import org.apache.http.HttpEntity; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.ContentType; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.util.EntityUtils; CloseableHttpClient httpClient = HttpClients.createDefault(); HttpPost httpPost = new HttpPost("http://example.com/api/endpoint"); String requestBody = "{\"key1\":\"value1\", \"key2\":\"value2\"}"; StringEntity requestEntity = new StringEntity(requestBody, ContentType.APPLICATION_JSON); httpPost.setEntity(requestEntity); CloseableHttpResponse response = httpClient.execute(httpPost); int statusCode = response.getStatusLine().getStatusCode(); HttpEntity responseEntity = response.getEntity(); String responseBody = EntityUtils.toString(responseEntity); response.close(); httpClient.close();