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public static <E,T> Map<E,T> deepCopy(Map<E,T> src) {
try {
ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(byteOut);
out.writeObject(src);
ByteArrayInputStream byteIn = new ByteArrayInputStream(byteOut.toByteArray());
ObjectInputStream in = new ObjectInputStream(byteIn);
@SuppressWarnings("unchecked")
Map<E,T> dest = (Map<E,T> ) in.readObject();
return dest;
} catch (Exception e) {
e.printStackTrace();
return new HashMap<E,T>();
}
}