oauth 2.0 - how to post in user's Streams using google plus api in java -

i want share information in google plus wall application.and trying moment.insert, getting 400 error . can me

@override   public jsonobject getgoogleplusadduseractivities(object token) {   token accesstoken = (token) token;   oauthservice service = createoauthserviceforgoogleplus();    oauthrequest request = new       oauthrequest(method.post,"https://www.googleapis.com/plus/v1/people/me/moments/vault");    request.addquerystringparameter("alt", "json");    service.signrequest(accesstoken, request);    jsonobject object=new jsonobject();    try {      object.put("kind","plus#moment");      object.put("type","http://schemas.google.com/addactivity");       jsonobject obj1=new jsonobject();      obj1.put("kind", "plus#itemscope");      obj1.put("url","https://plus.google.com/me");      obj1.put("description","sign claim , redeem credits while          shopping! ");      obj1.put("image","http://invite.png");      obj1.put("contenturl", "www.abcd.com");      obj1.put("thumbnailurl", "http://logo1_favicon.png");      object.putopt("target", obj1);;      }catch(exception ex) {           ex.printstacktrace();        }      request.addpayload(object.tostring());      request.addheader("content-type", "application/json");      system.out.println("request : "+request.getbodycontents());      response response = request.send();      string responsebody = response.getbody();      jsonobject googlejson = null;      try {       googlejson = new jsonobject(responsebody);      }      catch (jsonexception e) {       system.out.println("can not create json object");      } 

getting 400 error ?? can tell me..... wrong ..!!`

it isn't clear documentation, can't provide both target.url , other target metadata. opened bug 485 in issue tracking system - please go there , star issue make sure prioritize fix.

if remove target.url value , add target.id value, should work.

(as aside, not post in user's stream, post app activity in app moment vault. must manually share activity if choose.)