You need to add logic to assign random values to double[] array using randomFill method.
Change
public static double[] list(){ anArray = new double[10]; return anArray; }
To
public static double[] list() { anArray = new double[10]; for(int i=0;i<anArray.length;i++) { anArray[i] = randomFill(); } return anArray; }
Then you can call methods, including list() and print() in main method to generate random double values and print the double[] array in console.
public static void main(String args[]) { list(); print(); }
One result is as follows:
-2.89783865E8 1.605018025E9 -1.55668528E9 -1.589135498E9 -6.33159518E8 -1.038278095E9 -4.2632203E8 1.310182951E9 1.350639892E9 6.7543543E7