Dictionary的add添加键值时是复制还是和原来的变量有关联？_(语言-java)

Question

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Dictionary<string, PluginsInfo> dic = new Dictionary<string, PluginsInfo>();
PluginsInfo pluginsInfo = new PluginsInfo();
pluginsInfo.Name = "2222";
dic.Add("2", pluginsInfo);
MessageBox.Show("对象本身： " + ReferenceEquals(pluginsInfo, dic["2"]).ToString());
MessageBox.Show("对象的参数： " + ReferenceEquals(pluginsInfo.Name, dic["2"].Name).ToString());

Dictionary<string, DataCell> dic2 = new Dictionary<string, DataCell>();
DataCell data = new DataCell();
data.DataValue = "www";
dic2.Add("2", data);
MessageBox.Show("对象本身： " + ReferenceEquals(data, dic2["2"]).ToString());
MessageBox.Show("对象的参数： " + ReferenceEquals(data.DataValue, dic2["2"].DataValue).ToString());