What is Object and How can we use that from different class?

Here we need two different class to describe the Object. 

We are taking Human and HumanTest as our class.

______________________

HUMAN

_______________

sex

name

height

____________

talk()

- A Class

class Human{

String sex;                    //    instant variables

String name;            //    instant variables

float height = 6;              //    instant variables

void talk(){      // a method

    System.out.println("Hey, my name is Lanny!!!!");

       }

}

- A tester class which access objects, variables and methods

class HumanTest {

 public static void main(String[] args){

Human h = new Human(); // a human object

h.sex = "male"; // use dot operator (.) to set sex of human and do same with all variables

h.name = "Larry";

h.height = 6.0;

h.talk(); // to call talk method

     }

}


You can add more object in that, e.g Human l = new Human();, Human r = new Human(); etc and call their different methods too.



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