- Save error: Unable to perform save on all files: com.salesforce.ide.api.metadata.types.Metadata$JaxbAccessorF_fullName cannot be
cast to com.sun.xml.internal.bind.v2.runtime.reflect.Accessor

I am Java Developer Can I develop application on force.com using Java if yes how to get started ?

Please help 

Thanks 

- Save error: Unable to perform save on all files: com.salesforce.ide.api.metadata.types.Metadata$JaxbAccessorF_fullName cannot be
cast to com.sun.xml.internal.bind.v2.runtime.reflect.Accessor