如何获取HttpClient请求的响应代码

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.HttpClientBuilder;

public class HttpClientExample {
    public static void main(String[] args) {
        // 创建HttpClient对象
        HttpClient httpClient = HttpClientBuilder.create().build();

        // 创建HttpGet请求
        HttpGet httpGet = new HttpGet("http://example.com");

        try {
            // 发送HTTP请求
            HttpResponse response = httpClient.execute(httpGet);

            // 获取响应代码
            int statusCode = response.getStatusLine().getStatusCode();
            System.out.println("Response Code: " + statusCode);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}