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/BuildPathsBlock.java
public void run() {
					if (fSWTWidget == null || fSWTWidget.isDisposed()) {
						return;
					}
					doUpdateUI();
				}
			});
		}
	}
	protected void doUpdateUI() {
		fBuildPathDialogField.refresh();
		fClassPathList.refresh();
	
		if (fSourceContainerPage != null) {
			fSourceContainerPage.init(fCurrJProject);
			fProjectsPage.init(fCurrJProject);
			fLibrariesPage.init(fCurrJProject);
		}
		doStatusLineUpdate();
	}
	
	private String getEncodedSettings() {
		StringBuffer buf= new StringBuffer();	
		CPListElement.appendEncodePath(fOutputLocationPath, buf).append(';');
		int nElements= fClassPathList.getSize();
		buf.append('[').append(nElements).append(']');
		for (int i= 0; i < nElements; i++) {
			CPListElement elem= (CPListElement) fClassPathList.getElement(i);
			elem.appendEncodedSettings(buf);
		}