public class InheritTst
{  public static void main(String args[])
   {  B1 b = new B1("Test");
   }
}

class A1
{  A1() { this("1", "2"); }
   A1(String s, String t) { this(s+t); }
   A1(String s) { System.out.println(s); }
}

class B1 extends A1
{  B1(String s) { System.out.println(s); }
   B1(String s, String t) {this(t+s+"3"); }
   B1() { super("4"); }
}