Passing data between a JSP page and servlet using JSON and JQuery (part 1)

JavaScript Object Notation, or JSON for short, is a human-readable and compact way to exchange data between systems.  JSON has been referred to as a fat-free alternative to XML.

There are lots of websites that explain the pros and cons to using XML vs. JSON so I won’t go into that here.  Rather, I’ll give a brief but complete example of how to

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Using InfoReport to learn about Windchill objects

PTC includes a useful shell script in the Windchill/bin folder named InfoReport.sh (Unix) or InfoReport.bat (Windows) that can be used to learn about the internal fields and methods of various Windchill objects.

The script uses introspection to interrogate a Java class and create a text file report containing

Using JavaScript and JQuery to dynamically change options in a select element

This is an example of dynamically changing the available options in a select element (drop-down list) using JavaScript and jQuery.

In this example we want to change which suppliers can be selected if the type of export is DRW.  If any type of export is chosen other than DRW, then one set of suppliers will be

How to get URL parameters using JavaScript

Here’s a simple JavaScript function that will return URL parameter values.

Basic setup to use jQuery in a JSP page

Before you can use jQuery in your page you’ll need to add some basics in the page header like so:

Welcome!

Welcome to Chilled Java!  This is a brand new site so there’s not much to look at yet, but stay tuned for some good stuff coming soon.