Why doesn't Java allow generic subclasses of Throwable? - Stack Overflow As mark said, the types are...

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Why doesn't Java allow generic subclasses of Throwable? - Stack Overflow



As mark said, the types are not reifiable, which is a problem in the following case:

try {

doSomeStuff();

} catch (SomeException<Integer> e) {

// ignore that

} catch (SomeException<String> e) {

crashAndBurn()

}

Both SomeException<Integer> and SomeException<String> are erased to the same type, there is no way for the JVM to distinguish the exception instances, and therefore no way to tell which catch block should be executed.

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Why doesn't Java allow generic subclasses of Throwable? - Stack Overflow

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