Need help in putting data into 2d array

Question

My input file :
1 , 2 , 1
2 , 2 , 1
3 , 3 , 1
4 , 2 , 2
2 , 3 , 2I'm stuck at:
while( reader.readLine() != null){
String Matrix[] = line.split(",");
}Means I only can read how many lines there. For 2d array, Matrix[i][j], is that when I count the line, the number of count will be the 'i'? How about 'j'? Am I need to count i and j before put the data into 2d array?
Do correct me if something wrong in:
while( reader.readLine() != null){
String Matrix[] = line.split(",");
} Thank you.

Answer 1

gtt0402 wrote:
while( reader.readLine() != null){
String Matrix[] = line.split(",");
How about:
ArrayList<String[]> rows = new ArrayList<String[]>();
while((line = reader.readLine()) != null) {
    rows.add(line.split(","));
}After the loop you have a list full of String arrays and you can convert it to a 2D String array if you wish.