print alphabets using stars, Java

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//'main' method must be in a class 'Rextester'.
//Compiler version 1.8.0_111

import java.util.Scanner;

class Rextester
{  
    public static void main(String[] nick)
    {
            Scanner in=new Scanner(System.in);
            int n;
             n=in.nextInt();
          for(int i=1;i<=n;i++)
          {
                System.out.print("*");
                for(int j=1;j<i;j++)
                    System.out.print("  ");
                     System.out.println("*");
           }
           
          for(int i=2;i<=n;i++)
          {
                System.out.print("*");
                for(int j=1;j<=n-i;j++)
                    System.out.print("   ");
                     System.out.println("*");
           }
           for(int i=1;i<=n;i++)
               System.out.println("*");
             System.out.println("\n");
           for(int i=1;i<=n;i++)
          {
                System.out.print("*");
                for(int j=1;j<i;j++)
                    System.out.print("  ");
                     System.out.println("*");
           }
           
          for(int i=2;i<=n;i++)
          {
                System.out.print("*");
                for(int j=1;j<=n-i;j++)
                    System.out.print("   ");
                     System.out.println("*");
           }
           for(int i=1;i<=n;i++)
          {
                System.out.print("*");
                for(int j=1;j<=i;j++)
                    System.out.print("  ");
                     System.out.println("*");
           }
           
          for(int i=2;i<=n;i++)
          {
                System.out.print("*");
                for(int j=1;j<=n-i;j++)
                    System.out.print("   ");
                     System.out.println("*");
           }
                    System.out.println("\n");
           for(int i=1;i<=n;i++)
          {
                System.out.print("*");
                for(int j=1;j<i;j++)
                    System.out.print("  ");
                     System.out.println("*");
           }
           
          for(int i=2;i<=n;i++)
          {
                System.out.print("*");
                for(int j=1;j<=n-i;j++)
                    System.out.print("   ");
                     System.out.println("*");
           }
           for(int i=1;i<=n;i++)
               System.out.println("*");
    }
         
}

[ - ] Show input
Compilation time: 0.83 sec, absolute running time: 0.19 sec, cpu time: 0.23 sec, memory peak: 20 Mb, absolute service time: 1,03 sec