📄 animal.java
字号:
class Animal
{
int weight, height;
void eat()
{
System.out.println("eat");
}
void sleep()
{
System.out.println("sleep");
}
void breath()
{
System.out.println("breath");
}
}
class Fish extends Animal
{
void breath()
{
System.out.println("fish breath");
}
void eat()
{
System.out.println("fish eat");
}
}
class Integration
{
public static void main(String[]args)
{
Animal an = new Animal();
Fish fish = new Fish();
an.eat();
fish.eat();
}
}
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