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

well said dandabani