Check out the full series of Questions Management tutorial here. In the previous tutorial, we prepared all the necessary configurations to build an API to update a category: a Category object that holds information about a category, a CoreCategoryService interface with a CoreCategoryServiceImpl implementation to… Read More
The principle of encapsulation in Java makes sense: an object does not allow external objects to directly access the properties of that object, must via the methods that the object allows. The example below the Student object has two properties named name and age, which… Read More
Check out the full series of Questions Management tutorial here. As I mentioned earlier, in the previous tutorial, we have prepared all the necessary information and configurations to be able to build API updating category such as a document Category object containing information about a… Read More
Overloaded methods in Java are methods that have the same name but different the parameter list. In this tutorial, we will learn how to create and use the overloaded methods in Java. Some of the guidelines below for defining our overloaded methods are: Overloaded methods… Read More
In this tutorial, we will learn about the method in Java, how to define a method which can take a parameter or not, and also in case of a return data type or not for that method. We will fully learn about it. Components of… Read More
Check out the full series of Questions Management tutorial here. In the previous tutorial, we prepared the necessary information to build adding new category using Angular in the Frontend of our Questions Management application such as a CategoriesService for calling to the API Category Service, an… Read More
In this tutorial, we will learn about the constructor of an object, how to create them, what is the difference between the default constructor and the constructor we define and final what is the overloaded constructor? Definition of the constructor In Java, the constructor is… Read More
Once you’ve created the interface for the Categories section, now it’s time to call the APIs of the API Category Service to add, remove, edit, and display all categories. In this tutorial, I will guide the first step is to display all categories using Angular.… Read More
All objects in Java are defined based on a basic object, java.lang.Object. This Object object will allow Java to handle all objects from the time they are created until they are no longer used. In this tutorial, we will learn more about what I just… Read More
Next to Part 1, let’s take a look at the remaining two scopes of variables in Java, and look at the case of variables with the same name but different in scope, how Java handle that. The variable is inside an object The variable is… Read More
