CodeGym/Help with Java Tasks/don't know where is mistake

Level 3

Delhi

31.08.2018
2364views
23comments

don't know where is mistake

Question about the task

Resolved

package com.codegym.task.task02.task0204;

/*
Family relations

*/
public class Solution {
    public static void main(String[] args) {
       Man men = new Man();
       Woman woman = new Woman();
       man.wife = woman;
       woman.husband = man;}  //man.wife=woman;   woman.husband = man;

    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;
    }
}

In the main method, create a Man object and save a reference to it in the variable man.
Also, create a Woman object and save a reference to it in the variable woman.

Hint: Use the following construct to create a Woman object and assign a reference to that object to the variable woman:
VariableType variableName = new TypeOfObjectBeingCreated();
Save a reference to the previously created Woman object in man.wife.
Save a reference to the previously created Man object in woman.husband (Hint: woman.husband = man).

Requirements:

In the main method, create a Man object and save a reference to it in the variable man.
In the main method, create a Woman object and save a reference to it in the variable woman.
In the main method, store a reference to the previously created Woman object in man.wife.
In the main method, store a reference to the previously created Man object in woman.husband.
The Man class must have 3 variables.
The Woman class must have 3 variables.

package com.codegym.task.task02.task0204; /* Family relations */ public class Solution { public static void main(String[] args) { Man man = new Man(); Woman woman = new Woman(); } 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; } }

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Albert

Level 6 , Hong Kong, Hong Kong

19 November 2020, 01:55

/* after going through several lessons and return back, I still do not understand what this lesson intends to teach us: is it a pure coincidence/habit that we create a new object in the format Man man = new Man(); Woman woman = new Woman(); ... Cat cat = new Cat(); and what if I declare Cat a = new Cat(); or Cat cat = new A(); are they representing different meaning as read by the JAVA machine? */

Misiu

Level 41 , Gdansk, Poland

19 November 2020, 02:30

That naming is for better reading and understanding a code. Cat a = new Cat(); - possible Cat dog = new Cat(); - possible Cat hdfhhsdgf = new Cat(); - possible Cat iDontKnowWhatNameOfVariableToPutHere = new Cat(); - possible Cat cat = new A(); - possible if class A is descendant of class Cat or implements interface Cat A b = new C(); - possible if class C is descendant of class A or implements interface A

Albert

Level 6 , Hong Kong, Hong Kong

19 November 2020, 04:40

thanks, the example you listed have made the picture more clear

Gagan

Level 2 , Palanpur, India

24 September 2018, 10:28

can anyone explain what is Man man = new Man(); i understand that 'man' is variable for object Man. What is 'new Man();' Please explain.

Himanshu Pal

Level 3 , Delhi, India

24 September 2018, 11:30

if you want to create a man so you need to write this code "Man man = new Man(); ".!! "new Man()" its means you create a new thing that is man

Himanshu Pal

Level 3 , Delhi, India

24 September 2018, 11:30

i think you got it

Gagan

Level 2 , Palanpur, India

24 September 2018, 15:48

Thanks Himanshu. So this 'new man' is called 'man' stored in reference variable 'Man'?

Himanshu Pal

Level 3 , Delhi, India

25 September 2018, 05:18

yes

Roman

Level 41

31 August 2018, 13:05

In the top code, you have an error in the variable name (man). In the lower code, you did not implement the requirements: In the main method, store a reference to the previously created Woman object in man.wife. In the main method, store a reference to the previously created Man object in woman.husband.

Himanshu Pal

Level 3 , Delhi, India

31 August 2018, 13:09

Man man = new Man(); Woman woman = new Woman(); man.wife = woman; woman.husband = man; like this

Roman

Level 41

31 August 2018, 13:11

You passed the tests?

Himanshu Pal

Level 3 , Delhi, India

31 August 2018, 13:16

Artem Divertitto Senior Android Developer at United Tech

31 August 2018, 13:25

but should. You have better show your code)

Himanshu Pal

Level 3 , Delhi, India

1 September 2018, 06:50

thanks @Tiym but codegym not accept this

Roman

Level 41

3 September 2018, 06:13

Please, show you finally code.

Himanshu Pal

Level 3 , Delhi, India

3 September 2018, 10:50

package com.codegym.task.task02.task0204;

/*
Family relations

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

Roman

Level 41

3 September 2018, 11:01

man.wife = Woman;
woman.husband = Man;

What is Man and Woman?

Himanshu Pal

Level 3 , Delhi, India

3 September 2018, 11:23

sorry not understand

Roman

Level 41

3 September 2018, 11:40

solution

for example:

int a = 5;
int b = A; // incorrect, variable A does not exist!

"A" and "a" are different variables.

Himanshu Pal

Level 3 , Delhi, India

3 September 2018, 11:45

thanks i got it after 4 days

Augustine Yanthan

Level 2 , Kohima, India

8 October 2018, 11:34

help H.P

Himanshu Pal

Level 3 , Delhi, India

9 October 2018, 06:56

augustine you just need to change this man.wife = Woman; woman.husband = Man;

Augustine Yanthan

Level 2 , Kohima, India

10 October 2018, 07:07

it Works thx.