String url = "http://example.com"; HttpClient httpClient = HttpClient.newHttpClient(); HttpRequest request = HttpRequest.newBuilder() .uri(URI.create(url)) .GET() .build(); HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString()); System.out.println(response.statusCode()); System.out.println(response.body()); String url = "http://example.com"; String requestBody = "Hello, server!"; HttpClient httpClient = HttpClient.newHttpClient(); HttpRequest request = HttpRequest.newBuilder() .uri(URI.create(url)) .header("Content-Type", "text/plain") .POST(HttpRequest.BodyPublishers.ofString(requestBody)) .build(); HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString()); System.out.println(response.statusCode()); System.out.println(response.body());