Scoped Value in Java is a Java feature that allows us to get immutable data anywhere in related code we want, without having to pass this data from this method to another method so that it can be used later in a method that needs… Read More

The ThreadLocal class in Java is a class that allows us to store and retrieve the values of variables in the same thread. As long as it’s the same thread, you can store a value and retrieve it whenever we want. You can initialize objects… Read More

Structured Concurrency in Java is an improvement of Java from Java 19, on implementing and maintaining code related to the execution of tasks consisting of many sub-tasks handled by multi-threading. This improvement makes our code easier to read, and controls how the execution of subtasks… Read More

.properties files are files used to configure information for the application. This is information that can change during the process of developing and deploying the application to the production environment. This information will be defined with key and value pairs in the .properties file, for… Read More

In Java, to format a string to include what values, where these values are taken, you can use the static format() method of the String object along with the format you want. To format and print a string to the console, you can use the… Read More

Scanner class in Java is a class that helps us to read data from many different sources such as user input when running the application, files. In this tutorial, I will show you how to read the information that the user enters using this Scanner… Read More

In the previous tutorial, we learned together how to list files and folders in a certain folder but only for the folder we want. If you want to list all the subdirectories in this directory as well, because a directory can contain many subdirectories and… Read More

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:

The return result will be a list of File objects… Read More

In Java, the concept of immutable refers to classes whose objects do not change information after they are instantiated. Normally, to declare an immutable class, we would: Declare this class as final so that no class can extend from it. Declare the fields of that… Read More

In Java, to prevent the inheritance of a certain class, we will use the final keyword to declare that class. Examples are as follows:

Class Test will not be able to inherit JavaExample class because this JavaExample class is declared with final: A need… Read More