
202 Data Structure and Software Engineering: Challenges and Improvements
components as visual components in the same way as we use other compo-
nents such as pivot tables, DB tables, and Program tables. To create a new
component, we dene a class that extends WebComp class. We have only to
dene several methods to override those dened in the super WebComp class.
Table 1 shows some methods the super WebComp class provides. We dene
a component name, write code to create a visual component (a JComponent
object in Java), and specify how to change the component’s properties. For
the verication of relationships between components, we write the code ...