这段代码定义了一个名为 `ActionFailureException` 的异常类，它继承自 Java 的 `RuntimeException` 类。以下是对该类的注释：

```java
/*
 * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0 
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.micode.notes.gtask.exception;

// ActionFailureException类是一个未受检查的异常，用于表示操作失败的情况。
public class ActionFailureException extends RuntimeException {
    // 序列化ID，用于Java对象的序列化机制。
    private static final long serialVersionUID = 4425249765923293627L;

    // 无参构造函数，初始化ActionFailureException异常。
    public ActionFailureException() {
        super();
    }

    // 构造函数，接受一个字符串参数，用于提供异常的详细信息。
    public ActionFailureException(String paramString) {
        super(paramString);
    }

    // 构造函数，接受一个字符串参数和一个Throwable对象，用于提供异常的详细信息和原因。
    public ActionFailureException(String paramString, Throwable paramThrowable) {
        super(paramString, paramThrowable);
    }
}
```

