All answers derived from the first.

Question about the task

Under discussion

How can the third one work and the others not, they are derived from the first. I dont understand.

Create a Cat class with five initializers:
- Name,
- Name, weight, age
- Name, age (standard weight)
- Weight, color (unknown name, address and age, i.e. a homeless cat)
- Weight, color, address (someone else's pet)

The initializer'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 program must not read data from the keyboard.
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 an initialize method that takes a name as an argument, but initializes all variables except the address.
The class must have an initialize method that takes a name, weight, and age as arguments, but initializes all variables except the address.
The class must have an initialize method that takes a name and age as arguments, and initializes all variables except the address.
The class must have an initialize method that takes a weight and color as arguments, and initializes all variables except the name and address.
The class must have an initialize method that takes a weight, color, and address as arguments, but initializes all variables except the name.

package com.codegym.task.task05.task0510; /* Initializing cats */ public class Cat { //write your code here public String name; public int age; public String address; public int weight; public String color; public void initialize(String name){ this.name = "Fluffy"; this.age = 5; this.weight = 5; this.color = "Black"; this.address = address; } public void initialize(String name, int age, int weight){ this.name = "Fluffy"; this.age = 5; this.weight = 5; this.color = "Black"; this.address = address; } public void initialize(String name, int age){ this.name = "Fluffy"; this.age = 5; this.weight = 5; this.color = "Black"; this.address = address; } public void initialize(int weight, String color){ this.name = name; this.age = 5; this.weight = 5; this.color = "Black"; this.address = address; } public void initialize(int weight, String color, String address){ this.name = name; this.age = 5; this.weight = 5; this.color = "Black"; this.address = "Unknown"; } public static void main(String[] args) { } }

Comments (2)

Popular
New
Old

You must be signed in to leave a comment

Abdur Rehman

Level 7 , Faisalabad, Pakistan

24 May 2019, 12:25

public class Cat { String name = null; int age; int weight; String address = null; String color; public void initialize(String name){ this.name = name; this.age=7; this.weight = 8; this.color="red"; } public void initialize(String name , int weight, int age){ this.name = name; this.age = age; this.weight = weight; this.color= "blue"; } public void initialize(String name , int age ){ this.name = name; this.age = age; this.weight = 89; this.color= "yellow"; } public void initialize(int weight , String color){ this.age = 94; this.weight = weight; this.color= color; } public void initialize(int weight , String color , String address){ this.address = address; this.age = 17; this.weight = weight; this.color= color; } public static void main(String[] args) { } } this worked for me

Павел Артеменко

Level 41 , Krasnodar, Russian Federation

20 May 2019, 18:45

Why are you not using passed parameters to initialize() methods? for example, here:

public void initialize(String name){
    this.name = "Fluffy";
    this.age = 5;
    this.weight = 5;
    this.color = "Black";
    this.address = address;
}

you've got name passed into method, but used "Fluffy" to initialize this.name