Client UI design-time error in 9.0.2.829

Question

I'm getting errors in the UI Editor's log window while designing an application. It has occurred in two distinct situations so far:
1. After placing a JScrollPane in a container, set the horizontalScrollBarPolicy property to HORIZONTAL_SCROLLBAR_NEVER. Log window reports "Field HORIZONTAL_SCROLLBAR_NEVER not found in class javax.swing.JScrollPane". (Message may appear only after forcing UI to redraw, for example by viewing source and then back to UI design view.)
2. After placing a JTabbedPane in a container, set the tabPlacement property to BOTTOM. Log window reports "Field BOTTOM not found in class javax.swing.JTabbedPane". Properties window also does not show new BOTTOM setting.
Code compiles fine, but UI Design window doesn't want to display components that it thinks has errors.

Answer 1

This is a known bug that is being looked at in 9.0.3. The problem is that constants defined in interfaces implemented by a class (in this case JScrollPane) are not being recognized by the UIEditor. A possible workaround would be to define a constant in your class (e.g. Frame1) that is initialized to the real constant (e.g. int HORIZONTAL_SCROLLBAR_NEVER = JScrollPane.HORIZONTAL_SCROLLBAR_NEVER) though it might result in the same problem. Sorry I can't test this, I'm out of the office for the week and will not have access to JDeveloper during that time.