java - setconfig , setattribute and setheader cant be solved -


i'm developing anti theft application , connection http class.

i have errors in couldn't solve ((cannot resolve setconfig , setattribute , setheader)) should resolve ?

here code :

package com.example.fatooma.location;  /**  * created fatooma on 26/07/2017. */ import java.io.bufferedreader; import java.io.inputstreamreader;   import org.apache.http.httpresponse; import org.apache.http.httpstatus;  import org.apache.http.httpversion; import org.apache.http.client.config.requestconfig; import org.apache.http.client.methods.httpget; import org.apache.http.client.protocol.httpclientcontext; import org.apache.http.impl.client.closeablehttpclient; import org.apache.http.impl.client.httpclients; import com.example.fatooma.location.core;  public class httprmi {  static string url = "http://localhost/projectserver";  closeablehttpclient httpclient = httpclients.createdefault(); // request configuration can overridden @ request level. // take precedence on 1 set @ client level. requestconfig requestconfig = requestconfig.custom().setsockettimeout(5000).setconnecttimeout(5000).setconnectionrequesttimeout(5000).build(); httpget httpget = new httpget(url); httpget.setconfig(requestconfig); httpget.setheader("user-agent","mozilla/5.0 (x11; u; linux x86_64; en-us; rv:1.9.2.13) gecko/20101206 firefox/3.6.13"); // execution context can customized locally. httpclientcontext context = httpclientcontext.create(); // contextual attributes set local context level take // precedence on set @ client level. context.setattribute("http.protocol.version",httpversion.http_1_1); try {     // execute method     httpresponse response = httpclient.execute(httpget);     int statuscode = response.getstatusline().getstatuscode();     if (statuscode != httpstatus.sc_ok) {         throw new illegalstateexception("method failed: " + response.getstatusline());     }     bufferedreader br = new bufferedreader(new inputstreamreader((response.getentity().getcontent())));     stringbuffer buf = new stringbuffer();     string output;     while ((output = br.readline()) != null) {         buf.append(output);     }     content = buf.tostring(); } catch(exception e ) {     throw e; } }      httpclient.close()     }}


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