Java Concept (Matrix Operation using java array 1)

package matrix;
import java.util.Scanner;

/**
    *
 * @author Adeniran Adetunji
 */
public class MatrixC {
 
    double [][]matrix;
 
    //Create Matrix of Row = x and Column=y
     double [][] createMatrix()
    {
        int x=0;
        int y=0;
        Scanner setMatrix = new Scanner (System.in);
        System.out.print("Enter Number of row(s)");
        x = setMatrix.nextInt();
        System.out.print("Enter Number of column(s)");
         y = setMatrix.nextInt();
        matrix = new double[x][y];
        initializeMatrix(matrix);
     
        return matrix;
     
      }
 
//create Column vector i.e matrix of 1 row
     double[][] createColumnVector()
     {
        final int x= 1;
        int y;
      Scanner columnNo = new Scanner (System.in);
      System.out.print("Enter Number of Column(s): ");
      y = columnNo.nextInt();
   
      matrix=new double [x][y];
      initializeMatrix(matrix);
   
      return matrix;
     }
   
//create Row vector i.e. matrix of 1 column
     double [][] createRowVector()
     {
         final int y= 1;
        int x;
      Scanner columnNo = new Scanner (System.in);
      System.out.print("Enter Number of Row(s): ");
      x = columnNo.nextInt();
   
      matrix=new double [x][y];
      initializeMatrix(matrix);
   
      return matrix;
     }
   
     void displayMatrix(double[][]matrix1)
     {
         for(int i=0; i<matrix1.length; i++)
         {
             for(int k=0; k<matrix1[i].length; k++)
             {
                 System.out.printf("%-10.1f", matrix1[i][k]);
             }
             System.out.println("");
         }
       
     }
   
   
    //Initialize matrix of row i and column K with each element initialy equal to zero

    void initializeMatrix(double [][]matrix)
    {
        for (int i=0; i<matrix.length; i++)
        {
            for(int k=0; k<matrix[i].length; k++)
            {
                matrix[i][k]=0.0;
            }
        }
    }
 
//Update matrix or enter matrix elements

    void enterMatrixElement(double[][]matrix)
    {
        for(int i=0; i<matrix.length; i++)
        {
            for(int k = 0; k<matrix[i].length; k++)
            {
                Scanner input_matrix_element = new Scanner (System.in);
                System.out.print("Enter element in "+ "row:"+" "+ (i+1)+" "+ "column :"+(k+1));
                System.out.print("==>");
                matrix[i][k]= input_matrix_element.nextInt();
            }
        }
    }

=======================================================================

/*

 * To change this license header, choose License Headers in Project Properties.

 * To change this template file, choose Tools | Templates

 * and open the template in the editor.

 */

package matrix;

/**

 *

 * @author DELL

 */

public class Matrix {

    /**

     * @param args the command line arguments

     */

    public static void main(String[] args) 

    {

        MatrixC myMatrix = new MatrixC();

        System.out.println("Creating and Intializing Matrix");

        System.out.println("================================");

       double[][] matrixA = myMatrix.createMatrix();

       

       System.out.println("Entering elements in matrix indexes");

       System.out.println("===================================");

        myMatrix.enterMatrixElement(matrixA);

      

       System.out.println("Displaying Matrix Elements");

       System.out.println("==========================");

      

        myMatrix.displayMatrix(matrixA);

       

        System.out.println("Creating and initializing Column Vector");

        System.out.println("=======================================");

                           

       double[][]matrixB=myMatrix.createColumnVector();

       

       System.out.println("Entering elements in the Column Vector");

       System.out.println("======================================");

                           

       myMatrix.enterMatrixElement(matrixB);

       

       System.out.println("Displaying the elements in the column vector");

       System.out.println("============================================");

        myMatrix.displayMatrix(matrixB);

         

        

       System.out.println("Creating and Initializing row vector");

       System.out.println("======================================");

       double[][]matrixC =myMatrix.createRowVector();

        

        System.out.println("");

        

       System.out.println("Entering elements in the row Vector");

       System.out.println("===================================");

        myMatrix.enterMatrixElement(matrixC);

        

         System.out.println("Displaying elements of the Column Vector");

         System.out.println("=========================================");

        myMatrix.displayMatrix(matrixC);

        

        

    }

        

        

        

    }

OUTUPUT

run:

Creating and Initializing Matrix

================================

Enter Number of row(s)3

Enter Number of column(s)4

Entering elements in matrix indexes

===================================

Enter element in row: 1 column :1==>3

Enter element in row: 1 column :2==>12

Enter element in row: 1 column :3==>4

Enter element in row: 1 column :4==>12

Enter element in row: 2 column :1==>4

Enter element in row: 2 column :2==>5

Enter element in row: 2 column :3==>12

Enter element in row: 2 column :4==>2

Enter element in row: 3 column :1==>3

Enter element in row: 3 column :2==>4

Enter element in row: 3 column :3==>2

Enter element in row: 3 column :4==>2

Displaying Matrix Elements

==========================

3.0       12.0      4.0       12.0      

4.0       5.0       12.0      2.0       

3.0       4.0       2.0       2.0       

Creating and initializing Column Vector

=======================================

Enter Number of Column(s): 3

Entering elements in the Column Vector

======================================

Enter element in row: 1 column :1==>3

Enter element in row: 1 column :2==>3

Enter element in row: 1 column :3==>3

Displaying the elements in the column vector

============================================

3.0       3.0       3.0       

Creating and Initializing row vector

======================================

Enter Number of Row(s): 3

Entering elements in the row Vector

===================================

Enter element in row: 1 column :1==>33

Enter element in row: 2 column :1==>3

Enter element in row: 3 column :1==>33

Displaying elements of the Column Vector

=========================================

33.0      

3.0       

33.0      

BUILD SUCCESSFUL (total time: 41 seconds)