如何在java方法中传递不同的类？

class Animal {
    void makeSound() {
        System.out.println("Animal makes a sound");
    }
}

class Dog extends Animal {
    @Override
    void makeSound() {
        System.out.println("Dog barks");
    }
}

class Cat extends Animal {
    @Override
    void makeSound() {
        System.out.println("Cat meows");
    }
}

public class Main {
    public static void main(String[] args) {
        Animal animal1 = new Dog();
        Animal animal2 = new Cat();

        animal1.makeSound(); // 输出: Dog barks
        animal2.makeSound(); // 输出: Cat meows
    }
}

public class GenericExample {
    // 泛型方法，接受任何类型的参数
    public static <T> void print(T item) {
        System.out.println(item);
    }

    public static void main(String[] args) {
        print("Hello, World!"); // 输出: Hello, World!
        print(123); // 输出: 123
        print(3.14); // 输出: 3.14
    }
}

public class Main {
    public static void printString(String str) {
        System.out.println(str);
    }

    public static void main(String[] args) {
        // 错误示例
        // printString(123); // 编译错误，类型不匹配

        // 正确示例
        printString("Hello, World!"); // 输出: Hello, World!
    }
}

public class GenericClass<T> {
    private T item;
    private Class<T> clazz;

    public GenericClass(T item, Class<T> clazz) {
        this.item = item;
        this.clazz = clazz;
    }

    public T createInstance() throws Exception {
        return clazz.newInstance();
    }

    public static void main(String[] args) throws Exception {
        GenericClass<String> stringGenericClass = new GenericClass<>("Hello", String.class);
        String instance = stringGenericClass.createInstance();
        System.out.println(instance); // 输出: Hello
    }
}