Before Java 8, you can use the listFiles() method of the File class with the parameter of the directory that we want to get the list of files and directories to do this. Eg:
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File[] files = new File("/Users/khanh/Documents/code/huongdanjava.com").listFiles(); |
The return result will be a list of File objects… Read More
I introduced you to the JSON Binding specification of Jakarta EE to convert between JSON data and Java objects. To parse, generate, transform, or query JSON data, you can use another Jakarta EE specification, JSON Processing. How is it in details? We will learn together… Read More
JSON Binding is a Jakarta EE specification about converting between JSON data and Java objects, similar to the Jackson library that I introduced to you. In this tutorial, we will learn together about JSON Binding and how to use it with its implementation, Eclipse Yasson.… Read More
If you have worked with the Spring framework, many of you will know about the concept of Dependency Injection and how Spring uses this concept to implement its framework. Jakarta EE also defines a similar specification called Context Dependency Injection (CDI) to implement this Dependency… Read More
In part 1, I introduced you to some information about the Helm chart and how to generate a Helm project. In this section, we will proceed to edit the configuration files for the Kubernetes objects, then use Helm to deploy the example application. You will… Read More
Helm is a tool that helps us manage applications deployed using Kubernetes. You can imagine that to deploy an application using Kubernetes we will need many different configuration files such as Deployment, Service, Ingress, … Each time we deploy, the information of these configuration files… Read More
I introduced you to the “create” command of the Kubernetes Controller to create new objects such as Pods, Deployments in the Kubernetes cluster. We can also do this using the “apply” command. For example, I have a configuration file to create a new Pod with… Read More
In the previous tutorial, I introduced you to GraphQL, the problems that GraphQL solved for the limitations of RESTful Web Service. I also gave you a brief guide on implementing GraphQL’s Query type with Spring GraphQL and Spring Data JPA. In this tutorial, we will… Read More
In this tutorial, I will show you how to install Helm to make working with Kubernetes easier! First, go to Helm’s release page on GitHub to download the latest version of Helm at https://github.com/helm/helm/releases/. Helm has a full version for different operating systems, so depending… Read More
In the article An introduction to GraphQL, I gave you a brief introduction to how to build a GraphQL server using Spring Boot. In essence, Spring Boot already uses the GraphQL Java library and wraps everything behind the scenes related to processing a GraphQL query… Read More
