Java Problem Blog

So I want to delete some data. The models have a number of items so
rather than paging through them all 20 at a time to delete.

But you can select and delete 200 recodes at time , This is the tip.

1. Go to appengine Data browser and select your need Kind
2. Click Next 20 Link
3. See your current url , it should seems to be like this pattern “query=SELECT * FROM Counter&limit=20&offset=20″
4. Just change the limit=20 to limit=200
5. The you can select and delete 200 records at ones.

Free Web Directory Launched,

I have created free  Web Directory run on appengin. It is still in beta release but you can submit your link to the directory.

see how it working http://web-directory.appspot.com/

If interesting to run your own directory on appengin please put comments, I can give the support with small cost:) .

Google App Engine supports apps written in several programming languages. With App Engine’s Java runtime environment, you can build your app using standard Java technologies, including the JVM, Java servlets, and the Java programming language—or any other language using a JVM-based interpreter or compiler, such as JavaScript or Ruby. App Engine also features a dedicated Python runtime environment, which includes a fast Python interpreter and the Python standard library. The Java and Python runtime environments are built to ensure that your application runs quickly, securely, and without interference from other apps on the system.

I have tried Google app engine and write simple programs.

Java application run on app engine  - http://chat-rooms.appspot.com/

Python application run on app engine - http://freehitcounter.appspot.com/

Try Your own application and host with google app (Free for limited use).

Welcome To Java World, I Just Start to blog from blog.co.cc to share my Java experiences when I working day today projects. Keep In taught.