1. HttpURLConnection:
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
public class HttpExample {
public static void main(String[] args) throws Exception {
URL url = new URL("https://api.example.com/users");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
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.toString());
connection.disconnect();
}
}
2. Apache HttpClient:
import org.apache.http.HttpEntity;
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;
import org.apache.http.util.EntityUtils;
public class HttpClientExample {
public static void main(String[] args) throws Exception {
HttpClient client = HttpClientBuilder.create().build();
HttpGet request = new HttpGet("https://api.example.com/users");
HttpResponse response = client.execute(request);
HttpEntity entity = response.getEntity();
String result = EntityUtils.toString(entity);
System.out.println(result);
}
}
3. OkHttp:
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
public class OkHttpExample {
public static void main(String[] args) throws Exception {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url("https://api.example.com/users")
.build();
Response response = client.newCall(request).execute();
String result = response.body().string();
System.out.println(result);
}
}
