Basic Client structure

client.java

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+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.net.http.HttpResponse.BodyHandlers;
+import java.util.concurrent.CompletableFuture;
+import java.net.http.HttpClient;
+
+public class client {
+    public static void main(String[] args) {
+        try {
+            HttpRequest req = HttpRequest.newBuilder(new URI("https://postman-echo.com/get"))
+            .version(HttpClient.Version.HTTP_2)
+            .GET().build();
+
+            HttpClient client = HttpClient.newBuilder().build();
+            
+            HttpResponse<String> response = client.send(req,BodyHandlers.ofString());
+
+           System.out.println(response.body());
+        } catch (URISyntaxException | IOException | InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+}