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Question about the task

Cats in the Universe

Java Syntax, Level 4, Lesson 2

Under discussion

Write code to correctly count the number of cats created (count) and display the correct number of cats on the screen.

Requirements:

The program should display text on the screen.
Don't change the line responsible for screen output.
The Cat class must have only one count variable.
The Cat class's variable count must be a static int, have a public access modifier, and be initialized to zero.
The main method should have only two initialized Cat variables.
The variable count must store the actual number of cat objects created.

package com.codegym.task.task04.task0407; /* Cats in the Universe */ public class Solution { public static void main(String[] args) { Cat cat1 = new Cat(); int count = 0; count = count + 1; Cat.count = count; Cat cat2 = new Cat(); count = count + 1; Cat.count = count; System.out.println("The cat count is " + Cat.count); } public static class Cat { public static int count = 0; } }

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numan

Level 13 , aurangabad , India

20 July 2020, 00:25

you are using class name instead of variable. you used "Cat.count" its wrong it is "cat1.count and " cat2.count".

Cory Keller

Level 4 , Sankt Johannisberg, Germany

27 January 2020, 17:52

Hint: you're making it too hard on yourself. Take a look at increments and decrements again. Two lines max.

Ramadan Ali Uosef

Level 5 , Nofalia, Libya

6 September 2019, 20:05

public class Solution { public static void main(String[] args) { Cat cat1 = new Cat(); cat1.count++; Cat cat2 = new Cat(); cat2.count++; System.out.println("The cat count is " + Cat.count); } public static class Cat { public static int count = 0; } }

Dmitriy Bursa

Level 27 , Kyiv, Ukraine

7 July 2019, 13:45

Variable count is a class variable, you can just increment it using Cat.count++ after each new instance

Ritik Singh

Level 8 , Gwalior, India

7 July 2019, 10:48

package com.codegym.task.task04.task0407; /* Cats in the Universe */ public class Solution { public static void main(String[] args) { Cat cat1 = new Cat(); //write your code here cat1.count += 1; Cat cat2 = new Cat(); //write your code here cat2.count += 1 ; System.out.println("The cat count is " + Cat.count); } public static class Cat { public static int count = 0; } }

hidden #10362262

Level 9

4 November 2018, 02:07

The Cat class should have as its constructor a Cat () constructor that contains an iteration of the static count variable.

BennyGreen

Level 4 , France

3 November 2018, 11:28

"The variable count must store the actual number of cat objects created." ==> you must use the static variable count declared in the Cat class. kapil's hint is not correct : since the variable "count" is static, you can't use "this.count" or "cat1.count"...

Roman

Level 41

2 November 2018, 10:46

Do not use the additional variable "count".

kapil

Level 12 , delhi, India

2 November 2018, 09:40

try using cat1.count++; cat2.count++; use this after every cat object