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/preferences/JavaBuildConfigurationBlock.java
String message;
		if (workspaceSettings) {
			message= PreferencesMessages.JavaBuildConfigurationBlock_needsfullbuild_message; 
		} else {
			message= PreferencesMessages.JavaBuildConfigurationBlock_needsprojectbuild_message; 
		}
		return new String[] { title, message };
	}
	private IStatus validateMaxNumberProblems() {
		String number= getValue(PREF_PB_MAX_PER_UNIT);
		StatusInfo status= new StatusInfo();
		if (number.length() == 0) {
			status.setError(PreferencesMessages.JavaBuildConfigurationBlock_empty_input); 
		} else {
			try {
				int value= Integer.parseInt(number);
				if (value <= 0) {
					status.setError(Messages.format(PreferencesMessages.JavaBuildConfigurationBlock_invalid_input, number)); 
				}
			} catch (NumberFormatException e) {
				status.setError(Messages.format(PreferencesMessages.JavaBuildConfigurationBlock_invalid_input, number)); 
			}
		}
		return status;
	}
	private IStatus validateResourceFilters() {
		String text= getValue(PREF_RESOURCE_FILTER);
		
		IWorkspace workspace= ResourcesPlugin.getWorkspace();