The compiler can perfectly well figure out which types of exception t could hold and prove that Listing 1 will not violate the contract of foo - without making the programmer jump through hoops.
编译器可以非常清楚地找出哪种类型的异常t可以保留并证实清单1不会违反foo的合同—而无需程序员赴汤蹈火。
But the exception parameter t is declared as a Throwable, and Throwable cannot be thrown from foo unless the throws clause is modified.
但是异常参数t被声明为Throwable，且如果没有修改throws子句，则Throwable不能从foo中抛出。
Because t: : PublicAccess has no control over its environment, it does not use an assertion, but instead throws an exception to preach to its callers about the errors of their ways.
因为T：PublicAccess无法控制其所处的环境，所以它并不使用断言，而是抛出一个异常给它的调用者，而这些调用者处理这个异常的方式也各有千秋。
Just about every make and model, with the notable exception of Apple's (AAPL) iPhone (a strange omission because Amazon carries both AT&T (T) smartphones and Apple iPods) can be purchased from Amazon.
几乎每一种款式和型号都可以在亚马逊上买到，虽然众所周知它没有苹果（AAPL）的iPhone（iPhone 的缺失很是奇怪，因为亚马逊既卖AT&T（T）的智能手机，也卖苹果的iPod）。
FileVisitResult preVisitDirectoryFailed(T dir, IOException exception) is called when a directory could not be visited for some reason.
当目录由于某些原因无法访问时，调用FileVisitResultpreVisitDirectoryFailed(Tdir,IOExceptionexception)。
FileVisitResult preVisitDirectoryFailed(T dir, IOException exception) is called when a directory could not be visited for some reason.
当目录由于某些原因无法访问时，调用FileVisitResultpreVisitDirectoryFailed(Tdir,IOExceptionexception)。
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