在Java子类中专门化方法参数

您需要向该类添加类型变量：

public abstract class Animal<F extends AnimalFeed> {  public abstract void eat(F somethingToEat);}

然后，您可以将子类声明为需要特定类型的

AnimalFeed

public class Bird extends Animal<BirdFeed> {  public void eat(BirdFeed somethingToEat) {}}public class Fish extends Animal<FishFeed> {  public void eat(FishFeed somethingToEat) {}}