title: how to call a java class method in javascript using ajax ?
body: <p>i have a java class :: </p>
  
  <pre><code>package MyPackage;
  
  import java.sql.Connection;
  import java.sql.DriverManager;
  import java.sql.ResultSet;
  import java.sql.SQLException;
  import java.sql.Statement;
  import java.util.ArrayList;
  import java.util.List;
  
  import net.sf.json.JSONArray;
  import net.sf.json.JSONObject;
  
  import com.google.gson.Gson;
  
  public class PopulateTextbox {
  
      Gson gson = new Gson();
      JSONObject obj = new JSONObject();
      JSONArray arr = new JSONArray();
      String temp1;
  
      String temp;
      List &lt;String&gt;rowValues = new ArrayList&lt;String&gt;();
      List &lt;Integer&gt;rowValues1 = new ArrayList&lt;Integer&gt;();
      String[] contactListNames;
      Connection con=null;
      Statement st=null;
      ResultSet rs=null;
  
  
      public String method(){
  
  
          try{
  
  
          String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
          Class.forName(driver);
  
          String db = "jdbc:odbc:Practice_Database";
          con = DriverManager.getConnection(db,"","");
  
          st = con.createStatement();
          String sql = "SELECT Emp_Name,ID,Email_Add FROM EmployeeSearch";
          rs = st.executeQuery(sql);
  
          while(rs.next()){
              obj.put("ID", rs.getInt("ID"));
              obj.put("Names",rs.getString("Emp_Name"));
              obj.put("Email", rs.getString("Email_Add"));
              arr.add(obj);
  
          }
          //obj.accumulate("ID",rowValues1);
  
          //obj.accumulate("Names",rowValues);
          temp1 = arr.toString();
          System.out.println(temp1);
  
     }catch(Exception e){System.out.println(e);}
      /*finally{
          try {
                  if(con!=null)con.close();
              } catch (SQLException e) {
  
                  e.printStackTrace();
              }
          try {
              if(rs!=null)rs.close();
          } catch (SQLException e) {
  
              e.printStackTrace();
          }try {
              if(st!=null)st.close();
  
          } catch (SQLException e) {
  
              e.printStackTrace();
          }
  
  
      }*/
          return temp1;
  
      }
      public static void main(String args[])
      {
          PopulateTextbox obj = new PopulateTextbox();
          String temp1= obj.method();
  
  
      }
  }
  </code></pre>
  
  <p>This is returning me a Json array. Now i want to call method() of this class in JavaScript again and again to get new values as i update my database. I have a data grid which is working fine as the page loads for the first time with a set of values in this json array. But how to refresh data using Ajax. Or how to call the method() using Ajax so that data gets refreshed when i click on a button on the page. The code where i am calling this method in java-script is :: </p>
  
  <pre><code>&lt;%
  
      String temp1;
      PopulateTextbox obj = new PopulateTextbox();
      temp1 = obj.method();
      %&gt;
  </code></pre>
  
  <p>i am getting problem in retrieving new set of values in temp1 through a Ajax call to the server . please help ? Thanks. </p>