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Message:

Why we have to declare public to abstract talk method

Posted by J Chan on January 06, 2001 at 11:56 PM

Why we couldn't compile abstract class Animal if we don't
declare the method as public ?

D:\Training\Animal.java:3: The method void talk() declared in class Animal cannot override the method of the same signature declared in interface Talkative. The access modifier is made more restrictive.
abstract void talk();
^
1 error

interface Talkative {

void talk();
}

abstract class Animal implements Talkative {

abstract public void talk();
}

class Dog extends Animal {

public void talk() {
System.out.println("Woof!");
}
}

class Cat extends Animal {

public void talk() {
System.out.println("Meow.");
}
}

class Interrogator {

static void makeItTalk(Talkative subject) {
subject.talk();
}

Thanks.

J.

• Re: Why we have to declare public to abstract talk method js January 31, 2001 at 6:48 PM (0)