# How to read a Matrix from user in Java?

Given task is to read a matrix from the user. The size and number of elements of matrices are to be read from the keyboard.

## Recommended: Please try your approach on {IDE} first, before moving on to the solution.

 // Java program to read a matrix from user    import java.util.Scanner;    public class MatrixFromUser {        // Function to read matrix     public static void readMatrixByUser()     {         int m, n, i, j;         Scanner in = null;         try {             in = new Scanner(System.in);             System.out.println("Enter the number "                                + "of rows of the matrix");             m = in.nextInt();             System.out.println("Enter the number "                                + "of columns of the matrix");             n = in.nextInt();                // Declare the matrix             int first[][] = new int[m][n];                // Read the matrix values             System.out.println("Enter the elements of the matrix");             for (i = 0; i < m; i++)                 for (j = 0; j < n; j++)                     first[i][j] = in.nextInt();                // Display the elements of the matrix             System.out.println("Elements of the matrix are");             for (i = 0; i < m; i++) {                 for (j = 0; j < n; j++)                     System.out.print(first[i][j] + "  ");                 System.out.println();             }         }         catch (Exception e) {         }         finally {             in.close();         }     }        // Driver code     public static void main(String[] args)     {         readMatrixByUser();     } }

Output:

Enter the number of rows of the matrix 2
Enter the number of columns of the matrix 2
Enter the elements of the matrix
1
2
3
4
Elements of the matrix are
1 2
3 4

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