About Question enthuware.ocpjp.v11.2.3081 :

[Antonicaalex]

What s the difference between

Code: Select all

DoubleStream.generate(Random::nextDouble).limit(10).forEach(System.out::print);
[size=85]nextDouble() is an instance method of Random. So, Random::nextDouble is incorrect here.[/size]

And the

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 slist.forEach(Student::debug);

The debug method is instance method as well

[admin]

There is no instance of Random available in the context on which nextDouble can be invoked.

But inside foreach, there is an instance of Student available on which debug can be invoked.