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Thread: how to print matrix into file ?

  1. #1
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    Default how to print matrix into file ?

    Hi everyone,
    I want to know that how to write a matrix into text file?
    actually here i am trying to write a program which take no of rows and columns from user and also element of matrix and then i want to store that matrix into a separate file(abc.txt) and it's Transpose result
    want to store in separate file(xyz.txt). for this i am stuck in, i am not getting idea that how to save my matrix into a file...
    i have been searched regarding of my this problem but did not find any clue . let me post my code whatever effort i did to do...

    public class MyTransposeOfMatrix {
        public static void main(String[] args) throws FileNotFoundException {
     
     
            PrintWriter pw =new PrintWriter(
               "D:/SCJP Sun/netbeans/scjp practice/src/com/scjp/braintraser/xyz.txt");
            int rows, columns;
            System.out.println("Please enter no of rows:");
            Scanner sc=new Scanner(System.in);
            rows=sc.nextInt();
            System.out.println("Please enter no of columns:");
            columns=sc.nextInt();
            int matrix[][]=new int[rows][columns];
            int tmatrix[][]=new int[columns][rows];
            System.out.println("please enter element for matrix:");
            for(int i=0;i<rows;i++){
                for(int j=0;j<columns;j++){
                    matrix[i][j]=sc.nextInt();
                }
           }
     
            for(int i=0;i<rows;i++){
                for(int j=0; j<columns; j++){
                    tmatrix[i][j]=matrix[j][i];
                }
            }
            System.out.println("The Matrix is:");
            for(int i=0; i<rows; i++){
    //                pw.print(i);
                for(int j=0; j<columns; j++){
    //                System.out.print(matrix[i][j]+" ");
     
                    pw.print(matrix[i][j]); // here trying to print into file
                                            // but it's printing in single line
                }
                System.out.println("");
            }
            pw.flush();
            System.out.println("The Transpose of Matrix is: ");
            for(int i=0; i<columns; i++){
                for(int j=0; j<rows; j++){
                    System.out.print(tmatrix[i][j]+" ");
                }
                System.out.println("");
            }
        }
     
     
    }

    please help me.....
    thanks for your time to read this thread.


  2. #2
    Senior Member PhHein's Avatar
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    Default Re: how to print matrix into file ?

    Add a newline after the inner loop.

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