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Java read values from text file
BufferedReader

try {
        FileInputStream fstream = new FileInputStream("input.txt");
        DataInputStream in = new DataInputStream(fstream);
        BufferedReader br = new BufferedReader(new InputStreamReader(in));
        String strLine;
        int lineNumber = 0;
        double [] a = null;
        double [] b = null;
        // Read File Line By Line
        while ((strLine = br.readLine()) != null) {
            lineNumber++;
            if( lineNumber == 4 ){
                a = getDoubleArray(strLine);
            }else if( lineNumber == 5 ){
                b = getDoubleArray(strLine);
            }
        }
        // Close the input stream
        in.close();
        //print the contents of a
        for(int i = 0; i < a.length; i++){
            System.out.println("a["+i+"] = "+a[i]);
        }
    } catch (Exception e) {// Catch exception if any
        System.err.println("Error: " + e.getMessage());
    }

private static double[] getDoubleArray(String strLine) {
    double[] a;
    String[] split = strLine.split("[,)]"); //split the line at the ',' and ')' characters
    a = new double[split.length-1];
    for(int i = 0; i < a.length; i++){
        a[i] = Double.parseDouble(split[i+1]); //get the double value of the String
    }
    return a;
}

Array[] first= line.split("("); //first[2] will contain the values

Array[] arrayList = first[2].split(",");