A file contains the following Java code (exactly as it appears here, there is nothing else in the file). The file is compiled by the Java compiler and the resulting Java program is run.
class Zeta {
int i;
public Zeta() { i = 0; }
public void print_i() { System.out.print(" i " + i); }
}
class Sigma extends Zeta {
int k;
public Sigma() { super(); k = 2; }
public void print_k() { System.out.print(" k " + k); }
}
class Tau extends Sigma {
int m;
public Tau() { super(); m = 3; }
public void print_m() { System.out.print(" m " + m); }
}
public class Inherit {
public static void main(String argv[]) {
Sigma s = new Sigma(); Tau t = new Tau();
System.out.print("From s:"); s.print_i(); s.print_k();
System.out.println();
System.out.print("From t:"); t.print_i(); t.print_k(); t.print_m();
System.out.println();
}
}