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override and redifinition?

 
Greenhorn
Posts: 2
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Hello, i just have a problem with the following code:
class Animal{
static void doStuff(){
System.out.print("a");
}
}
class Dog extends Animal{
static void doStuff(){
System.out.print("b");
}
public static void main(String [] args){
Animal [] a={new Animal(),new Dog(),new Animal()};
for(int x =0;x<a.length;x++)
a[x].doStuff();
}
}
They say that the method doStuff() in class Dog is not an override,but a redifinition.Why?What's the difference between them?
 
best scout
Posts: 1294
Scala IntelliJ IDE Java
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Hi!

Polymorphism (i.e. overriding methods) only works for non-static methods. Therefore the doStuff() in class dog is just shadowing the one from the base class because of the name clash but besides the two methods aren't related like overridden methods.

Have a look at this for an explanation of polymorphism ;-)

Marco
 
ge weipeng
Greenhorn
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Thank you so much!
 
Marco Ehrentreich
best scout
Posts: 1294
Scala IntelliJ IDE Java
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You're welcome
 
Marshal
Posts: 73270
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And welcome to JavaRanch
 
Be reasonable. You can't destroy everything. Where would you sit? How would you read a tiny ad?
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