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To implement a simple TCP client and server in Java, you use the ServerSocket class for the server and the Socket class for the client. Here is a straightforward example of both, where they exchange simple text messages. 1. The TCP Server The server listens on a specific port and waits for a client to […]
Actually, the standard java.net.URI class in the JDK does not have a built-in Builder API. It only provides constructors and the URI.create(String) factory method. To build URIs using a builder pattern in Java, you have three common options: 1. Using URI Constructors (Standard JDK) While not a “builder,” the multi-argument constructor is the safest way […]
To fetch JSON using the Java HTTP Client (java.net.http), you typically send a GET request and process the response body as a String. Since the standard library doesn’t include a JSON parser, you’ll receive the raw JSON string, which you can then parse using a library like Jackson or Gson. Here is a clean example […]
To use WebSockets with the Java native HttpClient (introduced in Java 11 and fully supported in Java 25), you use the WebSocket.Builder. The process involves three main steps: 1. Create an HttpClient (or use an existing one). 2. Implement a WebSocket.Listener to handle incoming messages and events. 3. Build and open the connection using HttpClient.newWebSocketBuilder(). […]
To use HttpClient with JSON parsing in Java, the most common approach is to combine the standard java.net.http.HttpClient with a JSON library like Jackson or Gson. While HttpClient doesn’t have a built-in JSON parser, you can map the response body string to a Java object. Using Jackson (Recommended) Jackson is a powerful and widely-used library […]
To send asynchronous HTTP requests in Java using the java.net.http.HttpClient, you use the sendAsync() method. This method returns a CompletableFuture<HttpResponse<T>>, allowing you to handle the response without blocking the main thread. Here is a step-by-step example of how to implement this: 1. Basic Asynchronous GET Request This example demonstrates how to fire a request and […]
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