Consuming REST API's using JAVA fails

Hello All,

I am new to ms dynamics. What i am trying to do is consume REST and SOAP API's using Java but fail to do so.

The error that i get for REST API's with this code https://code.msdn.microsoft.com/Consuming-CRM-REST-Service-ae24a15e#content  is , it does not generate the classes it is supposed to and gives the following error.

org.apache.olingo.odata2.api.ep.EntityProviderException: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[81,5]
Message: The declaration for the entity "ContentType" must end with '>'.

Can we not consuming services if i am on a trial account. Or where am i going wrong. 

Thank you