Several are supplied, and you can add your own. However, syntax checking is done when the code is parsed during saves or compiles. Most of Parts for Java's competitors require a great deal more Java programming proficiency. Reusable components are one of the primary benefits promised by the object-oriented revolution. Parts for Java from ParcPlace-Digitalk delivers on this promise through the parts catalog.
Reusable components are the first step toward a component, assembler-friendly development tool.
Although the current release shows a number of deficiencies, it's likely that most of these will be addressed in near-future product updates. The parts system for connecting application elements of the developed applications is innovative. A useful class and source code inspection tool is included. No printed documentation or Java reference is included. No database support is offered yet.