Bug 39244 modifiersChanged() hook not called in NewTypeWizardPage [code manipulation]
The modifiersChanged() hook in NewTypeWizardPage is not being called when a modifier radio-button is selected (public/default/private/protected), it is only being called if a check box is selected (abstract/final/static). I suspect a missing "else if" clause in typePageDialogFieldChanged() in NewTypeWizardPage is the culprit. As such am unable to extend NewTypeWizardPage and validate modifier settings (working on custom "class" wizard extension).
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewTypeWizardPage.java
String qualifiedName= fSuperClass != null ? JavaModelUtil.getFullyQualifiedName(fSuperClass) : typename; 
			buf.append(imports.addImport(qualifiedName));
		}
	}
	
	private void writeSuperInterfaces(StringBuffer buf, ImportsManager imports) {
		List interfaces= getSuperInterfaces();
		int last= interfaces.size() - 1;
		if (last >= 0) {
			if (fIsClass) {
				buf.append(" implements "); 
			} else {
				buf.append(" extends "); 
			}
			for (int i= 0; i <= last; i++) {
				String typename= (String) interfaces.get(i);
				buf.append(imports.addImport(typename));
				if (i < last) {
					buf.append(',');
				}
			}
		}
	}
	/*
	 * Called from createType to construct the source for this type
	 */		
	private String constructTypeStub(ImportsManager imports, String lineDelimiter) {	
		StringBuffer buf= new StringBuffer();