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Showing posts from November, 2013

How to connect pgAdmin to heroku postgresql

1.first of all you need to go to https://postgres.heroku.com/databases and click on the database you want to connect with. 2.And copy the host, database, name ,user,port,password . 3.Now open pgAdminIII client and click on add connection to servers button and paste the credential copied from the heroku ;  maintenance DB referrers to database name. 4. Then in the "Advanced" tab you must enter the maintenance DB name(Database name) surrounded with a single quotes.   eg: 'dbname' 5.After that click on "ok" button done....!!!! for further reference go to following links : Connect to a heroku database with pgadmin heroku postgresql How to hide databases that i am not allowed to access
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JSP page directives

A jsp page directive looks like this: <%@ directive attribute="value" %> I am not gonna explain each and every page directives here . I would like to discuss about two page directives  which is import and include. First of all consider the import directive . The following simple program illustrate the use of import page directive: The output would be something looks like this: <%@ page language="java" contentType="text/html; charset=UTF-8"     pageEncoding="UTF-8"%>  <%@ page import="java.util.Date" %>   //page directive <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Jsp Basics</title> </head> <body> <%=new Date() %> </body> </html> Tue Nov 12 17:42:34 I
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JSP Basic syntax -Declarations Scriptlets

In this post I would like to explain basic syntax of JSP Lets start with the Scriptlet Following is the syntax of scriptlet: <% code goes here…..%> On other hand code rendered inside <% %> these tags considered as jsp code; and compiled as JSP code We have XML equivalent of the above syntax ;it would be looks something like this: Code goes here…… Now let’s write a simple jsp file: <% int i=2; int k=3; int j=k+i; out.println("sum of i and j is:"+j); %> The output would be something like this: Sum of I and j is:5  Nothing special in it; now consider the xml syntax we can run the above code like this: int i=2; int k=3; int j=k+i; out.println("sum of i and j is:"+j); In jsp there is a shortcut for out.println() method .consider the following example <% int i=2; int k=3; int j=k+i; %> Sum of I an j is:<%=k%> Ie <%= variable %> this way we can print a variable inside a jsp file. When compared to out.p
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