我有一些法典。 因此,有可能获得许多例外。 我怀疑的是,为了处理所有这些例外,我不得不为每一种例外写上选区。 是不是有效的。 除使用关键词外, 如果还有其他解决办法,请建议我这样做。 任何答复都将受到赞赏。
预 收
我有一些法典。 因此,有可能获得许多例外。 我怀疑的是,为了处理所有这些例外,我不得不为每一种例外写上选区。 是不是有效的。 除使用关键词外, 如果还有其他解决办法,请建议我这样做。 任何答复都将受到赞赏。
预 收
这取决于你试图赶上哪类例外。 一切能够被扔进去的东西 可浏览,这样你就可以捕获
} catch (Throwable t) {
包括时间错误和所有错误。 正如Amjad提到的那样,你可以缩小这一差距。
} catch (Exception e) {
只是排出例外及其次类。
The problem with both of these is that they catch too much; you can work around that but you risk catching an important problem and then not handling it.
如果你有少数不同的例外,你可能最好放弃例外。
} catch (Exception1 e) { // do something
} catch (Exception2 e) { // do something else
如果是你自己的例外,你可以选择另一种选择:使你自己的例外等级分级。
class MyExceptions extends Exception { /* ... */ }
class MyExceptionSubtypeA extends MyException { /* ... */ }
class MyExceptionSubtypeASubsub1 extends MyExceptionSubtypeA { /* ... */ }
现在,你可以选择哪类班子。
} catch (MyExceptionSubtypeA sa) {
which will catch both MyExceptionSubtypeA
and MyExceptionSubtypeASubsub1
.
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