java 异常 RuntimeException

如果某异常继承RuntimeException，则该异常可以不被声明，为什么呀

没那么多因为。https://github.com/wenka/JavaHighDevelopment/blob/master/src/com/wenka/exception/Throwable.txt看看

https://github.com/wenka/JavaHighDevelopment/blob/master/src/com/wenka/exception/Throwable.txt