What is Enums An enum type is a special data type which contains a fixed set of constants. Java Enums can be thought of as classes which have…
What is Interface An interface is a group of related methods with empty bodies. It is another way to achieve abstraction. Implementation: To implement an…
What is Abstraction Data abstraction is the process of hiding certain details and showing only essential information to the user. Abstraction is an important concept…
What are Nested Classes The Java programming language allows you to define a class within another class or interface. Such a class is called a…
What is Method Overriding In inheritance, if the same method is defined in both the superclass and the subclass, then the method of the subclass…
What is Encapsulation The meaning of Encapsulation is to make sure that “sensitive” data is hidden from users. We know that private variables can only be accessed within the…
sudo sudo (Super User DO) command in Linux is generally used as a prefix for some commands that only superusers are allowed to run. Syntax for sudo…
What is charge? What is voltage? What is Current? What is watt? What is Magnetic Field? What is Electrical Field? What is Electro Magnetic Field?