public class ExtendedTestProg {
public static void main (String [] args) {
class4 cls = new class4 ();
cls.print4();
cls.print3();
cls.print2();
cls.print1();
cls.print0();
}
public static class class0 {
static void print0 () {
System.out.println ("0");
}
}
public static class class1 extends class0 {
static void print1 () {
System.out.println ("1");
}
}
public static class class2 extends class1 {
static void print2 () {
System.out.println ("2");
}
}
public static class class3 extends class2 {
static void print3 () {
System.out.println ("3");
}
}
public static class class4 extends class3 {
static void print4 () {
System.out.println ("4");
}
}
}
