Java 8 lambda predicate chaining?

Question

I can\'t get it to compile, is it even possible to chain predicate lambdas?

Arrays.asList(\"1\",\"2\",\"3\").stream().filter( (e -> e==\"1\" ).or(e-> e         


        

Answer 1

Arrays.asList("1","2","3").stream().filter( Arrays.asList("1", "2")::contains).count();

and yes method "either" is good idea

    public static void main(String[] args) {
        long count = Arrays.asList("1","2","3").stream().filter(either("1"::equals).or("2"::equals)).count();
        System.out.println(count);
    }

    private static  Predicate either(Predicate predicate) {
        return predicate;
    }

or you can use import static java.util.function.Predicate.isEqual; and write isEqual("1").or(isEqual("2"))