class Tmp { | |
Integer toInt(Number num) { | |
return null; | |
} | |
Stream<Number> test() { | |
Stream<Number> numberStream = null; | |
Stream<Number> integerStream1 = numberStream.map(this::toInt); | |
Stream<Number> integerStream2 = numberStream.map(num -> toInt(num)); | |
return numberStream.map(this::toInt); | |
} | |
} | |
interface Stream<T> { | |
<R> Stream<R> map(Function<? super T, ? extends R> mapper); | |
} | |
interface Function<I, R> { | |
R fun(I t); | |
} |