泛型 例子

public interface Animal<T> {
public void eat(T t);
public T search(T t);
}


public class Dog<T> implements Animal<T>{

@Override
public void eat(T t) {
}

@Override
public T search(T t) {
return t;
}


}


public interface Food {

}


public class Meat implements Food{

}

public class Bread {

}


public class TestAnimal {

@Test
public void testEat1(){

Dog<Meat> dog = new Dog<Meat>();
dog.eat(new Meat());
dog.eat(new Bread());
Meat meat = new Meat();
Meat food = dog.search(meat);

}

@Test
public void testEat2(){

Dog<Food> dog = new Dog<Food>();
dog.eat(new Meat());
dog.eat(new Bread());
Meat meat = new Meat();
Food food = dog.search(meat);

}

@Test
public void testEat(){

Dog<Food> dog = new Dog<Food>();
dog.eat(new Meat());
dog.eat(new Bread());
Meat meat = new Meat();
Food food = dog.search(meat);

}
}