I think you are creating an array of wrong bounds- instead of int [][] list=new int [2][mo] there should be int [][] list=new int [mo][2]; ,because for every module you have marks of first and second assignment, am I right?

   String result="";//this variable for the last line which print the result
   for (int i = 0; i < row; i++) {
     result=result+"Data Array "+i+" :";
       for (int j = 0; j < column; j++) {
         System.out.println("Row [" + i + "]:  Column " + j + " :");
         matrix[i][j] = sc.nextInt();
         result=result+matrix[i][j]+", ";

        }

    }
System.out.println(result);////for the final result

Show the code you’ve tried so we can give you hints to point you in the right direction or to help explain any misconceptions you have.

import java.util.Scanner; public class KboatDDARowColMajor { public static void main(String args[]) { Scanner in = new Scanner(System.in); System.out.print("Enter number of rows: "); int rows = in.nextInt(); System.out.print("Enter number of columns: "); int cols = in.nextInt(); int arr[][] = new int[rows][cols]; System.out.println("Enter the 2D array:"); for (int i = 0; i < rows; i++) { System.out.println("Enter elements of row " + (i + 1)); for (int j = 0; j < cols; j++) { arr[i][j] = in.nextInt(); } } System.out.println("Input array :"); for (int i = 0; i < rows; i++) { for (int j = 0; j < cols; j++) { System.out.print(arr[i][j] + "\t"); } System.out.println(); } System.out.println("Array in row major form:"); for (int i = 0; i < rows; i++) { for (int j = 0; j < cols; j++) { System.out.print(arr[i][j] + " "); } } System.out.println(); System.out.println("Array in column major form:"); for (int i = 0; i < cols; i++) { for (int j = 0; j < rows; j++) { System.out.print(arr[j][i] + " "); } } } }

You have to add a new line to your output, when switching to next row:

public static void main(String[] args) {

    Scanner input = new Scanner(System.in);
    StringBuilder output = new StringBuilder();


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

    System.out.print("Enter the number of rows: ");
    int row = input.nextInt();
    System.out.print("Enter the number of columns: ");
    int columns = input.nextInt();

    int[][] nums = new int[row][columns];

    for (int i = 0; i < row; i++) {
        for (int j = 0; j < columns; j++) {
            System.out.print("Number " + (j + 1) + ": ");
            nums[i][j] = input.nextInt();
            output.append(" ").append(nums[i][j]);
        }
        output.append("\n");
        System.out.println("\n");

    }

    System.out.println(output);

}