How to find the max element from an array list of objects?

Question

Collections.max(arraylist) doesn\'t work, and a regular for loop won\'t work either.

What I have is:

ArrayList

        

Answer 1

Streams are perfect for these sort of problems.

Forecast highest = forecasts.stream()
                            .max((fc1, fc2) -> fc1.getTemp() - fc2.getTemp())
                            .get();