java - 如何反序列化synchronizedMap和synchronizedList？

Question

这可能只是一个语法问题(而且我无法找到它；)

以下是要序列化(反序列化)的集合:

private Map<String, Terminal> terminals = Collections.synchronizedMap(new HashMap<String, Terminal>());
private List<Host> hosts = Collections.synchronizedList(new ArrayList<Host>());

这里进行序列化:

ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream("blah.dmp"));
out.writeObject(synchronizedMap);
out.writeObject(synchronizedList);

现在反序列化，这会抛出 ClassCastException(显然):

terminals = (HashMap<String, Terminal>) in.readObject();
hosts = (ArrayList<Hosts>) in.readObject();

但以下内容无法编译(以及我尝试过的许多其他变体):

terminals = (Collections.synchronizedMap(new HashMap<String, Terminal>())) in.readObject();
hosts = (Collections.synchronizedList(new ArrayList<Host>())) in.readObject();

Answer 1

这个怎么样？

terminals = (Map<String, Terminal>) in.readObject();
hosts = (List<Hosts>) in.readObject();

由 Collections.synchronizedMap/Collections.synchronizedList 包装的 Map 或 List 应该可以很好地反序列化，而无需需要重新包装它。