Help me to write the following

           1
          121
         12321
        1234321
       123454321

thanks

class Pyramid{
     public static void main(String[] args){
     int x = 5;  
     for(int i = 1; i <= x; i++) {  
     for(int j = 1; j <= x - i; j++)  
     System.out.print("   ");  
     for (int k = 1; k <=i; k++)  
     System.out.print((k>= 10) ?+ k : "  " + k); 
     for (int k = i-1; k >= 1; k--)  
     System.out.print((k >=10) ?+ k : "  " + k);  
     System.out.println();  
    }  
  }
}

i'm sorry if that more than 10 the pyramid become the right side... help me... thanks..

                           1
                        1  2  1
                     1  2  3  2  1
                  1  2  3  4  3  2  1
               1  2  3  4  5  4  3  2  1
            1  2  3  4  5  6  5  4  3  2  1
         1  2  3  4  5  6  7  6  5  4  3  2  1
      1  2  3  4  5  6  7  8  7  6  5  4  3  2  1
   1  2  3  4  5  6  7  8  9  8  7  6  5  4  3  2  1
1  2  3  4  5  6  7  8  910  9  8  7  6  5  4  3  2  1