Convert String[] with text to double[]

Question

I have an Arraylist that I want to convert to a double[] array. I first convert the Arraylist to a String []. I then try to convert the String[] to a double[] but fail in the p

Answer 1

Loop throug the Array:

foreach String[]
    double[counter] = parseToDouble(String[counter])

EDIT:
Java:

   String[] str1 = list1.toArray(str1);
   double[] dou1 = new double[str1.length]
   for(int counter = 0; counter < str1.length;counter++)
      dou1[counter] = Double.parseDouble(str1[counter].replaceAll("RSP_\\d+",""));