Java Runnable线程传参,实现让run访问参数

public interface MyRunnable extends Runnable {
   public MyRunnable setParam(String... param);
}

MyRunnable sendMessage = new MyRunnable() {
    String message;
    @Override
    public MyRunnable setParam(String... param) {
        message = param[0];
        return this;
    }
 
    @Override
    public void run() {
        sendMessage(message);
    }
};

public interface MyRunnable extends Runnable {
    public MyRunnable setParam(String param);
}

    public static void main(String[] args) {
        MyRunnable myRunnable = new MyRunnable() {
        // 新建接口，然后定义写实例变量；
            String string ;
            @Override
            public void run() {
                // 实现线程池的传参
                System.out.println(string);
            }
            @Override
            public MyRunnable setParam(String param) {
                string = param;
                return this;
            }
        };
        new Thread(myRunnable.setParam("aaa")).start();
    }