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  1. #1
    peek_a_boo is offline Member
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    Default Creating 2D array from all user input

    Hello,

    I'm working on a project and I need to write a program that asks the user for the 2 dimensions, and then the program asks the user to enter all the elements by row and column which I've successfully done but I can't figure out how to print out the finished matrix. Here's what I have so far:

    import java.util.Scanner;

    public class Num_1 {

    public static void main (String[] args) {

    Scanner scanner = new Scanner (System.in);


    int rows;

    int columns;

    System.out.println("Enter number of rows: ");

    rows = scanner.nextInt();

    System.out.println ("Now enter the number of columns: ");

    columns = scanner.nextInt();

    int [][] matrix = new int [rows] [columns];




    for (int i = 0; i < rows; i++) {

    for (int j = 0; j < columns; j++) {

    System.out.println("Enter the number for row " + i + " and column " + j + " : ");

    matrix [i][j] = scanner.nextInt();



    }




    }


    }


    }

  2. #2
    Norm's Avatar
    Norm is offline Moderator
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    Default Re: Creating 2D array from all user input

    how to print out the finished matrix.
    You could use a nested loop with the outer loop iterating through the rows and the inner loop thru the columns.
    Use the print method for each element on a row and use println to go to the next row when a row is finished.

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