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What is a response object in JSP?
517 Lectures 57 hours
The response object is an instance of a javax.servlet.http.HttpServletResponse object. Just as the server creates the request object, it also creates an object to represent the response to the client.
The response object also defines the interfaces that deal with creating new HTTP headers. Through this object, the JSP programmer can add new cookies or date stamps, HTTP status codes etc.
The response object methods can be used to set HTTP response header in your servlet program. This object represents the server response.
Following example would use setIntHeader() method to set Refresh header to simulate a digital clock −
<%@ page import = "java.io.*,java.util.*" %> <html> <head> <title>Auto Refresh Header Example</title> </head> <body> <center> <h2>Auto Refresh Header Example</h2> <% // Set refresh, autoload time as 5 seconds response.setIntHeader("Refresh", 5); // Get current time Calendar calendar = new GregorianCalendar(); String am_pm; int hour = calendar.get(Calendar.HOUR); int minute = calendar.get(Calendar.MINUTE); int second = calendar.get(Calendar.SECOND); if(calendar.get(Calendar.AM_PM) == 0) am_pm = "AM"; else am_pm = "PM"; String CT = hour+":"+ minute +":"+ second +" "+ am_pm; out.println("Current Time is: " + CT + "
"); %> </center> </body> </html>
Auto Refresh Header Example
Current Time is: 9:44:50 PM
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- What is the use of page object in JSP? Need an example.