Hi, everybody
I have developed a three-tier web application using Java applet, Java
Servlet, and Oracle, and I am experiencing some problems which I do not
know how to solve at this time. I hope you can help me.
In this application, my Java applet communicates with the Java Servlet
applications on a web server, and the Servlets communicate with a very
big Oracle database.
In my applet, I have a scrollpan in a frame. The scrollpan will show
many text fields with data filled in them, using GridbagLayout. When
the vertical scrollbar is clicked, the text boxes(fields) along with
the data can be scolled up or down. I found two problems with it:
1. The number of the text boxes depends on the amount of the data that
are retrieved from the database. The more data I get, the more text
fields I have and the longer it takes to show up on the user's browser.
2. When the text fields move up or down, the appearance of the
movements look like the wave in the sea. It is a kind of annoying.
In order to improve the efficiency and make the GUI more user-friendly,
I try to do the following: I want to have a fixed number of text
boxes(fields) at fixed position on the scrollpan. When the vertical
scrollbar is clicked, only the data inside the text fields will move up
or down and the text boxes will remain in their orginal positions.
I am not sure if I can do the above just using Java awt. Or, maybe I
should use other software or language to implement this application?
I would appreciate any suggestions you have to solve my problems.
Thank you
Lei Li
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