# scanner

* `Scanner` : 키보드 입력이나 파일 등로부터 텍스트 값을 받아오기 위한 클래스

```java
package sec04.chap07;

import java.util.Scanner;

public class Ex01 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        String str1 = sc.next();
        String str2 = sc.next();
        String str3 = sc.nextLine();

        System.out.println("str1: " + str1);
        System.out.println("str2: " + str2);
        System.out.println("str3: " + str3);
    }
}

```

`next` : 스페이스를 비롯한 공백 단위로 끊어서 *(토큰으로)* 문자열을 받음

`nextLine` : 줄바꿈 단위로 끊어서 문자열을 받음

```java
package sec04.chap07;

import java.util.Scanner;

public class Ex02 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("단어를 입력해주세요.");

        while (sc.hasNext()) {
            String nextWord = sc.next();
            if (nextWord.equalsIgnoreCase("quit")) break;
            System.out.println("입력값: " + nextWord);
        }

        //  ⭐ 스캐너의 사용이 끝나면 OS자원을 반환
        //  파일 등으로부터 읽어오는데 사용시 필수
        sc.close();

    }
}

```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://leeans-dev-book.gitbook.io/docs/lecture/java/section3./scanner.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.