帮我写一段java调用api接口解析成json格式

好的，以下是一段Java代码，用于调用API接口并将其解析为JSON格式：

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import org.json.JSONObject;

public class APICaller {
    public static void main(String[] args) {
        try {
            URL url = new URL("https://api.example.com/data");
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setRequestProperty("Accept", "application/json");

            if (conn.getResponseCode() != 200) {
                throw new RuntimeException("Failed : HTTP error code : " + conn.getResponseCode());
            }

            BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));

            String output;
            StringBuilder sb = new StringBuilder();
            while ((output = br.readLine()) != null) {
                sb.append(output);
            }

            JSONObject json = new JSONObject(sb.toString());
            System.out.println(json.toString());

            conn.disconnect();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

请注意，这只是一个示例代码，你需要根据你的具体情况进行修改。