I can't figure it out!

Question about the task

Creating cats

Java Syntax, Level 5, Lesson 9

Resolved

Help, where is my mistake?

Create the Cat class with five constructors:
- Name,
- Name, weight, age
- Name, age (standard weight)
- Weight, color (name, address, and age are unknown; the cat is homeless)
- Weight, color, address (someone else's pet)

The constructor's job is to make the object valid.
For example, if the weight is unknown, then you need to specify some average weight.
A cat can't weigh nothing.
The same applies to age and color. But there may or may not be a name (i.e. name might be null).
The same applies to the address (it might be null).

Requirements:

The Cat class must have a String variable name.
The Cat class must have an int variable age.
The Cat class must have an int variable weight.
The Cat class must have a String variable address.
The Cat class must have a String variable color.
The class must have a constructor that takes a name as an argument, but initializes all variables except the address.
The class must have a constructor that takes a name, weight, and age as arguments, and initializes all variables except the address.
The class must have a constructor that takes a name and age as arguments, and initializes all variables except the address.
The class must have a constructor that takes a weight and color as arguments, and initializes all variables except the name and address.
The class must have a constructor that takes a weight, color, and address as arguments, and initializes all variables except the name.

package com.codegym.task.task05.task0517; /* Creating cats */ public class Cat { //write your code here public String name; public int weight = 10; public int age = 0; public String address = null; public String color = "brown"; public Cat(String name){ this.name = name; weight = 10; age = 0; color = "brown"; } public Cat(String name, int weight, int age){ this.name = name; this.weight = weight; this.age = age; color = "brown"; } public Cat(String name, int age){ this.name = name; this.age = age; weight = 10; color = "grey"; } public Cat(int weight, String color){ this.weight = weight; this.color = color; name = null; age = 0; color ="black"; } public Cat(int weight, String color, String address){ this.weight = weight; this.color =color; this.address = address; age = 0; } public static void main(String[] args) { Cat cat1 = new Cat("Marvell"); Cat cat2 = new Cat("Sims",10,8); Cat cat3 = new Cat("Paul",3); Cat cat4 = new Cat(10,"white"); Cat cat5 = new Cat(3,"black","S.Patrick"); } }

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parthasarathy t s

Level 6 , Mumbai, India

20 June 2019, 03:45

public class Cat { //write your code here public String name; public int weight = 10; public int age = 0; public String address = null; public String color = "brown"; public Cat(String name){ this.name = name; weight = 10; age = 20; color = "brwn"; } public Cat(String name, int weight, int age){ this.name = name; this.weight = weight; this.age = age; color = "brown"; } public Cat(String name, int age){ this.name = name; this.age = age; weight = 10; color = "grey"; } public Cat(int weight, String color){ this.weight = weight; this.color = color; // name = null; age = 90; color ="black"; } public Cat(int weight, String color, String address){ this.weight = weight; this.color =color; this.address = address; age = 10; } public static void main(String[] args) { } }

Kasiganesan Ranganathan

Level 6 , Chennai, India

16 February 2019, 01:47

Hi friend, You cannot keep age =0 keep age>0 hope will work. I don't find any other error.

// Java Poser

Level 18 , Cincinnati, United States

13 February 2019, 19:48

You already gave your instance variables some default values, you don't have to worry about re-assigning them in every constructor.( but you forgot to give your "name" instance variable the default value of "null"). Also, i'm not sure if it matters here but, in the example it showed us in the previous lesson, the instance variables were all private instead of public, so you might wanna make them private

Guadalupe Gagnon

Level 37 , Tampa, United States

5 February 2019, 21:54

useful

line 43 is failing one condition. You already have the color being initialized on line 40 Lines 11-14 are probably failing the rest. You should get rid of the assignment operators.

ira.iurciuc

Level 10 , Chisinau, Moldova, Republic of

6 February 2019, 13:05

whatever I do, 6-th, 9-th, 10-th conditions are not ok..

ira.iurciuc

Level 10 , Chisinau, Moldova, Republic of

6 February 2019, 13:06

package com.codegym.task.task05.task0517;

/*
Creating cats

*/

public class Cat {
    //write your code here
    public String name;
    public int weight;
    public int age;
    public String address;
    public String color;

    public Cat(String name){
        this.name = name;
        weight = 10;
        age = 0;
        color = "brown";
    }

    public Cat(String name, int weight, int age){
        this.name = name;
        this.weight = weight;
        this.age = age;
        color = "brown";

    }

    public Cat(String name, int age){
        this.name = name;
        this.age = age;
        weight = 10;
        color = "grey";
    }

    public Cat(int weight, String color){
        this.weight = weight;
        this.color = color;
        name = null;
        age = 0;
    }

    public Cat(int weight, String color, String address){
        this.weight = weight;
        this.color =color;
        this.address = address;
        age = 0;
    }


    public static void main(String[] args) {
        Cat cat1 = new Cat("Marvell");
        Cat cat2 = new Cat("Sims",10,8);
        Cat cat3 = new Cat("Paul",3);
        Cat cat4 = new Cat(10,"white");
        Cat cat5 = new Cat(3,"black","S.Patrick");
    }
}

Guadalupe Gagnon

Level 37 , Tampa, United States

6 February 2019, 14:09

i messaged you