Bug 82231 [build path] Hard to find type restriction compiler problem preferences
I20050104-1600 There compiler preference page contains a Warning/Error node with many sub-entries . I tried to find where I could change the 'warning' for the access of internal types to 'error'. No luck until I realized that the Build node also contains Warning/Error settings.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/LibrariesWorkbookPage.java
updateClasspathList();
		}
	}	
		
	private void updateClasspathList() {
		List projelements= fLibrariesList.getElements();
		
		List cpelements= fClassPathList.getElements();
		int nEntries= cpelements.size();
		
		int lastRemovePos= nEntries;
		for (int i= nEntries - 1; i >= 0; i--) {
			CPListElement cpe= (CPListElement)cpelements.get(i);
			int kind= cpe.getEntryKind();
			if (isEntryKind(kind)) {
				if (!projelements.remove(cpe)) {
					cpelements.remove(i);
					lastRemovePos= i;
				}	
			}
		}
		
		cpelements.addAll(lastRemovePos, projelements);
		if (lastRemovePos != nEntries || !projelements.isEmpty()) {
			fClassPathList.setElements(cpelements);
		}
	}