package lambda.lambda5.map; import java.util.ArrayList; import java.util.List; import java.util.function.Function; import static lambda.lambda5.map.StringToIntegerMapper.map; public class MapMainV4 { public static void main(String[] args) { List list = List.of("1", "12","123","1234"); // 문자열을 숫자로 변환 List numbers = map(list, s -> Integer.valueOf(s)); System.out.println("numbers = " + numbers); } }