I want to get instance of generic using reflection:
this.wrapperInstance = ((Class<WRAPPER>) ((ParameterizedType) (getClass().getGenericSuperclass())).getActualTypeArguments()[1]).newInstance();
but I get exception:
java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.reflect.ParameterizedType
Do not know where is problem, maybe someaone can help me? There is full class code:
public class XMLUtils<MODEL extends AbstractModel, WRAPPER extends WraperInterface<MODEL>> {
private WRAPPER wrapperInstance;
@SuppressWarnings("unchecked")
public XMLUtils() throws InstantiationException, IllegalAccessException {
this.wrapperInstance = ((Class<WRAPPER>) ((ParameterizedType) (getClass().getGenericSuperclass())).getActualTypeArguments()[1]).newInstance();
}
@SuppressWarnings("unchecked")
public List<MODEL> loadDataFromXML(String fileName) {
try {
File pajamuFile = new File(
UserDataLoader.INSTANCE.getCurrentUserFolder() + fileName);
JAXBContext context = JAXBContext.newInstance(wrapperInstance.getClass());
Unmarshaller um = context.createUnmarshaller();
WRAPPER wrapper = (WRAPPER) um.unmarshal(pajamuFile);
return wrapper.getDataList();
} catch (JAXBException e) {
e.printStackTrace();
return new ArrayList<MODEL>();
}
}
public void saveDataToXML(List<MODEL> dataList, String fileName) {
try {
File pajamuFile = new File(
UserDataLoader.INSTANCE.getCurrentUserFolder() + fileName);
JAXBContext context = JAXBContext.newInstance(wrapperInstance.getClass());
Marshaller m = context.createMarshaller();
WRAPPER wrapper = wrapperInstance;
wrapper.setDataList(dataList);
m.marshal(wrapper, pajamuFile);
} catch (JAXBException e) {
e.printStackTrace();
}
}
}
In google I find most such like situation but with spring, here I am not using spring, so maybe there is any clear solution for that what I want to do.
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