java.lang.reflect.WildcardType.getLowerBounds()
[211 byte] By [jasonxa] at [2007-11-26 14:53:33] 
Why does java.lang.reflect.WildcardType.getLowerBounds() and java.lang.reflect.WildcardType.getLowerUpperBounds() return an array? When would a wild card have more that one upper bound or one lower bound?
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# 1
<T extends A & B><T super A & B>ejpa at 2007-7-8 8:41:54 >
# 2
Thank you, I was not aware of that syntax.jasonxa at 2007-7-8 8:41:54 >
# 3
>> <T extends A & B>
this declares a type variable, not a wildcard type.
Wheras a type variable may have multiple upper bounds, a wildcard type may not.
>> <T super A & B>
sorry, this is no valid syntax. A type variable may not have lower bounds at all.
Only wildcard types may have at most one lower bound.
I think the OP's question is a valid one: why does the reflection API offer access to multiple bounds for wildcards if those are not supported by the Java Language Spec?
Amazing that this hasn't come up earlier - or has it?
McNeppa at 2007-7-8 8:41:54 >
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