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Answer by biziclop for Choosing between overloaded methods if actual...
Although @thecoop's answer is correct, there is another aspect of the lambda mechanism worth mentioning. Lambdas with block bodies fall into two categories: void-compatible and value-compatible. The...
View ArticleAnswer by thecoop for Choosing between overloaded methods if actual parameter...
I believe this is because Callable declares a return type, and Runnable does not. From the JLS section 15.12.2.5, the overload with the most specific type is chosen, if there is one unambiguously most...
View ArticleChoosing between overloaded methods if actual parameter is a lambda
In Java 1.8, the following lambda expression complies with both Runnable and Callable functional interfaces: () -> { throw new RuntimeException("FIXME"); } Still, if I submit it to an...
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