Abstraction is one of the main pillars of OOPS in Java. In simple words, abstraction can be used to hide unwanted data from the users and only important data is visible to the users. For Example, The outer structure of a bike is visible to people instead of seeing all components within the bike. Abstraction …
Abstraction involves hiding the complex features of a system and showing only the essential features, making it easier to understand by the user. Java abstraction has various advantages and disadvantages that will be covered in this article. Advantages of Abstraction in Java Increasing Understandability of the Code Abstraction is a technique that makes it easier …
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Method overloading states that we can have methods with the same name but something in their parameters should be different. If you know about constructor overloading then it is pretty similar to method overloading. Method overloading helps us from writing the same methods under different names. For example, a method involving multiplication of 2 numbers …
The word “Encapsulation” means that closing something like we put the main power of the tablet inside the capsule. It is a mechanism that is done to bind the data and protect it from being used by everyone. After doing encapsulation, the variables and the data of one class cannot be used in another class …
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This article will look at how we can use Java Reflection API to invoke a Static method. We will see the steps and the explanation with code. Let us first have a quick look at Reflection API. Reflection in Java is a process of examining or modifying the behavior of a class at run time. …
In this article, we will talk about the Java program for employee details using class and object. An Employee is a person or also be referred to as an entity that consists of various attributes such as – emp_id, emp_name, emp_salary, emp_department, emp_email, emp_address, and many more. We use the getter (to receive Employee details) …
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In this article, we will learn about covariant return types in Java. Before Java version 5.0, we could not change the return type of an overridden method but a new method was introduced in JDK 5.0, called covariant where we could change the return type of the overridden method. The return type must be non-primitive. …
In this article, we will discuss static import in Java. Just as import statements are used to access a class without its package qualification. In a similar manner, static imports are used to access static members without their class qualification. Some basic static methods used with the class names are as follows: Math.sqrt(4): It is …
