Bug 49353 Javadoc preference does not indicate bad exe until field is edited. [javadoc]
I upgarded from Sun Java 1.4.2_02 to 1.4.2_03. When I open the Javadoc preference page, the entry fields shows "C:\Java\sun\1.4.2_02\bin\javadoc.exe", which no longer exists but the error icon and message is NOT displayed at the top of the pane. If I edit the field but leave the entry still bogus, THEN the error icon and message appear. I think the error should appear as soon as the pane is displayed. Version 3.0.m6.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javadocexport/JavadocTreeWizardPage.java
res.add(unit);
					}
				}
			}
			Set addedPackages= new HashSet();
			checkedElements= allChecked.iterator();
			while (checkedElements.hasNext()) {
				Object element= checkedElements.next();
				if (element instanceof IPackageFragment) {
					IPackageFragment fragment= (IPackageFragment) element;
					String name= fragment.getElementName();
					if (!incompletePackages.contains(name) && !addedPackages.contains(name)) {
						res.add(fragment);
						addedPackages.add(name);
					}
				}
			}
		} catch (JavaModelException e) {
			JavaPlugin.log(e);
		}
		return (IJavaElement[]) res.toArray(new IJavaElement[res.size()]);
	}
	protected void updateStore(IJavaProject[] checkedProjects) {
		if (fCustomButton.getSelection()) {
			fStore.setDocletName(fDocletTypeText.getText());
			fStore.setDocletPath(fDocletText.getText());
			fStore.setFromStandard(false);
		}
		if (fStandardButton.getSelection()) {
			fStore.setFromStandard(true);