Java: Remove double from string and store in array

Question

Hi folks, I have a string that will be different each time but follow the form of -3.33,-46.53,37.39,26.55,97.11,68.46,-32.46,-5.89,-62.89,-7.9, and i want to remove each number and store as an double in an array. even pseudocode would be great i'm drawing a blank. Cheers

Answer 1

 String[] doubles = myString.split(",");

then iterate over the doubles array and do Double.parseDouble();

Answer 2

Maybe something like:

String[] sa = yourString.split(",");
Double[] da = new Double[sa.length];
int idx = o;
for(String s : sa) {
   da[idx++] = Double.parseDouble(s); 
}

Answer 3

Alternative way, reads input from file and parses items as thy are read.

static java.util.ArrayList<Double> getData(String filename) throws FileNotFoundException {
 java.util.ArrayList<Double> result = new java.util.ArrayList<Double>();
 java.util.Scanner sc = new java.util.Scanner(new java.io.File(filename));

 sc.useDelimiter(",");
 while (sc.hasNext())
  result.add(Double.parseDouble(sc.next()));
 sc.close();

 return result;
}

If you want, you can just store them in a array like:

 Double data[] = null;
 getData("input.dat").toArray(data);