Explain pls how overloaded constructor works in the provided solution

Question about the task

Make a family

Java Syntax, Level 8, Lesson 11

Under discussion

How does it work? what does this parameter mean

Human... children

I'm not sure we covered something like that in previous lessons. Will we have explanation of this concept in further lessons?

public Human(String name, boolean sex, int age, Human... children) {
    this.name = name;
    this.sex = sex;
    this.age = age;

    Collections.addAll(this.children, children);
}

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Nouser

Level 36 , Germany

6 April 2021, 06:47

Called varargs and that's what it is doing. You can use it as variable args. It has to be the last parameter of a method and then, when calling the method, you can give it no such argument of that type or one or 10 or whatever you want. Inside the method it is an array.

public static void main(String[] args) {
    varargs(1);
    varargs();
    varargs(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
}

public static void varargs(int... a) {
    System.out.println("Length: " + a.length);
    for (int num : a) {
        System.out.print(num + " ");
    }
}