Classes in Java

Class

A class is a template or a blueprint that has definition for attributes and behaviour of objects of that class. It only provides definition for its objects. A real world example would be, ‘Human’ is a class which defines the basic attributes and behaviour of actual human beings. ‘Tiger’ is another class which defines characteristics of tigers. Similary, Coffee can be a class. In general, for the things (living or non-living) which have common properties and behaviour, we create a class for them.

A class has attributes and methods.

Example of a class:

class Coffee {

     //Attributes of Coffee
     private String name;
     private String colour;
     private String type;

     //Behaviour of Coffee
     public void energizeConsumer(){
        System.out.println("The consumer is energized.");
     }
}

Another Example of a class :

public class Scientist {
	
	private int id;
	private String name;
	private String dicipline;

}

Mobile.java class

public class Mobile {

	private String name;
	private String company;
	private int price;

	public void displayMobileInfo() {
		System.out.println("Name of the mobile : " + name + ", company : " 
	                        + company + ", price : " + price);
	}

}