Diamond String

/* Write a program to print a rectangle with a diamond shape gap exactly at the center of the
Rectangle, using an input string with odd number of characters, not exceeding 20.
For Example:-
INPUT                         :-         HAPPY-HAPPY
OUTPUT:
Enter a word of odd number of characters
HAPPY-HAPPY

HAPPY-HAPPY
HAPPY HAPPY
HAPP       APPY
HAP            PPY
HA                PY
H                     Y
HA                PY
HAP            PPY
HAPP       APPY
HAPPY HAPPY
HAPPY-HAPPY

Answer 1.*/
import java.io.*;
class Diamond_String
{
    //Data Member 
    public String word;
    public int len;
    public int spc;
  
    //Methods
    //Default Constructor
    Diamond_String()
    {
        word="";
        len=0;
        spc=0;
    }
      
        //Function to Input String
        public void Input()
        throws IOException
        {
            BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
            do
            {
                System.out.println("Enter a word of odd number of characters");
                word=br.readLine();
                word=word.toUpperCase();
                len=word.length();
                if(len>=20)
                System.out.println("Word is more than 20 characters.....Try again");
                if(len%2==0)
                System.out.println("Word is of even characters.....Try again");
            }
            while((len%2)==0);
        }
        
         //Function to Display first half of String
         public void Display1()
         {
            int x,i,j,k;
            spc=1; 
            x=(len/2)-1;
            k=0;
            System.out.println(word);
            for(i=1;i<=(len/2);i++)
            {
                //Printing left hand side
                for(j=0;j<=x;j++)
                    System.out.print(word.charAt(j));
                x--;
          
                //Printing spaces
                for(j=1;j<=spc;j++)
                    System.out.print(" ");
                spc+=2;
          
                //Printing right hand side
                for(j=k;j<(len/2);j++)
                    System.out.print(word.charAt(j));
                k++;
              
                System.out.println();
            }
        }
      
        //Function to Display second half of String
        public void Display2()
        {
            int i,j,k,x;
            spc-=4;
            k=(len/2)-2;
            x=1;
          
            for(i=1;i<=((len/2)-1);i++)
            {
                //Printing left hand side
                for(j=0;j<=x;j++)
                    System.out.print(word.charAt(j));
                x++;
                   
                //Printing spaces
                for(j=spc;j>=1;j--)
                    System.out.print(" ");
                spc-=2;
          
                //Printing right hand side
                for(j=k;j<(len/2);j++)
                    System.out.print(word.charAt(j));
                k--;
                System.out.println();
            }
          
            System.out.println(word);  
              
          
        }
    }
      

class Diamond_Example
{
    public void main()
    throws IOException
    {
        Diamond_String DS=new Diamond_String();
        DS.Input();
        DS.Display1();
        DS.Display2();
    }

}