Java

2d array problem

Please support our Java advertiser: Programming Forums - DaniWeb Sister Site

•

Join Date: Mar 2007

Posts: 159

Reputation: mrjoli021 is an unknown quantity at this point

Solved Threads: 0

mrjoli021

Offline

Junior Poster

2d array problem

Nov 13th, 2008

What is wrong with this code. when it do system.out.println(matrix[0][0] i should get 1 char i get the entire line.

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
int r =Integer.parseInt(line.substring(0));
            int c = 10;
            String[][] matrix = new String[r][c];
 
        while (line !=null)
        {
            for(int i =0; i< r; i++)
            {
 
                for (int j =0; j< c; j++)
                {
                    line = br.readLine();
                    matrix[i][j] = line;
                }
            }
        }
 
            System.out.print(matrix[0][1]);
        }
int r =Integer.parseInt(line.substring(0));
            int c = 10;
            String[][] matrix = new String[r][c];
            
        while (line !=null)
        {
            for(int i =0; i< r; i++)
            {
             
                for (int j =0; j< c; j++)
                {
                    line = br.readLine();
                    matrix[i][j] = line;
                }
            }
        }
        
            System.out.print(matrix[0][1]);
        }

•

Join Date: May 2007

Posts: 4,505

Reputation: Ezzaral has a brilliant future

Solved Threads: 521

Ezzaral

Offline

Industrious Poster

Re: 2d array problem

Nov 13th, 2008

Well, go figure:

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
line = br.readLine();
matrix[i][j] = line;
line = br.readLine();
matrix[i][j] = line;

If you put the whole line in there, that's what you're going to get.

•

Join Date: Mar 2007

Posts: 159

Reputation: mrjoli021 is an unknown quantity at this point

Solved Threads: 0

mrjoli021

Offline

Junior Poster

Re: 2d array problem

Nov 13th, 2008

so what function can i use to read in a single char at a time?

•

Join Date: Jan 2007

Posts: 706

Reputation: stultuske is a jewel in the rough

Solved Threads: 84

stultuske

Offline

Master Poster

Re: 2d array problem

Nov 14th, 2008

read the line, and within the loop, you just extract a single char from that line.
that's the one you put in your array, next loop, you read the next char and so on, till you've reached the end of the line