OnJava8-Examples/housekeeping/OrderOfInitialization.java
2016-01-25 18:05:55 -08:00

41 lines
1005 B
Java

// housekeeping/OrderOfInitialization.java
// (c)2016 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
// Demonstrates initialization order
// When the constructor is called to create a
// Window object, you'll see a message:
class Window {
Window(int marker) {
System.out.println("Window(" + marker + ")");
}
}
class House {
Window w1 = new Window(1); // Before constructor
House() {
// Show that we're in the constructor:
System.out.println("House()");
w3 = new Window(33); // Reinitialize w3
}
Window w2 = new Window(2); // After constructor
void f() { System.out.println("f()"); }
Window w3 = new Window(3); // At end
}
public class OrderOfInitialization {
public static void main(String[] args) {
House h = new House();
h.f(); // Shows that construction is done
}
}
/* Output:
Window(1)
Window(2)
Window(3)
House()
Window(33)
f()
*/