Java Interview Goal

In this AI decade, Java developers are positioned to play a crucial role in various areas: 1. AI and Machine Learning: While Python is often the language of choice for AI and machine learning, Java still has its place, especially in enterprise-level applications and systems where stability, scalability, and security are paramount. Java developers can work on integrating AI and machine learning capabilities into existing Java-based systems or developing new AI-powered applications using Java frameworks like Deeplearning4j or Weka. 2. Big Data and Analytics: With the growing importance of big data analytics, Java developers can contribute to building robust data processing and analytics systems. Java is widely used in big data frameworks like Apache Hadoop and Apache Spark, enabling developers to work on distributed computing, data processing, and real-time analytics applications. 3. Cloud Computing: As more companies move their infrastructure to the cloud, Java developers can leverage t

For freshers, some technologies are relatively simpler to start with due to their ease of learning and abundant resources available for beginners: 1. Python: Known for its readability and simplicity, Python is often recommended as a first language due to its clean syntax and vast community support. It's used in various fields like web development, data analysis, artificial intelligence, and more. 2. HTML/CSS: Fundamental for web development, HTML (HyperText Markup Language) and CSS (Cascading Style Sheets) are essential and relatively easy to grasp. They form the backbone of web pages and are essential for anyone interested in web development. 3. JavaScript:Alongside HTML and CSS, JavaScript is crucial for web development, adding interactivity and functionality to websites. It's beginner-friendly and essential for front-end development. 4. Java: Although it might have a steeper learning curve than Python, Java is widely used in enterprise applications, Android development, and

  When two microservices need to communicate with each other but are running on different ports, there are a few approaches : 1.Direct Communication: If the microservices are deployed on the same network or infrastructure, they can communicate directly using their network addresses. You can use HTTP or any other appropriate protocol for communication. In this approach, each microservice would need to know the network address (IP address or domain name) and the port of the other microservice. Example: Microservice A running on port 8080 wants to communicate with Microservice B running on port 9090. Microservice A can make an HTTP request to Microservice B using its network address and port: HttpClient client = HttpClient.newHttpClient(); HttpRequest request = HttpRequest.newBuilder() .uri(URI.create("http://localhost:9090/api/resource")) .build(); HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString()); 2.Service Disco

  Java 11 introduced several new features and enhancements. Here are some notable features with examples: Local-Variable Syntax for Lambda Parameters: Java 11 allows var to be used in lambda parameters, which provides improved readability and conciseness. Example: java // Before Java 11   someList.forEach((String item) -> { System.out.println(item); }); // With Java 11   someList.forEach(( var item) -> { System.out.println(item); }) HTTP Client (Standard API): Java 11 introduced a new HTTP client API as a replacement for the deprecated HttpURLConnection . It provides a more modern and flexible way to send HTTP requests and handle responses. Example import java.net.URI; import java.net.http.HttpClient; import java.net.http.HttpRequest; import java.net.http.HttpResponse; public class HttpClientExample { public static void main (String[] args) throws Exception { HttpClient client = HttpClient.newHttpClient(); HttpRequest request = HttpRequest.newBuilder(