[4601] in java-interest
Re: calling non-default constructor for derived classes?
daemon@ATHENA.MIT.EDU (Amy Fowler)
Mon Jan 8 23:39:21 1996
Date: Mon, 8 Jan 1996 16:43:59 -0800
From: Amy.Fowler@Eng.Sun.COM (Amy Fowler)
To: java-interest@java.Eng.Sun.COM, brian@jjt.com
>>class BaseClass {
>> BaseClass(int whatever) {
>> // some stuff here
>> }
>>}
>>
>>class NewClass extends BaseClass {
>> NewClass(int whatever) {
>> // more stuff here
>> }
>>}
>>
>>How do I ensure that BaseClass(int) gets called when I initialize a
>>NewClass object as NewClass(int)?
Try:
NewClass(int whatever) {
super(whatever);
// more stuff here
}
(note that if you call the superclass's constructor from the
subclass's, it must be the first thing you do in the constructor)
Good Luck,
Amy Moore-Fowler
Java Products Group
Sun Microsystems, Inc.
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