how to solve?

Question about the task

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public class Solution {
    public static void main(String[] args) {
        Cat cat1 = new Cat();
        Cat cat2 = new Cat();
        Cat Cat3 = new Cat();

        cat1.Cat("Kitty",6,12,13);
        cat2.Cat("Mary",7,13,14);
        cat3.Cat("Sany",8,14,15);
    }

    public static class Cat {
        private String name;
        private int age;
        private int weight;
        private int strength;

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

where is the problem?

Comments (6)

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Arshdeep

Level 6 , Not in list, India

25 May 2020, 20:18

Cat cat1 = new Cat("Kitty",5,8,10); Cat cat2 = new Cat("Lucy",6,8,11); Cat cat3 = new Cat("Mini",8,8,12); just define the three cat objects in the main function like this as the class cat is defined in parametrized constructor!

KevinTing

Level 7 , Taipei, Taiwan, Province of China

19 February 2019, 03:00

public Cat is the Cat Class constructor with 4 parameters

Vatsal Patel

Level 15 , Naperville, United States

7 February 2019, 22:58

There is no default constructor so you cannot do: Cat cat1 = new Cat(); You need to do: Cat cat1 = new Cat("Cat1", 2, 10,15);

Anita Molnár

Level 17 , Budapest, Hungary

31 October 2019, 07:01

What do you mean "default"? Can you explain this please, because I don't get this. I used to create object like this before with no problem and I don't understand why isn't work it here.

Abdul-Hamed Mohammed

Level 8 , canton, USA

16 February 2020, 08:59

public Cat(String name, int age, int weight, int strength) { this.name = name; this.age = age; this.weight = weight; this.strength = strength; The above is a parameterised constructor in a Cat class. So, once we define a constructor for a Cat class which is parameterised constructor then the default constuctor goes away. If you want one then we have to define it again like below. Default construct = public Cat(){ }. When we do not explicitly define a constructor for a class, then java creates a default constructor for the class. It is essentially a non-parameterized constructor, i.e. it doesn't accept any arguments. The default constructor's job is to call the superclass constructor and initialize all instance variables.

Pavlo Plynko Java Developer at CodeGym

18 August 2018, 21:12

useful

Cat cat1 = new Cat("Kitty",6,12,13);