Not getting line 6 & 7

i think it should be Man.wife=woman; But if so I am not getting the code

You have a class Man ( capital M ). The object of that class is man ( with lower case m ). In the class Man you have a field of class Woman, which is called wife, so man.wife = woman ( the object woman of the class Woman ), try it

//Kindly help me understanding the code. I am not getting it. Its confusing. Please elaborate if possible programmatically. Thank You.

public class Solution {
    public static void main(String[] args) {
        //write your code here
        Man man = new Man();
        Woman woman = new Woman();
        man.wife = woman;
        woman.husband = man;

        System.out.println(man.wife);
        System.out.println(woman.husband);

    }

    public static class Man {
        public int age;
        public int height;
        public Woman wife;
    }

    public static class Woman {
        public int age;
        public int height;
        public Man husband;
    }
}

Ok, I will do my best, don't judge me too hard, I'm not a programmer...yet :D So, you create a class, a blueprint for an object. Think of it like the instructions to build a car in a factory, but you still don't have the object car ( it's still not build by the robots ). So, in the instructions you have fields ( color of the car, how fast can it goes, how many doors should it has and so on ) and methods ( car drive, honk, stop, reverse and so on ). The class contains all those things, on which you build your object - the instance of the class. In our case: we have two classes - a Man and a Woman, they both have 3 fields: age, height and wife / husband ( depending on what object we have ). Next step is creating our objects ( our cars ), following the instructions of the class:

Man man = new Man();
Woman woman = new Woman();

Great! Now we need to set some fields with values: Fields can be primitive data types ( int, double, boolean and so on ), but they can also be reference type as well ( objects ) and that's what we have. The Man class has a field of an object Woman, called wife ( same as age and height ). We need to set the new object ( man ) fields. With the "." ( dot ) operator we can access those fields, so:

man.wife = woman;

is the same as:

man.age = 35; // years
man.height = 180; //cm

The same logic is applied to the Woman class and setting it's field human to husband. Did you understood my explanation? Did it pass the system? I did not test it, I just answered you previous question. Also, this code should output the address of the objects in the heap memory:

com.company.Main$Woman@723279cf //just an example address
com.company.Main$Man@10f87f48 //just an example address

Dear remote87, It might annoy you. But asking you this NOT being as JUDGEMENTAL BUT BEING INQUISTIVE AS IAM NOT GETTING THE STUFF Again I got stuck in the following code.

public class Solution {
    public static void main(String[] args) {

        //write your code here
        Cat cat = new Cat();
        Dog dog =new Dog();
        Fish fish = new Fish();
        Woman woman = new Woman();
     // What I did here Just did but not getting anything why I did this?
       //and what`s being done here? and How?
        cat.owner= woman;
        dog.owner= woman;
        fish.owner=woman;
    }
Thank You

    public static class Cat {
        public Woman owner;
    }

    public static class Dog {
        public Woman owner;
    }

    public static class Fish {
        public Woman owner;
    }

    public static class Woman {
    }
}

Have a look at that code:

public class Solution {
    public static void main(String[] args) {

        //write your code here
        Cat kitten = new Cat("Bonzo", new Person("Delia", "Alexandria"));

        System.out.println("I'm a kitten and my name is " + kitten.name);
        System.out.println("i'm living together with my mistress " + kitten.owner.name +
                " in " + kitten.owner.address);
    }

    public static class Cat {
        public String name;
        public Person owner;

        public Cat(String name, Person owner) {
            this.name = name;
            this.owner = owner;
        }
    }


    public static class Person {
        public String name;
        public String address;

        public Person(String name, String address) {
            this.name = name;
            this.address = address;
        }
    }
}

We create a Person object inside the cats constructor call (and do not save a reference to it). Now a reference to that object is saved in the Cat field owner. If we have a Cat reference var, then we can access that saved Person reference variable using the cat object kitten to get the owner reference variable.. kitten.owner ( <- Person reference variable) and on that Person reference variable we can do everything that's valid for Person objects, like getting the name of the Owner: kitten.owner.name. That's how you can model a new object consisting of other objects. Really neat, huh:)