in Servlets | Java. An attribute in servlet is an object that can be set, get or removed by the following aspects. To pass the value from servlet to html/jsp files, setAttribute () method is called by the request object. setAttribute () method takes an input as an object which sends the data from servlet to the requesting website.