When Constructors Are Called
In a class hierarchy, constructors are called in order of derivation, from superclass to subclass.
The following program illustrates when constructors are executed:
class A {
A() {
System.out.println("Inside A's constructor.");
}
}
// Create a subclass by extending class A.
class B extends A {
B() {
System.out.println("Inside B's constructor.");
}
}
// Create another subclass by extending B.
class C extends B {
C() {
System.out.println("Inside C's constructor.");
}
}
public class Main{
public static void main(String args[]) {
C c = new C();
}
}
The output from this program is shown here:
Inside A's constructor.
Inside B's constructor.
Inside C's constructor.