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Question about the task

Dog registration

Java Syntax, Level 5, Lesson 9

Under discussion

why are my test cases failing

Create the Dog class with three constructors:
- Name
- Name, height
- Name, height, color

Requirements:

The Dog class must have a String variable name.
The Dog class must have an int variable height.
The Dog class must have a String variable color.
The class must have a constructor that takes a name as an argument and initializes the corresponding instance variable.
The class must have a constructor that takes a name and height as arguments, and initializes the corresponding instance variables.
The class must have a constructor that takes a name, height, and color as arguments, and initializes the corresponding instance variables.

package com.codegym.task.task05.task0518; /* Dog registration */ public class Dog { //write your code here String name = null; String color; int height = 10; public Dog(String name){ this.name = name; } public Dog(String name,int heght){ this.name = name; this.height = height; } public Dog(String name,String color,int height){ this.name = name; this.color = color; this.height = height; } public static void main(String[] args) { } }

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Hoist

Level 32 , San Diego, United States

26 October 2021, 06:01

That's a lot of Dog naming ! A really good example of using the _THIS_ keyword in different methods / functions - when the Class has the same name -- ie Dog. Each property / field (the data of an object) needs to be clearly associated - set to define variable aspects of instance of the object.

Nikitata

Level 22 , Ba Sing Se, United States

13 July 2020, 22:12

1. Line 17 has a typo where you declare variable height. Should be this:

public Dog(String name,int height){

2. This error is a bit weird, but the order of your third constructor should be the name, height, then color. Change your third constructor to this:

public Dog(String name,int height,String color){
        this.name = name;
        this.height = height;
        this.color = color;
    }

Girish Patel

Level 8 , Hyderabad, India

23 September 2019, 10:59

private String name; private String color; private int height; public Dog(String name){ this.name = name; } public Dog(String name,int height){ this.name = name; this.height = height; } public Dog(String name,int height,String color){ this.name = name; this.color = color; this.height = height; }

Hoist

Level 32 , San Diego, United States

26 October 2021, 06:02

very tight code

Texas Pete

Level 7 , Bucharest, Romania

9 April 2019, 13:46

You have a typo in line 17 "int heght" is spelt wrong, also try to change the order of line 21 to what the verification error was, I don't understand if what you had written from line 21 is actually incorrect however if you change the order it will verify. public Dog(String name,int height,String color){ this.name = name; this.height = height; this.color = color; }

Mark Fernandez

Level 17 , Mumbai, Mexico

23 March 2019, 12:47

You also need to initialize the color. A dog cant be colorless

Mark Fernandez

Level 17 , Mumbai, Mexico

23 March 2019, 12:49

Along with that in the main method you will have to create a dog obj and pass the args in it.

Hoist

Level 32 , San Diego, United States

26 October 2021, 06:07

this is a great discussion thread on solving the pieces of the original _this_ code written