List深层复制

    @SuppressWarnings("unchecked")
    public static <T> List<T> deepCopy(List<T> srcList) {
        try {
            ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
            ObjectOutputStream out = new ObjectOutputStream(byteOut);
            out.writeObject(srcList);
            out.close();
            ByteArrayInputStream byteIn = new ByteArrayInputStream(byteOut.toByteArray());
            ObjectInputStream in = new ObjectInputStream(byteIn);
            return (List<T>) in.readObject();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

List<String> newList= deepCopy(oldList);