[JAVA] Scanner next, nextLine, nextInt

Scanner in = new Scanner(System.in);
System.out.println(in.next());
// 5 4 3 2 1
// -> 5


System.out.println(in.nextLine());
// 5 4 3 2 1
// -> 5 4 3 2 1

nextInt는 공백 구분 가능