Java Program to multiply two matrices

17 thoughts on “Java Program to multiply two matrices”

1. Can i get the algorithms??

2. very good but i cant understand
   hence it is very bad
   hence proved

3. its very bad
   i only drink milk ,,i cannot understand

4. thats all ah ?????
   i expected some wat difficult …
   this is simple to my knowledge…
   so any doubt means call me… 😛

5. i agree with dandabani

6. i agree with dandabani

   well said dandabani

7. ennaku therinja thella kathi,,kuthu

8. ennaku therinja thella kathi,,kuthu

9. don muthu … i would lyk to ask abt the cosmopolitan of the analytical differentiation for the fundamental biology of catastrophic formula of dhanush and co. in 3 film ?????

10. The effort is highly appreciative.
    The following code is for those who don’t studied scanner classes yet (With algorithms) :

    package matrixmultiplication;
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;

    public class MatrixMultiplication {
    public static void main(String[] args) throws IOException {

    //BufferedReader to read text from character-InputStream and to buferring characters to provide efficient reading of characters
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

    String temp;
    System.out.println(“Insert rows in Matrix 1 >> “);
    //Reading the user input and copy into temp
    temp = br.readLine();

    //Assigning the value of temp to integer variable M1Row (After parsing string as signed decimal integer)
    int M1Row = Integer.parseInt(temp);

    System.out.println(“Insert columns in Matrix 1 >> “);
    temp = br.readLine();
    int M1Col = Integer.parseInt(temp);
    System.out.println(“Insert rows in Matrix 2 >> “);
    temp = br.readLine();
    int M2Row = Integer.parseInt(temp);
    System.out.println(“Insert columns in Matrix 2 >> “);
    temp = br.readLine();
    int M2Col = Integer.parseInt(temp);

    //Checking whether the multiplication is applicable
    if (M1Col == M2Row) {

    //Creating and initializing arrays to hold matrices
    int[][] Matrix1 = new int[M1Row][M1Col];
    int[][] Matrix2 = new int[M2Row][M2Col];
    int[][] Matrix3 = new int[M1Row][M2Col];

    //Inserting values in Martix1
    System.out.println(“Insert values in Matrix1:”);
    for (int i = 0; i < M1Row; i++) {
    for (int j = 0; j < M1Col; j++) {
    temp = br.readLine();
    Matrix1[i][j] = Integer.parseInt(temp);
    }
    }
    //Inserting values in Martix2
    System.out.println("Insert values in Matrix2:");
    for (int i = 0; i < M2Row; i++) {
    for (int j = 0; j < M2Col; j++) {
    temp = br.readLine();
    Matrix2[i][j] = Integer.parseInt(temp);
    }
    }

    //Multiplying two matrices
    System.out.println("Multiplying…");
    int temp1 = 0;
    for (int i = 0; i < M1Row; i++) {
    for (int j = 0; j < M2Col; j++) {
    for (int k = 0; k < M2Row; k++) {
    temp1 = temp1 + Matrix1[i][k] * Matrix2[k][j];
    }
    //Inserting elements in result matrix
    Matrix3[i][j] = temp1;
    temp1 = 0;
    }
    }

    //Display result of Multiplication
    System.out.println("Multiplication Completed!");
    System.out.println("……………………………………..");
    System.out.println("Result");
    for (int i = 0; i < M1Row; i++) {
    for (int j = 0; j < M2Col; j++) {
    System.out.print(Matrix3[i][j] + "\t");
    }
    System.out.println();
    }
    System.out.println("……………………………………..");
    } else {
    System.out.println("Multiplication could not be done!");
    System.out.println("Tip: Number of columns in a matrix1 should be equal to number of rows in matrix2 to perform multiplication.");
    }
    }
    }

    i hope this helps icse students. Please reply if this helped

11. Very useful…..you can get the more in detail at http://letusprogram.wordpress.com/2013/08/27/multiplication-of-two-matrix-in-java