1. 입력public class Main{ public static void main(String[] args) throws IOException{ BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(br.readLine()); Scanner sc = new Scanner(System.in); }} 2. 문자열 String str = "apple"; str.length(); // 5 str.charAt(0); // a str.indexOf("p"); // 1 ..