It took me while to understand how one require to retrieve generic object
from ClientResponse. I had an array of objects in Json format as a response of an REST api, which I was trying to deserialize it into List<CustomObject> refer below sample.
ClientResponse rsp = webresource.path(id.toString()).type(MediaType.APPLICATION_JSON).get(ClientResponse.class);
List<CustomObject> list = rsp.getEntity(new GenericType<List<CustomObject>>(CustomObject.class));
But I kept on getting following Error:
Caused by: org.codehaus.jackson.map.JsonMappingException: Can not deserialize instance of test.CustomObject out of START_ARRAY token
at [Source: sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@3488b1e6; line: 1, column: 1]
at org.codehaus.jackson.map.JsonMappingException.from(JsonMappingException.java:163)
Issue got solved with following way
ClientResponse rsp = webresource.path(id.toString()).type(MediaType.APPLICATION_JSON).get(ClientResponse.class);
List<CustomObject> list = rsp.getEntity(new GenericType<List<CustomObject>>(){});