How no-argument constructor output of printf content

Such as the title , but it may point clearly , see the following procedure , and I want class A constructor A of the contents of the output is displayed, I do not know how to operate, please help !

[code=c]class A
  {
  		int j;
  		public A()
  		{
  			System.out.printf("abc\n");	//要将这一部分输出怎么办呢？
  		}
  		
  		public A(int i)
  		{
  				j = 20;			
  		}
  }
  
  public class Test
  {
  	public static void main(String[] args)	
  	{
  			A aa = new A(20);
  			A bb = new A();
  			System.out.printf("%d\n", aa.j);
  			
  	}
  }

[/ code]
------ Solution --------------------------------- -----------
you do not have the output of the a bb = new A ();
------ Solution ------- -------------------------------------
has been output , ah , the landlord
- ----- For reference only ---------------------------------------
I was trying to "abc" output.
------ For reference only -------------------------------------- -
has been output , and that I did not see , thank you fudongrifdr.