• Calendar
• ClassLoader
• ClassNotFoundException
• Collator
• Format
• GregorianCalendar
• IDN
• IllegalAccessException
• InvocationTargetException
• MalformedURLException
• Normalizer
• Normalizer.Form
• NoSuchMethodException
• OutOfMemoryError
• ReflectiveOperationException
• SecureRandom
• SocketException
• ThreadLocalRandom
• UndeclaredThrowableException
• UnknownHostException
• UnknownServiceException
• URI
• URISyntaxException
• URL
• URLClassLoader
• URLConnection
• VirtualMachineError
• WeakHashMap