写一段java代码，按传入的class类型创建对象并赋值，然后返回对象，该对象继承自一个抽象类，

假设抽象类为Animal，代码如下：

public abstract class Animal {
    protected String name;

    public abstract void makeSound();
}

public class Dog extends Animal {
    public Dog(String name) {
        this.name = name;
    }

    @Override
    public void makeSound() {
        System.out.println("Woof!");
    }
}

public class Cat extends Animal {
    public Cat(String name) {
        this.name = name;
    }

    @Override
    public void makeSound() {
        System.out.println("Meow!");
    }
}

public class AnimalFactory {
    public static Animal createAnimal(String animalType, String name) {
        Animal animal = null;
        if (animalType.equalsIgnoreCase("dog")) {
            animal = new Dog(name);
        } else if (animalType.equalsIgnoreCase("cat")) {
            animal = new Cat(name);
        }
        return animal;
    }
}

使用方法：

Animal dog = AnimalFactory.createAnimal("dog", "Fido");
dog.makeSound(); // Output: Woof!

Animal cat = AnimalFactory.createAnimal("cat", "Whiskers");
cat.makeSound(); // Output: Meow!