常见的Runtime Exception(运行时异常)
ArithmeticException, ArrayStoreException, BufferOverflowException, BufferUnderflowException,
CannotRedoException, CannotUndoException, ClassCastException, CMMException, ConcurrentModificationException,
DOMException, EmptyStackException, IllegalArgumentException, IllegalMonitorStateException, IllegalPathStateException,
IllegalStateException,ImagingOpException,IndexOutOfBoundsException,MissingResourceException,NegativeArraySizeException
NoSuchElementException,NullPointerException,ProfileDataException,ProviderException,RasterFormatException,SecurityException,SystemException, UndeclaredThrowableException, UnmodifiableSetException, UnsupportedOperationException
一般异常: IOException，FileNotFoundException，SqlException