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Function composition

How to compose predicates together

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Two predicates are given:

Predicate<Character> isLetter = Character::isLetter;

Predicate<Character> isUpperCase = Character::isUpperCase;

Predicate<Character> predicate = ... // the composed predicate

How to compose them together so that the predicate returns the following results?

predicate.test('1'); // false
predicate.test('3'); // false
predicate.test('c'); // true
predicate.test('D'); // false
predicate.test('e'); // true
predicate.test('Q'); // false

Select one option from the list

predicate = isLetter.negate().or(isUpperCase)

predicate = (isLetter.or(isUpperCase)).negate()

predicate = isLetter.or(isUpperCase)

predicate = isLetter.and(isUpperCase.negate())

predicate = isLetter.negate().and(isUpperCase);

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