import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpHead;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;

public class HttpClientExample {
    public static void main(String[] args) {
        // HttpClient 인스턴스 생성
        HttpClient httpClient = HttpClientBuilder.create().build();
        
        // HEAD 요청을 보낼 URL 설정
        String url = "https://www.example.com";
        
        // HttpHead 객체 생성
        HttpHead httpHead = new HttpHead(url);
        
        try {
            // HEAD 요청 보내기
            HttpResponse response = httpClient.execute(httpHead);
            
            // 응답 상태 코드 확인
            int statusCode = response.getStatusLine().getStatusCode();
            System.out.println("Status Code: " + statusCode);
            
            // 응답 헤더 확인
            System.out.println("--- Response Headers ---");
            Arrays.stream(response.getAllHeaders())
                    .forEach(header -> System.out.println(header.getName() + ": " + header.getValue()));
                    
            // 응답 본문은 HEAD 요청에서는 존재하지 않으므로 출력하지 않음
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            // HttpClient 종료
            httpClient.getConnectionManager().shutdown();
        }
    }
}