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RHE P182

 
Greenhorn
Posts: 29
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quote:
if an explicit call to another constructor is made using this(..),then the superclass constructor is not called until the other constructor runs
I write a program to test it:
1.class Super {
2. Super(){System.out.println("Super");}
3.}
4.class Based extends Super {
5. Based() {this(20);System.out.println("Based");}
6. Based(int i) {
7. System.out.println(i);
8. }

9. public static void main(String []fred) {
10. Based ba1= new Based();
11. }
12.}
I expect the result is From the above quoted)
20
Based
Super
But the actual result is:

Super
20
Based
My question is why generate such result? and what does RHE mean by saying that?
kai
 
Ranch Hand
Posts: 54
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My friend, the other constructor in this case is called first, but remember! All constructors call the superclass constructor first. So in this case, the constructor with an int parameter is calling the super constructor before running itself. Try calling another type of super constructor from the constructor that takes in int as a parameter and you will end up running that constructor first.
*gasp*
-Khalid
[This message has been edited by Khalid Bou-Rabee (edited July 17, 2000).]
 
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