Allow deserialisation of objects with private constructors

I like to keep the access level of all methods/constructors down to the minimum possible, but XStream forced to put public constructors on all the objects I wanted to serialize.

Is there any reason why getDeclaredConstructors and setAccessible isn't used instead of type.newInstance().

The only problem that I can see is a slight speed impact.

XStream stream = new XStream(new PureJavaReflectionProvider() {
public Object newInstance(Class type) {
try {
Constructor[] constructors = type.getDeclaredConstructors();
for(int i=0; i < constructors.length; i++) {
if(constructors[i].getParameterTypes().length == 0) {
if(!Modifier.isPublic(constructors[i].getModifiers()))

{ constructors[i].setAccessible(true); } return constructors[i].newInstance(new Object[0]); }

}
throw new ObjectAccessException("Cannot construct " + type.getName());
} catch (InstantiationException e)

{ throw new ObjectAccessException("Cannot construct " + type.getName(), e); } catch (IllegalAccessException e) { throw new ObjectAccessException("Cannot construct " + type.getName(), e); }

catch (InvocationTargetException e)

{ throw new ObjectAccessException("Cannot construct " + type.getName(), e); }

}
});