Stream.max() returns the maximum element of the stream based on the provided Comparator. A Comparator is a comparison function, which imposes a total ordering on some collection of objects. max() is a terminal operation which combines stream elements and returns a summary result. So, max() is a special case of reduction. The method returns Optional instance.
Optional<T> max(Comparator<? super T> comparator) Where, Optional is a container object which may or may not contain a non-null value and T is the type of objects that may be compared by this comparator
Exception : This method throws NullPointerException if the maximum element is null.
Example 1 :
The maximum value is : 25
Example 2 :
Example 3 :
Maximum element in the stream is : k
Example 4 :
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