In this tutorials will teach you what is the Classes and Objects step by step. This is an important for developing a java projects. there are many students who struggling with this area. so that I bring this article for all to clear the doubts.
Classes
Classes are just a blue print or template.
Example
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | public class Product { <strong>//Attributes</strong> public String model; public String brand; public double price; public String serial; public boolean tested; <strong> //Methods</strong> public void sell() { System.out.println("Sales"); } public void repair() { System.out.println("repair"); } public void test() { System.out.println("test"); } } |
Objects
Object are including methods and attributes. i already created the class above.inside the class consist of attributes and methods. i have created the another class which name is test.java. By creating a object using the name of the class product.
1 2 | //Object Creation Product p1 = new Product(); |
Create the objects and assign the attributes and methods. i explained below code.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | public class test { public static void main(String args[]) { //Object Creation Product p1 = new Product(); p1.brand = "Toyato"; p1.model = "BMW"; p1.price = 500000; p1.tested = true; p1.sell(); Product p2 = new Product(); p2.brand = "abc"; p2.model = "BBB"; p2.price = 600000; p2.tested = true; p2.sell(); Product p3 = new Product(); p3.brand = "cvb"; p3.model = "ert"; p3.price = 700000; p3.tested = false; p3.sell(); System.out.println("Brand is " + p1.brand); System.out.println("model is " + p1.model); System.out.println("model is " + p2.model); System.out.println("model is " + p3.model); p1.sell(); } |
i have attached the video link below. which will do this tutorials step by step.
