[hardwired]

This

Code:

System.out.println( accs[0].Print() );

is calling a no-argument method Print.
Your Account class Print method takes a String argument. Unless it has a no-argument Print method you should get a compile error.
This

Code:

Account@190d11

looks like the hex address of the actual object in memory which you would get if you did something like this:

Code:

System.out.println(accs[0]);