android - Unable to Create EndPoint with RxJava and Reterofit2 -

i following github link consume api using reterofit , rxjava while changing type call observer in interface class getting error message.

type 'java.util.observable' doesnot have type parameters

apiclient:

public class apiclient {     public static final string base_url = "*********";     private static retrofit retrofit = null;     public static retrofit getclient() {         final okhttpclient okhttpclient = new okhttpclient.builder()                 .readtimeout(60, timeunit.seconds)                 .connecttimeout(60, timeunit.seconds)                 .build();         if (retrofit==null) {             gson gson = new gsonbuilder()                     .setlenient()                     .create();             retrofit = new retrofit.builder()                     .addcalladapterfactory(rxjava2calladapterfactory.create())                     .baseurl(base_url)                     .client(okhttpclient)                     .addconverterfactory(gsonconverterfactory.create(gson))                     .build();         }         return retrofit;     }   } 

apiinterface

public interface apiinterface {     @formurlencoded     @post("user/get_user")     observable<userresponse> getusers(@field("email") string email, @field("password") string password);  } 

userresponse:

public class userresponse {      private list<user> result;     private string status_message;     private int status_code;      public int getstatus_code() {         return status_code;     }      public void setstatus_code(int status_code) {         this.status_code = status_code;     }      public list<user> getresult() {         return result;     }      public void setresult(list<user> result) {         this.result = result;     }      public string getstatus_message() {         return status_message;     }      public void setstatus_message(string status_message) {         this.status_message = status_message;     } } 

dependencies:

compile 'io.reactivex.rxjava2:rxjava:2.0.1'     compile 'io.reactivex.rxjava2:rxandroid:2.0.1'     compile 'com.jakewharton.retrofit:retrofit2-rxjava2-adapter:1.0.0' 

change import java.util.observable; in code import io.reactivex.observable;