How can an instance variable be used in a class? Explain your answer. (java)

Instantiate the object and access the variable using object reference.

Explanation:

In order to use/access an instance variable in a class, the class needs to be instantiated. For example:

class Demo{

//Instance variable declaration

int testvar=0;

public static void main (String args[]) {

//Class instantiation

Demo d = new Demo ();

/ / The instance variable is accessed using the object reference

d. testvar = 1;

}

}

In case the instance variable in private then it can be accessed using its corresponding getter/setter methods.