My code seems to be correct and creative and even prints correct output but.......

Question about the task

Set of cats

Java Syntax, Level 8, Lesson 11

Under discussion

Here i removed a common cat of class but still ,last one didin't verify.....

1. Inside the Solution class, create a public static Cat class.
2. Implement the createCats method. It must create a Set of cats and add 3 cats to it.
3. In the main method, remove one cat from Set cats.
4. Implement the printCats method. It should display all the cats that remain in the set.
Each cat on a new line.

Requirements:

The program should display text on the screen.
Inside the Solution class, there must be a public static Cat class with a default constructor.
The Solution class's createCats() method must return a Set containing 3 cats.
The Solution class's printCats() method must display all the cats in the set. Each cat on a new line.
The main() method should call the createCats() method once.
The main() method should call the printCats() method.
The main() method must remove one cat from the set of cats.

package com.codegym.task.task08.task0819; import java.util.HashSet; import java.util.Iterator; import java.util.Set; import java.lang.String; /* Set of cats */ public class Solution { public static class Cat { } private static Cat cat1 = new Cat(); public static void main(String[] args) { Set<Cat> cats = createCats(); //write your code here. step 3 cats.remove(cat1); printCats(cats); } public static Set<Cat> createCats() { //write your code here. step 2 Set<Cat> cats = new HashSet<Cat>(); Cat cat2 = new Cat(); Cat cat3 = new Cat(); cats.add(cat1); cats.add(cat2); cats.add(cat3); return cats; } public static void printCats(Set<Cat> cats) { // step 4 for(Cat cat:cats){ System.out.println(cat); } } // step 1 }

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Nithin

Level 35 , Hyderabad, India

16 July 2019, 13:13

it may be due to the static variable on line 22. Try removing it and create it like other cats in createCats method. for removing a cat use iterator in the main method.

Iterator<Cat> itr = cats.iterator();
        while(itr.hasNext()) {
        	cats.remove(itr.next());
        	break;
        }