What are instance variables in Java?

Can you explain what instance variables are in Java?

Sure! Instance variables are variables defined in a class but outside any method. They are specific to each instance of the class.

How do instance variables differ from local variables?

Instance variables are accessible throughout the class and retain their values across method calls, while local variables are only accessible within the method they are defined in.

Can you give me an example of how to use instance variables?

Of course! Here's a simple example:

class Dog {
    String name; // instance variable
    int age; // instance variable

    Dog(String name, int age) {
        this.name = name;
        this.age = age;
    }
}

In this example, name and age are instance variables.

Are instance variables initialized automatically?

Yes, instance variables are automatically initialized to default values (like null for objects, 0 for integers) if not explicitly initialized.