content: import java.util.Scanner;
  class multiplymatrix
  {
  public static void main(String args[])
  {
  int r1, r2,c1,c2,i,j,k,sum;
  Scanner in = new Scanner(System.in);
  System.out.println("Enter the number of rows of matrix1");
  r1 = in.nextInt();
  System.out.println("Enter the number columns of matrix 1");
  c1 = in.nextInt();
  System.out.println("Enter the number of rows of matrix2");
  r2 = in.nextInt();
  System.out.println("Enter the number of columns of matrix 2");
  c2 = in.nextInt();
  if(c1==r2)
  {
  int mat1[][] = new int[r1][c1]; 
  int mat2[][] = new int[r2][c2]; 
  int res[][] = new int[r1][c2];
  System.out.println("Enter the elements of matrix1");
  for(i=0;i<r1;i++)
  { 
  for(j=0;j<c1;j++)
  mat1[i][j] = in.nextInt();
  }
  System.out.println("Enter the elements of matrix2");
  for(i=0;i<r2;i++)
  { 
  for(j=0;j<c2;j++)
  mat2[i][j] = in.nextInt();
  }
  System.out.println("\n\noutput matrix:-");
  for(i=0;i<r1;i++)
  for(j=0;j<c2;j++)
  {
  sum=0;
  for(k=0;k<r2;k++)
  {
  sum +=mat1[i][k]*mat2[k][j] ;
  }
  res[i][j]=sum;
  }
  for(i=0;i<r1;i++)
  {
  for(j=0;j<c2;j++)
  System.out.print(res[i][j]+" ");
  System.out.println();
  }
  }
  else
  System.out.print("multipication not possible ");
  }
  }
  