我使用这个简单的例子用Netbeans创建了一个jar文件。如何在另一个java文件中扩展jar并使用超类的方法?
class Animal {
void eat() {
System.out.println("animal : eat");
}
void anotherEat()
{
System.out.println("dog : eat from parents");
}
}
class Dog extends Animal {
void eat() {
System.out.println("dog : eat");
}
void sleep ()
{
}
void anotherEat() {
System.out.println("dog : eat from child");
// super.eat();
}
}
public class EatingContest {
public static void main(String[] args) {
Animal a = new Animal();
a.eat();
Dog d = new Dog();
d.eat();
//Animal e = new Dog();
//e.eat();
Dog f = new Dog();
f.anotherEat();
}
}