thre wanted output : what i did which is wrong ! : instructor notes : / Create a
ID: 3728463 • Letter: T
Question
thre wanted output :
what i did which is wrong ! :
instructor notes :
/ Create an animal and print its info
// Parameters here are: Name, age, number of meals per day, and type (1
// = tiger, 2 = elephant, 3 = turtle, 4 = puffin)
There is a difference between the Type and ID attributes. In the example given by the Runner.java, the Elephant's ("Calvin") ID is indeed 1 but its Type is 2. Similarly, the Tiger's ("Fluffy") ID is 2 but its Type is 1.
While the ID should be automatically generated for each animal (in the order of creation), the type is always 1 for tigers and 2 for elephants. Moreover, if the Runner class had created a third animal (let's say another tiger), its ID is going to be 3 since it was the third animal created.
how do i create auto generated id in the class what i did was competly wrong ?
w .java. oce upe, Te outputo your poa the following: ID / Name Age CPD --------- 1) Calvin 5 960 (Elephant 4 320 (tiger) 320 ( Tiger 2 ) Fluffy Setting number of meals per day of Fluffy to 2 2 Fluffy 4640 Tiger Setting number of meals per day to 30! Error, animals cannot eat more than 3 meals per day! Fluffy 640 Ti GerExplanation / Answer
Please find the correct version of code below.
CODE
=====================
public class Animal {
private int ID, age, numberOfMeals;
private static int totalNumberOfAnimals = 0;
private String name, typeN;
public Animal() {
totalNumberOfAnimals ++;
ID = totalNumberOfAnimals;
name = "Fluffy";
typeN = "Tiger";
age = 4;
numberOfMeals = 1;
}
public Animal(String name, int age, int mealN, int typeN) {
totalNumberOfAnimals ++;
ID = totalNumberOfAnimals;
this.name = name;
this.age = age;
this.numberOfMeals = mealN;
switch(typeN) {
case 1:
this.typeN = "Tiger";
break;
case 2:
this.typeN = "Elephant";
break;
case 3:
this.typeN = "Turtle";
break;
case 4:
this.typeN = "Puffin";
break;
default:
this.typeN = "Invalid";
}
}
}
Explanation:
Instead of setting the ID based on typeN, we can use the value of totalNumberOfAnimals to set the value of ID.
The change which I am suggesting is to just set ID = totalNumberOfAnimals.
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