SFConnectionController controller = new SFConnectionController();
LoginResult loginResult = controller.login(username, password, securityToken);
Response response = controller.query('select Name, Email, Phone, MailingCity, MailingCountry from Contact', loginResult);
for(Record row: response.data.records){
string Name = row.getFieldValue('Name');
string Email = row.getFieldValue('Email');
string Phone = row.getFieldValue('Phone');
string MailingCity = row.getFieldValue('MailingCity');
string MailingCountry = row.getFieldValue('MailingCountry');
}

<apex:page controller="MultiSheetExcelGenerate" sidebar="false" showHeader="false" contentType="application/vnd.ms-excel#myfile.xls">
<c:multisheetexcelcomponent datamodel="{!dm}" />
</apex:page>

package com.androidsfdc.androidtocase;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLEncoder;

import javax.net.ssl.HttpsURLConnection;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class AndroidToCase extends Activity {
  /** Called when the activity is first created. */
  private static final String ORGID = "00D###0###0###G";

  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
      Button btn = (Button) findViewById(R.id.submit);

      btn.setOnClickListener(new View.OnClickListener() {

          public void onClick(View v) {
              try {
                  EditText name = (EditText) findViewById(R.id.contactName);
                  EditText email = (EditText) findViewById(R.id.email);
                  EditText phone = (EditText) findViewById(R.id.phone);
                  EditText subject = (EditText) findViewById(R.id.subject);
                  EditText description = (EditText) findViewById(R.id.description);
                  StringBuffer params = new StringBuffer();
                  params.append("orgid=" + URLEncoder.encode(ORGID, "UTF-8"));
                  params.append("&name="
                          + URLEncoder.encode(name.getText().toString(),
                                  "UTF-8"));
                  params.append("&email="
                          + URLEncoder.encode(email.getText().toString(),
                                  "UTF-8"));
                  params.append("&phone="
                          + URLEncoder.encode(phone.getText().toString(),
                                  "UTF-8"));
                  params.append("&subject="
                          + URLEncoder.encode(subject.getText().toString(),
                                  "UTF-8"));
                  params.append("&description="
                          + URLEncoder.encode(description.getText()
                                  .toString(), "UTF-8"));
                  String output = excutePost(
                          "https://www.salesforce.com/servlet/servlet.WebToCase?encoding=UTF-8",
                          params.toString());
                  name.setText("");
                  email.setText("");
                  phone.setText("");
                  subject.setText("");
                  description.setText("");
                  Toast.makeText(getBaseContext(), "Case is successfully Created!!!",
                          Toast.LENGTH_LONG).show();
                
              } catch (Exception ex) {
                  ex.printStackTrace();
              }
          }
      });
  }

  public static String excutePost(String targetURL, String urlParameters) {
      URL url;
      HttpsURLConnection connection = null;
      try {
          // Create connection
            url = new URL(targetURL);
          connection = (HttpsURLConnection) url.openConnection();
          connection.setRequestMethod("POST");
          connection.setRequestProperty("Content-Type",
                  "application/x-www-form-urlencoded");

          connection.setRequestProperty("Content-Length",
                  "" + Integer.toString(urlParameters.getBytes().length));
          connection.setRequestProperty("Content-Language", "en-US");

          connection.setUseCaches(false);
          connection.setDoInput(true);
          connection.setDoOutput(true);

          // Send request
            DataOutputStream wr = new DataOutputStream(
                  connection.getOutputStream());
          wr.writeBytes(urlParameters);
          wr.flush();
          wr.close();

          // Get Response
            InputStream is = connection.getInputStream();
          BufferedReader rd = new BufferedReader(new InputStreamReader(is));
          String line;
          StringBuffer response = new StringBuffer();
          while ((line = rd.readLine()) != null) {
              response.append(line);
              response.append('\r');
          }
          rd.close();
          return response.toString();

      } catch (Exception e) {

          e.printStackTrace();
          return null;

      } finally {

          if (connection != null) {
              connection.disconnect();
          }
      }
  }
}

<apex:page standardController="Case">
<apex:relatedList list="Childs__r"/>
</apex:page>

<apex:page standardController="Case">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.3/jquery.min.js"></script>

<script>
$(document).ready(function(){
$('#Childs a').attr('target','_blank');
});
</script>

<style>
.pbButton{
display:none;
}
.actionColumn{
display:none;
}
</style>

<Div id="Childs">
<apex:relatedList list="Childs__r"/>
</Div>

</apex:page>

<apex:page standardController="Case">
<apex:sectionHeader title="http://www.aslambari.com" subtitle="Related List Example"/>
<apex:pageBlock>
<apex:pageBlockTable value="{!Case.Childs__r}" var="child">
  <apex:column headervalue="Name"><apex:outputLink value="/{!child.id}">{!child.name}</apex:outputLink></apex:column>
  <apex:column value="{!child.detail__c}"/>
  <apex:column value="{!child.is_active__c}"/>
  <apex:column value="{!child.createddate}"/>
  <apex:column value="{!child.createdbyId}"/>
</apex:pageBlockTable>
</apex:pageBlock>
</apex:page>