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How to access java-classes in the default-package?
..., some post-processing is needed to move the file into a dedicated package and add this "package" directive at its beginning.
Update 2014: bug 6975015, for JDK7 and JDK8, describe an even stricter prohibition against import from unnamed package.
The TypeName must be the canonical name of a class t...
Detecting Unsaved Changes
...pt in an ASP .Net application. If a user modifies controls on a web form, and attempts to navigate away before saving, a prompt should appear warning them that they have unsaved changes, and give them the option to cancel and stay on the current page. The prompt should not display if the user hasn...
How to add a progress bar to a shell script?
When scripting in bash or any other shell in *NIX, while running a command that will take more than a few seconds, a progress bar is needed.
...
Hiding textarea resize handle in Safari
I'm using textarea components in my application, and I control their height dynamically. As the user types, the height is increased whenever there is enough text. This works fine on IE, Firefox, and Safari.
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Difference between database and schema
What's the difference between a Database and a Schema in SQL Server? Both are the containers of tables and data.
5 Answers
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How to DROP multiple columns with a single ALTER TABLE statement in SQL Server?
I would like to write a single SQL command to drop multiple columns from a single table in one ALTER TABLE statement.
11 ...
Sleep Command in T-SQL?
Is there to way write a T-SQL command to just make it sleep for a period of time? I am writing a web service asynchronously and I want to be able to run some tests to see if the asynchronous pattern is really going to make it more scalable. In order to "mock" an external service that is slow, I wa...
postgresql return 0 if returned value is null
...price DESC ) FROM web_price_scan
WHERE listing_Type = 'AARM'
AND u_kbalikepartnumbers_id = 1000307
AND ( EXTRACT( DAY FROM ( NOW() - dateEnded ) ) ) * 24 < 48
AND COALESCE( price, 0 ) > ( SELECT AVG( COALESCE( price, 0 ) )* 0.50
...
How to version control a record in a database
Let's say that I have a record in the database and that both admin and normal users can do updates.
11 Answers
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What does java:comp/env/ do?
...epartments. For example, future
policies might allow you to name users
and organizations/departments by using
names such as "java:user/alice" and
"java:org/engineering".
In the "comp" context, there are two
bindings: "env" and "UserTransaction".
The name "env" is bound to a subtree
...