Asterisks and looping! surely you have a pritier solution than mine

[EscSequenceAlpha]

My task from my book was to output these:

*
**
***
****
*****
******
*******
********
*********
**********

**********
*********
********
*******
******
*****
****
***
**
*

**********
*********
********
*******
******
*****
****
***
**
*
*
**
***
****
*****
******
*******
********
*********
**********

I did this, with the following code

package chapter_v;

public class TrianglePrintingProgram_5_15 
{
	public static void main(String[] args)
	{
		String chain = "";
		
		for(int i = 1 ; i <= 10 ; i++)
		{
			chain = chain + "*";
			System.out.print(chain);
			if(chain.length() == i)
			{
				System.out.println();
			}
			
		}
		
		System.out.println();
		chain = "**********";
		for(int i = 10 ; i >= 1 ; i--)
		{
			System.out.print(chain);
			System.out.println();
			chain = chain.substring(0, chain.length() - 1);
		}
		
		System.out.println();
		chain = "**********";
		for(int i = 10 ; i >= 1 ; i--)
		{
			System.out.print(String.format("%10s", chain));
			System.out.println();
			chain = chain.substring(0, chain.length() - 1);
		}
		
		for(int i = 1 ; i <= 10 ; i++)
		{
			chain = chain + "*";
			System.out.print(String.format("%10s", chain));
			if(chain.length() == i)
			{
				System.out.println();
			}
			
		}
	}
}

I just dont like my solutions that much... I feel there are more elegant looping solutions that produce the same output. I was wondering how you professionals would do this (help me think like a programmer). common, I must of cheated with the formatting for the mirrored counterparts

[EscSequenceAlpha]

last two didnt represent the product after pasting should be mirrors