每个类方法的Java回调函数

interface Callback {
    void onEvent(String message);
}

class MyClass {
    private Callback callback;

    public MyClass(Callback callback) {
        this.callback = callback;
    }

    public void myMethod() {
        // 执行一些操作
        callback.onEvent("Hello from MyClass!");
    }
}

class Main {
    public static void main(String[] args) {
        MyClass myClass = new MyClass(new Callback() {
            @Override
            public void onEvent(String message) {
                System.out.println("Callback received: " + message);
            }
        });

        myClass.myMethod();
    }
}