The difference between method reference and method call in java

Method reference:

The method reference returns the implementation of the interface.

private static  Iterable itToIterable(Stream stream) { return stream::iterator; //编译通过此处返回的是Iterable }

Method call:

Method call returns the return value of the method.

private static  Iterable itToIterablePro(Stream stream) { return stream.iterator(); //编译失败此处返回的是iterator }

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