What is the syntax for creating a Comparator in Java 8?

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The syntax for creating a Comparator in Java 8 is:

Comparator<T> comparator = Comparator.<T>comparing(Function<T, R>)
                        .thenComparing(Function<T, R>)
                        .reversed();

Where T is the type of object being compared, and R is the type of the key used for comparison. Function<T, R> is a lambda expression that extracts the key from the object being compared. The .thenComparing() method is used to chain multiple keys for comparison, and .reversed() is an optional method for sorting in reverse order.