Write a program to print the diagonal elements of 3X3 matrix .

class Dmatrix

{

 public static void main(String arg[])

 {

  int a[][]= new int[3][3];

  int i,j,k=0;

  for(i=0;i<3;i++)

  {

   for(j=0;j<3;j++)

   {                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

    a[i][j]=k;

     k++;

   }

  }

  for(i=0;i<3;i++)

  {

   for(j=0;j<3;j++)

    {

     System.out.print("  " +a[i][j]);

         

     }

     System.out.println("\n");

    }

System.out.println("digo. elment are ");

  for(i=0;i<3;i++)

  {

   for(j=0;j<3;j++)

    {

     if(i!=j)

     System.out.print(" ");

     else

     System.out.println(" "+a[i][j]);

     }

    }

 }

}