What is a Class in Java

• Class can declare using keyword class with class name.
• Class is blueprint or set of instruction from which object is created.
• Class is a collection of data members / variable and member function / method.
• Data members/variables are nothing but variables that is declare inside the class.
• Data member is also called as property.
• Member function is function that can be declare inside class for specific action.
• Whatever we can see in this world all are object.
• All object can be categorized into special group.
• Each group is termed as a class. 
• For example, a programmer can create a car class which emulates a car. 
• This class can contain the properties of a car (color, model, year, etc.) and methods (functions) that specify what the car does (drive, reverse, stop, etc.).

class className
      {
      }
 
Class car
 {
 var name;
  }

• Some of the common characteristics of dogs are 1.breed 2.age 3.size 4.color  that can be called as data member of object.
• Some of the common behaviors of the dogs are sleep ,sit,eat so these are called as action or method of the object.
• Class Name :- Dogs
• Data members or objects are :- size, age, color, breed, etc.
• Methods are :- eat, sleep, sit etc.

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