simple array problem

[hugo84]

How do i print out the answer of v[i] *=v[i]; in squareVector in main method? i get [D@19821f

   
 public class arrays2{
       public static void main(String[] args){
         double [] array1= {5,10,15,20};
         for(int i=0; i < array1.length; i++){
            System.out.println(squareVector(array1));
         }
      
      }//end main
   
   
       public static double [] squareVector(double[]v){
         for(int i =0; i <v.length; i ++)
            v[i] *=v[i];
         return v;
      }
   
   }