Java String.startsWith

• c로 시작하는 문자열들만 추출
• x.startsWith("c")

		Stream<String> s1 = Stream.of("a1", "b1", "b2", "c1", "c2", "c3");

//		s1.filter( x -> x.startsWith("c")).forEach(x -> System.out.print(x + " "));
		Stream<String> s2 = s1.filter( x -> x.startsWith("c"));