class Sixth_1
{
   public static void main(String args[])
{
      int space=-1,counter=4;

   for(int i=1;i<=4;i++)
 {
      if(i<=1)
       {
             for(int j=1;j<=counter;j++)
             System.out.print(j);
             for(int j=counter-1;j>=1;j--)
             System.out.print(j);
         }
    else
    {
           for(int j=1;j<=counter;j++)
           System.out.print(j);
           for(int j=1;j<=space;j++)
           System.out.print(" ");
           for(int j=counter;j>=1;j--)
           System.out.print(j);
           }
      System.out.println();
         counter--;
         space+=2;
       }
      }
   }

Here is a number pattern

class Pattern{
     public static void main(String args[]){
          for(int i=4;i>=1;i--){
           for(int j=1;j<=i;j++){
               System.out.print(j);
           }
           for(int j = 0; j < 5-i; j++){
               System.out.print("  ");
           }
           for(int j=i;j>=1;j--){
            System.out.print(j);
           }
            System.out.println();
       }
    }
}