import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
public class HttpUrlConnectionExample {
public static void main(String[] args) throws IOException {
URL url = new URL("http://api.example.com/user/1");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
int responseCode = connection.getResponseCode();
if (responseCode == HttpURLConnection.HTTP_OK) {
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String line;
StringBuilder response = new StringBuilder();
while ((line = reader.readLine()) != null) {
response.append(line);
}
reader.close();
System.out.println("Response: " + response.toString());
} else {
System.out.println("Error: " + responseCode);
}
connection.disconnect();
}
}
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
public class ApacheHttpClientExample {
public static void main(String[] args) throws IOException {
String url = "http://api.example.com/user";
String requestBody = "{\"name\": \"John\", \"age\": 25}";
HttpClient client = HttpClientBuilder.create().build();
HttpPost post = new HttpPost(url);
post.setEntity(new StringEntity(requestBody));
post.setHeader("Content-type", "application/json");
HttpResponse response = client.execute(post);
HttpEntity entity = response.getEntity();
String responseBody = EntityUtils.toString(entity);
System.out.println("Response: " + responseBody);
}
}
