In this tutorial you will learn how to enable and how to view Spring Cloud API Gateway Routes using Spring Boot Actuator. Developers use Actuator to enable API Gateway routes in order to keep track of the routes being used in their application. By exposing these routes through Actuator endpoints, developers can get valuable information…
Read More Viewing Spring Cloud API Gateway Routes with Spring Boot ActuatorSpring Boot Actuator is a useful feature that provides developers with a set of tools to monitor and manage their applications. However, some of the actuator endpoints are sensitive and can potentially expose sensitive information about your application. In this article, we’ll explore different ways to secure these endpoints to ensure your application is protected.…
Read More Securing Spring Boot Actuator Endpoints: Best PracticesIn this tutorial, I will explain in detail how to secure sensitive Spring Boot Actuator Endpoints using Spring Boot version 3. This tutorial is intended for beginners who want to learn how to monitor and manage their Spring Boot applications using Actuator. Spring Boot Actuator is a sub-module of Spring Boot that provides production-ready features…
Read More How to Secure Spring Boot Actuator Endpoints with Basic AuthenticationIn a microservices architecture, it is common to have multiple services communicating with each other over the network. This distributed nature of the architecture can make it challenging to diagnose and debug issues when they arise. To address this problem, developers often use monitoring(Micrometer) and tracing tools(Zipkin) to track the flow of requests between microservices.…
Read More Micrometer and Zipkin: How to Trace HTTP Requests in Spring Boot 3In this tutorial, we will explore one of the many ways to display images in Flutter. Specifically, we will learn how to create an image with rounded corners, a popular design element in modern mobile applications. Before diving into the main topic, it is important to note that Flutter offers a variety of options for…
Read More Image with Rounded Corners in FlutterIn this tutorial, you will learn how to remove the DEBUG banner in the Flutter app. Removing the DEBUG banner is crucial for ensuring that your Flutter mobile application looks polished and production-ready. It’s also important to note that this label can be misleading to users who may mistake it for an error or bug…
Read More Removing the DEBUG Banner in Flutter Appclass UserIdComparator implements Comparator<User> { public int compare(User user1, User user2) { if (user1.userId == user2.userId) { return 0; } else if (user1.userId > user2.userId) { return 1; } else { return -1; } } } We will now create a UsernameComparator class that establishes the comparison logic based on the username field. This class…
Read More Comparator interface in JavaIn Java 12 and Java 13, Switch Expressions were added as preview features, and in Java 14 they became a standard feature. The Switch Expressions feature extends regular Java switch statements and can be used as either a statement or an expression. The entire switch block evaluates to a value that can then be assigned…
Read More Java Switch ExpressionsIn this tutorial, you will learn how to create a Splash Screen in your Flutter mobile application. What is a Splash Screen? The splash screen is an introductory screen that displays a company’s logo or tagline. A plain white screen can make the app seem unprofessional, so it’s important to create a splash screen for your Flutter-built…
Read More Creating a Splash Screen in FlutterOutput: true true true As you can see, the Car class inherits the Vehicle class, which is itself an instance of the Object class. Similarly, the Car class is an instance of both the Vehicle and the Object class. In Java, all classes inherit some useful methods from the Object class, which we will discuss…
Read More Object Class in JavaIn this tutorial, you will learn how to rename columns in Pandas DataFrame. In a nutshell, Pandas is a popular data analysis and manipulation library in Python. It provides powerful tools for reading, writing, filtering, and transforming data in a variety of formats, such as CSV, Excel, and SQL databases. If you want to learn how…
Read More Rename Columns in Pandas DataFrame: ExplainedReversing a string is a common task in Java programming, and there are several ways to accomplish this. In this tutorial, we’ll explore four different methods for reversing a string in Java, using the StringBuilder class, the for loop, recursion, and a character array. We’ll provide examples of each method and explain how they work.…
Read More Reverse a String in JavaThe RestTemplate class within the Spring Framework is a simple HTTP client that enables your code to send HTTP requests and handle HTTP responses. This tutorial will demonstrate how to use RestTemplate to send various types of HTTP requests. Create Spring Boot App RestTemplate is a component of the Spring Framework and is typically utilized…
Read More Spring RestTemplate TutorialIn this tutorial, you will learn how to enable OpenAPI(Swagger) in your Spring Boot version 3 application. What is OpenAPI? OpenAPI (formerly known as Swagger) is a specification for building and documenting RESTful APIs. It allows developers to describe their API operations, inputs, outputs, and other aspects in a structured and machine-readable format. This documentation…
Read More Enable OpenAPI 3(Swagger) in Spring Boot 3In this tutorial, you’ll learn how to use the @PutMapping annotation in your RESTful web services app to handle HTTP PUT requests with a JSON or XML payload. This allows you to update user details, for example. Here’s an example CURL command to send an HTTP PUT request with JSON data containing user details: HTTP…
Read More @PutMapping in Spring Boot REST