What is the signature of method which gets four double numbers and returns a double array?

Question

I'm a bloody Java beginner and need some help.

I was wondering what the signature of a public method called "feld" looks like which gets four double numbers and returns a double array.

My exercise says "return a double array". But can i even do that or do i need to return values of my Array? My code won't work at all.

public double [] feld (double q, double w, double e, double r){
            double [] A = {q;w;e;r};
            return A;
}

You should start writing your code with an IDE like eclipse etc. because it will show you these issues as you write your code. — Alex, Mar 08 '17 at 16:50
i use eclipse and i didn't get it although i checkt out eclipse error warning xD next time i know better — M. Mc Fly, Mar 08 '17 at 16:52

score 4 · Answer 1 · answered Mar 08 '17 at 16:34

4

Change double [] A = {q;w;e;r}; to double [] A = new double[] {q, w, e, r};

answered Mar 08 '17 at 16:34

Falla Coulibaly

759
2
11
23

score 1 · Answer 2 · answered Mar 08 '17 at 16:41

1

try this

public double [] feld (double q, double w, double e, double r){
        return new double[]{q,w,e,r};
}

Your version doesn't work, because the syntax was incorrect.There's a whole question about that here

answered Mar 08 '17 at 16:41

dumbPotato21

5,669
5
21
34

score -1 · Answer 3 · answered Mar 08 '17 at 16:46

-1

Do you want to print? İf you want :

public static void main(String [] args){
    double [] a = feld(1,2,3,4);
    for ( double i : a){
        System.out.print(i);
    }
} 

public static double [] feld (double q, double w, double e, double r){
    double [] A = {q,w,e,r};
    return A;}

answered Mar 08 '17 at 16:46

Yunus Emre

29
1
6

This would print "1234". Doesn't look that good for four individual numbers. – Tom Mar 08 '17 at 17:13
The answer is not directly related to the original question since its author is not asking about printing. – Matheus Moreira Mar 08 '17 at 17:48

What is the signature of method which gets four double numbers and returns a double array?

3 Answers3