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为什么Java有瞬态字段？

嗨，我在声纳皮棉中收到此错误：

“Serializable”类中的字段应该是瞬态的或可序列化的

1. 私人最终条件 notEmpty = lock.newCondition();
2. 私人最终条件 notFull = lock.newCondition();
3. 私有比较器比较器；

我的代码是：

package com.cgi.atom.common.priorityexec;

/**
 * Created by nageswararao.vesepog on 8/24/2016.
 */

import java.util.*;
import java.util.concurrent.BlockingDeque;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.ReentrantLock;

public class PriorityBlockingDeque<E>
        extends AbstractQueue<E>
        implements BlockingDeque<E>, java.io.Serializable {

    /*
     * Implemented as a navigable set protected by a
     * single lock and using conditions to manage blocking.
     */

    private final int capacity;

    private final LinkedList<E> list;
    /**
     * Main lock guarding all access
     */
    private final ReentrantLock …