如何使用多态性在没有公共基类的对象上执行命令？

// 定义命令接口
interface Command {
    void execute();
}

// 定义对象A
class ObjectA {
    void doSomething() {
        System.out.println("ObjectA is doing something.");
    }
}

// 实现命令接口的对象A的命令
class ObjectACommand implements Command {
    private ObjectA objectA;

    ObjectACommand(ObjectA objectA) {
        this.objectA = objectA;
    }

    @Override
    public void execute() {
        objectA.doSomething();
    }
}

// 定义对象B
class ObjectB {
    void doSomething() {
        System.out.println("ObjectB is doing something.");
    }
}

// 实现命令接口的对象B的命令
class ObjectBCommand implements Command {
    private ObjectB objectB;

    ObjectBCommand(ObjectB objectB) {
        this.objectB = objectB;
    }

    @Override
    public void execute() {
        objectB.doSomething();
    }
}

// 客户端代码
public class Main {
    public static void main(String[] args) {
        ObjectA objectA = new ObjectA();
        ObjectB objectB = new ObjectB();

        Command command1 = new ObjectACommand(objectA);
        Command command2 = new ObjectBCommand(objectB);

        // 执行命令
        command1.execute();
        command2.execute();
    }
}