import java.net.http.HttpClient; import java.net.http.HttpRequest; import java.net.URI; import java.net.http.HttpHeaders; import java.net.http.HttpResponse; import java.util.HashMap; import java.util.Map; HttpClient httpClient = HttpClient.newHttpClient(); HttpClient httpClient = HttpClient.newBuilder() .connectTimeout(Duration.ofSeconds(10)) .proxy(ProxySelector.of(new InetSocketAddress("proxy.example.com", 8080))) .build(); HttpRequest.Builder requestBuilder = HttpRequest.newBuilder() .uri(URI.create("https://example.com/api/endpoint")) .header("Content-Type", "application/json") .POST(HttpRequest.BodyPublishers.ofString(requestBody)); \u200b HttpResponse<String> response = httpClient.send(requestBuilder.build(), HttpResponse.BodyHandlers.ofString()); String responseBody = response.body();