JAVA OOPS CONCEPTS PROGRAMS MANUAL
JAVA OOPS CONCEPTS PROGRAMS SOFTWARE
JAVA OOPS CONCEPTS PROGRAMS CODE

Keywords used in object oriented programming It tells us how much space in memory needs to be allocated for an object.It has the same name as the class name.Mercedes-Benz car's speed is 100 Km/hr Keys points to remember about a Constructor in object oriented programming

JAVA OOPS CONCEPTS PROGRAMS CODE

The above example of the class and objects is representation in the code below. So, here we have created 3 objects from this class, the first one represents the Honda Car which has a speed of 100 km/hr, the second object represents the Jeep car with a speed of 500 km/hr and the third object represents the BMW car with the speed of 800 km/hr. To create a physical car we first have to create an object of this class with the help of a new keyword in Java. This Car class contains two variables, company (the company who manufactured the car), speed (speed of the car) and lastly, we have a method called as getSpeed() which prints the speed of the car. The above image contains a Car class and using this class we are creating multiple car objects. Refer to the figure shown below which will provide you with a pictorial view of how the classes and objects work.Ĭlasses and Objects pictorial view in Object Oriented Programming

You can create as many car objects as you want from the Car class provide different properties to every object. Using this object, we can manipulate the data which is present inside that object. After allocating the memory, the object will now have all the data (variables and methods) which we have defined inside our class. This is done with the help of a new keyword in Java. Creating an object simply means allocating memory to the class which we have created. To create a car in java we first have to create an object of that class. As just after creating a blueprint or a design of a car the physical car is not created, the same way whenever we define a class in java no object will be created which means no car will be created. The data which is stored inside a class is in a form of variables and methods. In OOP, the class is where we define all of such data and because of that class is also called a blueprint. These are the things that we first have to figure out related to the car, and based on this data or blueprint we can create the actual physical car.

JAVA OOPS CONCEPTS PROGRAMS MANUAL

For example, Let’s say we want to build a car (in this case car is the entity) then for that we first have to create a blueprint or a design of that car and that will contain the car’s dimensions like width & height, car’s name, model no, car’s speed, braking system, auto or manual mode, etc. The part 2 of the Object Oriented Programming series can be found here: 4 pillars of OOP: Object Oriented Programming Paradigms Classes and Objects in Object Oriented ProgrammingĬlass in java allows us to define all the variables and methods at one place related to a particular entity. Let’s understand the object oriented programming concepts in java by combining it with a real word example.

JAVA OOPS CONCEPTS PROGRAMS SOFTWARE

It follows the principle of software engineering called DRY “Don’t Repeat Yourself” which helps in minimizing the repetition of code. A programming style that revolves around objects knows as object oriented programming (OOP). An Object Oriented Programming (OOP) is one of the styles of writing robust, modular, reusable, and maintainable code.

Java oops concepts programs