If we create a function with Void then there is no need to return any value but, if we declared a function with any data type int, float etc then we have return something out from the function. To do this, First we will create a class which holds a method to reverse an integer recursively. First we created one function to count number of digits in a given Number.
Introduction Quite often I see a question in a newsgroup or forum along the lines of: What is so special about it? Why should I use it? How do I use it? The person asking this type of question usually has experience of non-OO programming and wants to know the benefits of making the switch.
Unfortunately most of the replies I have seen have been long on words but short on substance, full of airy-fairy, wishy-washy, meaningless phrases which are absolutely no use at all to man or beast.
People tell me that my methods are wrong, but they are making a classic mistake. My methods cannot be wrong for the simple reason that they workand anybody with more than two brain cells to rub together will tell you that something that works cannot be wrong just as something that does not work cannot be right.
My methods are not wrongthey are simply differentand sometimes it is a willingness to adopt a different approach that separates the code monkeys from the engineers.
One reason why some people give totally useless answers is that it was what they were taught, and they do not have the intelligence to look beyond what they were taught.
Another reason is that some of the explanations about OO are rather vague and can be interpreted in several ways, and if something is open to interpretation it is also open to a great deal of mis -interpretation.
Even some of the basic terminology can mean different things to different people, as explained in Abstraction, Encapsulation, and Information Hiding. If these people cannot agree on the basic concepts of OOP, then how can they possibly agree on how those concepts may be implemented.
In compiling the following list I picked out those descriptions which are not actually unique to OOP as those features which already exist in non-OO languages cannot be used to differentiate between the two. It provides for better modeling of the real world by providing a much needed improvement in domain analysis and then integration with system design.
OOP is no better at modeling the real world than any other method. Every computer program which seeks to replace a manual process is based on a conceptual software model of that process, and if the model is wrong then the software will also be wrong.
OOP does not provide the ability to model objects which could not be modelled in previous paradigms, it simply provides the ability to produce different types of models where both the data and the operations which act upon that data can be defined encapsulated in the same unit class.
OOP does not guarantee that the model will be better, just that the implementation of that model will be different.
You should also consider the fact that it would be totally impractical to model the whole of the real world as it is simply too vast and too complicated.
It is only ever necessary to model those parts which are actually relevant to your current application, and it is the exercise of deciding what is and is not relevant which decides if your abstraction is correct. Bear in mind that unless you are developing software which directly manipulates a real-world object, such as process control, robotics, avionics or missile guidance systems, then some of the properties and methods which apply to that real-world object may be completely irrelevant in your software representation.
If, for example, you are developing an enterprise application such as Sales Order Processing which deals with entities such as Products, Customers and Orders, you are only manipulating the information about those entities and not the actual entities themselves.
In pre-computer days this information was held on paper documents, but nowadays it is held in a database in the form of tables, columns and relationships.
An object in the real world may have many properties and methods, but in the software representation it may only need a small subset. For example, an organisation may sell many different products with each having different properties, but all that the software may require to maintain is an identity, a description and a price.
A real person may have operations such as stand, sit, walk, and run, but these operations would never be needed in an enterprise application.Write a Program in Java to input a number and check whether it is an Automorphic Number or not. Note: An automorphic number is a number which is present in the last digit(s) of its square.
Example: 25 is an automorphic number as its square is and 25 is present as the last digits. Check Armstrong or Not. To check whether a number is an Armstrong number or not Armstrong number in Java Programming, you have to ask to the user to enter the number, now check whether the entered number is an Armstrong number or not as shown in the following program.
What OOP is NOT. As a first step I shall debunk some of the answers that I have seen. In compiling the following list I picked out those descriptions which are not actually unique to OOP as those features which already exist in non-OO languages cannot be used to differentiate between the two.
If the given number is equal to the sum of the Nth power of each digit present in that integer then, that number can be Armstrong Number. For example is Armstrong Number.
In this article we will show you, How to Write Python Program For Armstrong Number Using While Loop, For Loop, Functions and.
A number is called as ARMSTRONG number if,sum of cube of every digit present in the number is equal to the number itself then that number is called as armstrong schwenkreis.com example the is a armstrong number because 1^3+5^3+3^3= ← C++ program to check whether given number is palindrome or not.
Java program to check whether string is palindrome or not. schwenkreis.com last we shall call the display function to show whether it is a palindrome or not. Now we shall write a program and get a detailed explanation after this.