受检例外、执行时期例外 如果您不在程序中处理的话,例如捋 EXCeption的" catch"区块拿掉 CheckedExceptionDemo. java: 9: unreported exception java. io IOException; must be caught or declared to be thrown受检例外、执行时期例外 • 如果您不在程序中处理的话，例如将 IOException的"catch"区块拿掉 CheckedExceptionDemo.java:9: unreported exception java.io.IOException; must be caught or declared to be thrown