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 used to find the square root of the given number. Math.max(4, 2): It is used to find the maximum of the given numbers. Math.min(4, 2):

Generics in Java program was introduced in Java version 5. It is used to ensure the data type safety of objects. So, it constructs the code steady by detecting bugs at compile time. Why do we need generics in Java? When we write programs, errors occur. Some errors occur at run time while some errors occur at compile time. Those errors which occur at compile-time can be easily detected and rectified in the program. But, run time errors occur when

In this article, we will learn how to access variable from another class in java. There are two ways to get variables from another class. Create an object of another class in the main class Extend another class in the main class Let us take a look at both these methods one by one with the help of sample programs. Method 1: Create Object of Another Class in Main Class In the following example, to access the variable ‘a’ of

In this article, we will see what is a global variable and how we can use this in our Java programs. In Java, all the functions and data members are declared inside a class and every declaration has to be done inside it. If we declare them outside the class, then they would not be accessible by the object of that class. Therefore, in Java, there is no such precise concept of global variables because these are described at the

As programmers work with real-life entities, object-oriented programming allows programmers to achieve the same. Objects are used to store knowledge, data, task, state, and other different OOP tasks and methods.  This article is going to explain the fundamental four pillars of object oriented programming in java. Image Source 1. Encapsulation Encapsulation is achieved when the object of the class maintains the private state. Other objects are not allowed to access these objects; despite that, the other objects can only access

Inheritance is one of the pillars of the Java programming language. Learning OOP (Object Oriented Programming) without knowing and understanding the concept of Inheritance, its pros and cons are incomplete. Inheritance is a process in which a class acquires all the data members and its parent class methods. The basic idea behind it is that you create new classes based on the existing classes with additional data and methods. Example:

In the above example, there are two classes SuperHello