java - I am getting an error on the test for some classes I wrote but I cant figure out what I did wrong? -

public class cellphone {      //reminder: protected fields can accessed directly     //          class extends 1     protected string ownername;         public cellphone(string ownernamein) {         //initialize ownername ownernamein ownername = ownernamein;      }      public string receivecall(cellphone sender) {         //return string of form:         //    receiver's name " receiving call " sender's name         //you can implement using receiver invoke receivecall         //  while passing in current phone          string receivecall = sender.ownername + " receiving call " + ownername;         return receivecall;      }      public string call(cellphone receiver) {         //return string using receiver invoke receivecall          //  while passing in current phone          return this.receivecall(receiver);       } }   package cellphones;  public class textmessagingphone extends cellphone {     //number of messages owner can send , receive     //reminder: private fields can't accessed class extends 1     private int availmessages;      public textmessagingphone(string owner) {         //initialize ownername owner , availmessage 15 invoking         //   two-parameter constructor of class.   this(owner,15);     }      public textmessagingphone(string owner, int messagelimit) {         //initialize ownername owner , availmessage messagelimit         //part of require invoking superclass constructor         // , setting new instance variable super(owner); availmessages = messagelimit;           }      public string receivetext(textmessagingphone sender, string message) {         //the owner receives message sender.          //decrease number of messages available receive          //return string of form:         //    owner's name " has received text " sender's name ":" message availmessages --;         string receivedtext = ownername + " has received text " + sender + ":" + message;          return receivedtext;       }      public string sendtext(textmessagingphone receiver, string message) {         //decrease number of messages available send          //return string using receiver invoke receivetext          //  while passing in current phone , message availmessages --;            string invokingreceivetext = receiver.receivetext(receiver, message);              return invokingreceivetext;     } }  package cellphones;  public class smartphone extends textmessagingphone {      public smartphone(string ownerin) {         //invoke super class' copy constructor , send owner          //note: there's nothing else since smartphone adds no         //      new fields.         super(ownerin);      }        public string displaypicture(string picturesubject) {         //return string of form:         //    owner's name " displaying picture of " picturesubject           string picture = ownername + " displaying picture of " + picturesubject;         return picture;     }       /*       * method overrides inherited receivecall method.      * smartphones "display" photo of caller.      */     public string receivecall(cellphone sender) {         //return string built from:         //    result of calling displaypicture sender's owner's name          //    concatenated dash , concatenated         //    result of invoking superclass' receivecall sender string call = this.displaypicture(ownername) + "-" + sender.ownername; return call;      }        public string receivepictureandtextmessage(             smartphone sender, string messagetext, string picdescription) {         //owner receives messagetext sender picdescription          //return string built from:         //    result of calling displaypicture picdescription          //    concatenated dash , concatenated         //    result of invoking receivetext method sender         //    , messagetext          string pictext = this.displaypicture(picdescription) + "-" + this.receivetext(sender,messagetext);         return pictext;     }        public string sendpictureandtextmessage(             smartphone receiver, string messagetext, string picdescription) {         //owner sends messagetext receiver picdescription          //return string built having receiver invoke         //   receivepictureandtextmessage method, sending in          //   current phone, messagetext, , picture description          return receiver.receivepictureandtextmessage(receiver, messagetext, picdescription);     } } 

the error getting second , third classes , says "received text [cellphones.textmessagingphone@842e3b]:what r u doing?> was:<... received text [cindy's text phone]:what r u doing?> ". know how fix this?

you need print textmessagingphone.ownername, rather textmessagingphone object itself. or can override tostring() method return ownername.