java高並發寫入問題

List<String> list = new ArrayList<>();

使用ArrayList對數據進行賦值，會出現不同線程爭搶同一資源造成寫入失敗問題，會拋出異常“ConcurrentModificationException”

List<String> list = new Vector<>();

List<String> list = Collections.synchronizedList(new ArrayList<>());

List<String> list = new CopyOnWriteArrayList();

#CopyOnWriteArrayList代表在寫入數據時，源碼執行如下

/**
     * Appends the specified element to the end of this list.
     *
     * @param e element to be appended to this list
     * @return {@code true} (as specified by {@link Collection#add})
     */
    public boolean add(E e) {
        final ReentrantLock lock = this.lock;
        lock.lock();
        try {
            Object[] elements = getArray();
            int len = elements.length;
            Object[] newElements = Arrays.copyOf(elements, len + 1);
            newElements[len] = e;
            setArray(newElements);
            return true;
        } finally {
            lock.unlock();
        }
    }