// INHERIT5: using INHERIT4
// a little bit more on class hierarchy

// You may access inherited variables (both instance and class) as long as the 
// variables are VISIBLE.

// What makes a variable visible? The instance or class variable is
// modified as with no modifier, $public$, or $protected$.

public class inherit5 {
    public static void main(String args[]) {

	// From class $Data121$, access a variety of inherited class
	// variables. Note that $Data121$ does not have $Data11$ as a 
	// superclass.

	System.out.println(Data121.a121);   // Output: 121
	// System.out.println(Data121.a11); // this won't work!
	System.out.println(Data121.a12);    // Output: 12
	System.out.println(Data121.a1);     // Output: 1

    }
}

class Data1                  { static int a1=1;    }
class Data11  extends Data1  { static int a11=11;  }
class Data12  extends Data1  { static int a12=12;  }
class Data121 extends Data12 { static int a121=121;}