File I/O question

Question

Hi, guys
I'm making my program to read txt file and store the data (number) into 2D array.
My txt file looks like this:
* Test date: 05/25/05
* Test Temperature: 35F
~Tester: Bob Wilson
Current[mA] voltage[mV] Power[mW]
-0.0007 -0.0061 0.0006
-0.0002 0.0203 0.0066
0 0.2317 0.008
0.0017 0.5957 0.0008
I want to make array with only double values. Some body gave me an idea that let my program to read each line, tokenize it, and then call Double.parseDouble on the first token. If it throws an exception, you just skip it and move on, else you process it But I don't know where to start..and how to implement it.
Does anybody have good example source code I can take a look at?
Thanks a lot,
private void readTheFile()
// Open the file
int row=0;
int col=0;
openFile();
data[10][3];
FileReader file = new FileReader(fileName);
fileInput = new BufferedReader(file);
System.out.println("Read the file");
// Loop through file incrementing counter
try {
String line = fileInput.readLine();
while (line != null)
StringTokenizer st=new StringTokenizer(line);
while(st.hasMoreTokens())
String token=st.nextToken();
data[row][col]=token;
System.out.print(data[row][col]+ " ");
col++;}
System.out.println();
row++;
col=0;
line = fileInput.readLine();
closeFile();
catch(IOException ioException) {
JOptionPane.showMessageDialog(this,"Error reading File", "Error 5: ",JOptionPane.ERROR_MESSAGE);
closeFile();
System.exit(1);
}

Answer 1

Thanks for the quick reply.
Is there any way to check out the first token only, and if it's not double type skip to tne next line? In my source code, it seems to be checking every single token in the line and then move on the the next line. This is not the way I want.
Thanks in advance again.
try {
                String line = fileInput.readLine();
                while (line != null)
                    StringTokenizer st=new StringTokenizer(line);
                    while(st.hasMoreTokens())
                        String token=st.nextToken();
                        try
                            double temp=Double.parseDouble(token);
                            data[row][col]=token;
                            System.out.print(data[row][col]+ " ");
                            col++;
                        catch(NumberFormatException ex)
                  System.out.println();
                  row++;
                  col=0;
                  line = fileInput.readLine();
                }