Private static Scanner scanner = new Scanner(System.in) I am self-learning Java and would love any feedback so that I can learn from creating this program.
#Java oops concepts programs code#
I posted this code in the hopes of getting people's opinion on if my program follows the standards of OOP and also for any improvements to how it is written. You can try Overriding a method to simplify one function of this program.
#Java oops concepts programs how to#
This is a simple program that practices your understanding of objects and how to manipulate their fields.
Transfer Funds asks the user for an amount to reduce from his account. Add Funds asks the user for an amount to put in his account. Check Balance simply returns the name of the user along with the remaining amount of funds in his account.
From there, the user can do 4 things, Check Balance, Add Funds, Transfer Funds and Exit the program. The program asks for the user’s name and a starting balance. The following program shows the method to create a Class and further create its objects in Java.I created a simple bank program. How to Create a Class and its Objects in Java Let us now learn how to create a class and how to create objects from the class in Java. It is a collection of properties (or states like size, color, etc.) and behavior (or functions like write, read, walk, talk, etc) and the different objects have different values of these properties and all of them or some of them perform some or all of the functions listed in a class. We can say that a Class is a blueprint from which Objects can be created.
Similarly, a car with the name “Honda City” and the number “DL6CAP8790” is an instance of the class “Car”. For example, a student with the name “Guneet” and roll number “1498” is an instance of the class “Student”. For instance, a Student is a class however a particular student with some name and unique roll number is an object.Īn Object is an instance of a Class. ClassesĪ class in OOPS is a “Collection of Objects”. So, we can say that any real-world entity is an Object. It also has functions like writing, scribbling, etc. It also has states like its color, brand, etc. It will also have behavior or functions like accelerating (a car can accelerate), applying brakes (while stopping), etc.Īnother example can be a pen. This is because it will have states (properties) like model name, brand name, color, and type (SUV or Sidan, etc.), etc. Here, by state we mean its properties for instance color, size, etc, and by behavior we mean its actions or the functions that it performs like walking, talking, etc.įor instance, we can say that a car is an object. This means that Objects are something that has a state and behavior. Let’s get started with Objects and Class. All the OOPS Concepts in Java with Examples So, we will learn more about OOPS and its importance and we dive into the OOPS concepts. These 4 pillars help in making programming in Java easy and the programs reusable. For now, we can say that Object-Oriented Programming is a type of programming that makes programming a lot easier by focusing on real-world entities (called objects).
We will discuss the Objects and Classes later in this article. Object-Oriented Programming is a paradigm in programming that deals with Objects and Classes. So, let’s get started by knowing the meaning of OOPS i.e. We will discuss different OOPS concepts in Java with examples like Classes, Objects, and Constructors, and we will majorly focus on the 4 pillars of OOPS. In this article, we will discuss the OOPS concepts in Java with examples.
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