constructors
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October 29, 2008 at 10:18 AM
Hi friend,
Constructors cannot be inherited, basically a constructor is not a method.Constructors are used to give a valid state for an object at creation. That is, you cannot create a instance of a subclass using a constructor of one of it's superclasses. One of the main reasons is because you probably don't want to overide the superclasses constructor, which would be possible if they were inherited. By giving the developer the ability to override a superclasses constructor you would erode the encapsulation abilities of the language.
class A{
A(){
/*do something*/
}
}
class B extends A{
B(){
/*do something*/
}
public static void main(String[] args){
A a = new A();
B b = new A();//is'nt this confusing?
}
----------------------------------------
Visit for more information.
http://www.roseindia.net/java/beginners/constructoroverloading.shtml
Thanks.
Constructors cannot be inherited, basically a constructor is not a method.Constructors are used to give a valid state for an object at creation. That is, you cannot create a instance of a subclass using a constructor of one of it's superclasses. One of the main reasons is because you probably don't want to overide the superclasses constructor, which would be possible if they were inherited. By giving the developer the ability to override a superclasses constructor you would erode the encapsulation abilities of the language.
class A{
A(){
/*do something*/
}
}
class B extends A{
B(){
/*do something*/
}
public static void main(String[] args){
A a = new A();
B b = new A();//is'nt this confusing?
}
----------------------------------------
Visit for more information.
http://www.roseindia.net/java/beginners/constructoroverloading.shtml
Thanks.
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