What’s a library? Wikipedia defines library as a collection of sources of information and similar resources, made accessible to a defined community for reference or borrowing. Library is a place which contains tons of books and resources which we can go and access. Packages in Java are somewhat similar. A package in Java is a group of …
Consider we have to write classes for cars which displays their individual features. We will require different classes for different cars. But there are a lot of features which are same across these cars. We keep all these similar features in a single class, like a template and extend this class for specific cars. Interfaces …
What is an interface? | Java Advanced | Part – 9 Read More »
What is encapsulation? Imagine you have a water bottle which is filled with water upto the brim. There are two marbles present inside the water bottle. Can you pull these marbles out without spilling the water? What if you are given a pair of tongs? You can, right? Encapsulation is a concept in Object Oriented …
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Imagine you are driving a car. While driving you accelerate, apply breaks, shift gears, right? Do you ever think about the car engine which produces the energy to move the vehicle ahead? No You just focus on the things which are important while driving. Knowing how engine works won’t help you. You remember the important …
I (Bjarne Stroustrup) developed C++ at Bell Labs in 1980. It is very similar to C Programming that my mate, Dennis Ritchie, created in the early 1970s. I developed C++ as an extension to the C language. I developed C++ to provide Simula’s facilities for program organization together with C’s efficiency and flexibility for systems …
The simple meaning of polymorphism is having different forms or shapes. A real-life example of polymorphism can be the moon as viewed from earth. The property of moon to have different shapes, i.e the phases of the moon. In Object Oriented Programming, polymorphism is a way to perform a single action in different ways. In Java, polymorphism …
What is Overloading and Overriding? We read overloading and overriding separately so that we are easy to understand. So we start with overloading first What is overloading? But to address the individuals we use first name along with last name to uniquely identify that individual. Overloading is quite similar to what we saw above. Overloading is …
Overloading and Overriding | Java Advanced | Part-5 Read More »
What is inheritanc in java Why do I look so similar to my father? My nose is also exactly like him. That’s because you have inherited his features. Inheritance is when a class derives some properties from another class. Just like human beings inherit features from their parents. The class which takes/inherits the properties is known as child class. And …
A constructor is a function with same name as a class that is used to initialize class attributes etc. this function is automatically called when we create an object of that class. A constructor is a function that has the same name as the class. public class learningConstructor{ public learningConstructor(){ //Constructor //statements } } In …
What is a constructor in java? | Java Advanced | Part – 3 Read More »
My mom has given me strict instructions to not step outside the room during the study hours. She has restricted my access to the rest of the house. And wants me to focus on studies completely. I wonder if she knows about access control modifiers. Access control modifiers Access control modifiers are keywords which are …
What are access control modifiers? | Java Advanced | Part – 2 Read More »
