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What is a Class in Java?

• A class is a blueprint or template for creating objects.
• It defines properties (variables) and behaviors (methods) that the objects created from it will have.
• Objects are the real-world entities created based on a class.

Example

    
    class Car {
        // Properties (Fields)
        String brand;
        int year;

        // Behavior (Method)
        void displayInfo() {
            System.out.println(brand + " - " + year);
        }
    }
    
    

• Car is a class.
• brand and year are fields (variables).
• displayInfo() is a method (behavior).

Real Life Example

Real World	In Java
"Car" is a category	class Car {}
"BMW", "Tesla" are individual cars	Car bmw = new Car(); Car tesla = new Car();

Why do we need Classes?

• To organize code neatly.
• To model real-world things in programming.
• To allow Object-Oriented Programming (OOP) features like:
  1. Inheritance
  2. Polymorphism
  3. Encapsulation
  4. Abstraction

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