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;
      }
   
   }

[dlorde]

What exactly are you trying to print? In the code, you're squaring every element in the array in squareVector, then trying to print the whole array. In your question you're asking how to print the result of a single element being squared...

You can't just print a whole array by passing it to println, you have to print each element separately.

A prudent question is one-half of wisdom...
F. Bacon

[hugo84]

What exactly are you trying to print? In the code, you're squaring every element in the array in squareVector, then trying to print the whole array. In your question you're asking how to print the result of a single element being squared...

You can't just print a whole array by passing it to println, you have to print each element separately.

A prudent question is one-half of wisdom...
F. Bacon

Yes how do i print them seperately? im trying to print the returned value v

for(int i=0; i < array1.length; i++){
System.out.println(squareVector(array1[i]));
}

Error
arrays2.java:6: squareVector(double[]) in arrays2 cannot be applied to (double)
System.out.println(squareVector(array1[i]));