Why own scripting language and not Java?
The simplest reason is that WidSets would not be possible with Java. Mobile information device profile (MIPD) does not support dynamic classloading. As a result, you cannot load new Java classes to a running MIDP application; everything has to be inside the JAR. Compiled WidSets Scripting Language (WSL) code also packs down to smaller bytecode size compared to Java bytecode (even obfuscated), so it creates less traffic when transferred to mobile phone, and also consumes less space when stored in the phone memory. A native language such as Symbian would be faster and would provide better support for graphics, but would have less compatible phones. WidSets itself is written in Java.
