class return [D@15db9742

Question

I have a simple class named "Trida"

public class Trida {
    public double[] append(double[] pole1, double[] pole2){
        int length = pole1.length + pole2.length;
        double[] pole3 = new double[length];
        for (int i = 0; i < pole1.length; i++){
            pole3[i] = pole1[i];
            pole3[i + 1] = pole2[i];
        }
        return pole3;
    }

public static void main(String[] args) {
        Trida trida = new Trida();

        double[] pole1 = {1.0, 3.0};
        double[] pole2 = {2.0, 4.0};
        System.out.println(trida.append(pole1, pole2));
    }

When I run this code, terminal said [D@15db9742, but I want print field like that - [1.0, 2.0, 3.0, 4.0] Can you help me?

kerner1000 · Accepted Answer · 2017-11-08T10:05:12.937

0

Arrays.toString(trida.append(pole1, pole2))

Have also a look here.

In Java, arrays don't override toString(), so if you try to print one directly, you get weird output including the memory location.

edited Nov 08 '17 at 10:05

answered Nov 08 '17 at 09:52

kerner1000

3,382
1
37
57

It works! Thanks a lot! – Kos112567 Nov 08 '17 at 09:53
2

Some explanation for him maybe ? – Joachim Huet Nov 08 '17 at 09:53
@Kos112567 Don't forget to accept the answer. – giannis christofakis Nov 08 '17 at 10:03

class return [D@15db9742

1 Answers1