import java.io.IOException;

import java.net.HttpURLConnection;

import java.net.URL;

import java.util.HashMap;

import java.util.Map;

public class ApiErrorDetector {

private static final int MAX_RESPONSE_SIZE = 1024 * 1024; // 1MB - limit memory usage

private static final int TIMEOUT_SECONDS = 5;

public static boolean checkApiResponse(String apiUrl) {

try {

URL url = new URL(apiUrl);

HttpURLConnection connection = (HttpURLConnection) url.openConnection();

connection.setReadTimeout(TIMEOUT_SECONDS * 1000);

connection.setConnectTimeout(TIMEOUT_SECONDS * 1000);

connection.setUseCaches(false); //Avoid caching for testing

connection.setDoOutput(true); // Required for POST requests. Can be removed if not needed.

connection.setRequestMethod("GET"); // Default is GET, but explicitly set for clarity

int responseCode = connection.getResponseCode();

if (responseCode >= 400) { // Consider 4xx and 5xx as errors

//Check response content to provide more detail

try {

String responseBody = connection.getInputStream().readString(MAX_RESPONSE_SIZE);

if(responseBody != null && !responseBody.isEmpty()){

//Basic error message detection - could be expanded with regex/parsing

if (responseBody.contains("error") || responseBody.contains("exception") || responseBody.contains("failed")) {

System.out.println("API Error: " + responseCode + " - " + responseBody);

return true; // Indicate error

}

}

} catch (IOException e) {

System.err.println("Error reading response body: " + e.getMessage());

}

return true; // Indicate error

}

} catch (IOException e) {

System.err.println("Connection error: " + e.getMessage());

return true; // Indicate error

}

return false; // No error

}

public static void main(String[] args) {

//Example Usage

String apiUrl = "https://example.com/api/data"; // Replace with your API endpoint

boolean hasError = checkApiResponse(apiUrl);

if (hasError) {

System.out.println("API response contains errors.");

} else {

System.out.println("API response is OK.");

}

}

}