Apps jdbc connection worked localhost but Not worked DEV site

[krishnaveni]

am successfully finished login form in android using mysql connection via jdbc in java...its successfully worked in my localhost...but development site its not worked...the following error is displyed.

java.sql.SQLException: Unable to connect to any hosts due to exception: java.net.SocketException: java.net.ConnectException: Connection timed out: connect

** BEGIN NESTED EXCEPTION ** 

java.net.SocketException
MESSAGE: java.net.ConnectException: Connection timed out: connect

STACKTRACE:

java.net.SocketException: java.net.ConnectException: Connection timed out: connect
    at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:143)
    at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:225)
    at com.mysql.jdbc.Connection.createNewIO(Connection.java:1805)
    at com.mysql.jdbc.Connection.<init>(Connection.java:452)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:411)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at com.retrieve.retrieve.main(retrieve.java:15)


** END NESTED EXCEPTION **


    at com.mysql.jdbc.Connection.createNewIO(Connection.java:1875)
    at com.mysql.jdbc.Connection.<init>(Connection.java:452)
    at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:411)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at com.retrieve.retrieve.main(retrieve.java:15)

why dis error is occurred.give me some solutions. if am running localhost means my sql query is

String user = name.getText();
          String strpass = pass.getText();
          try {
            Class.forName("com.mysql.jdbc.Driver");
          } catch (ClassNotFoundException ex) {
              Logger.getLogger(jdbclogin.class.getName()).log(Level.SEVERE, null, ex);
          }
          try {
              Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/login", "root", "");
              Statement st = con.createStatement();
              String query = "SELECT password FROM customers where login='"+user+"'";
              System.out.println(query);
              ResultSet rs = st.executeQuery(query);

if am running development site means my query is:

String user = name.getText();
          String strpass = pass.getText();
          try {
             Class.forName("com.mysql.jdbc.Driver");
          } catch (ClassNotFoundException ex) {
              Logger.getLogger(jdbclogin.class.getName()).log(Level.SEVERE, null, ex);
          }
          try {
              Connection con = DriverManager.getConnection("jdbc:mysql://dev.sasas.com:3306/login", "asas", "sass");
              Statement st = con.createStatement();
              String query = "SELECT password FROM xcart_customers where login='"+user+"'";
              System.out.println(query);
              ResultSet rs = st.executeQuery(query);

dis development site username,password,database name and url all r correct only...then why dis error is occured....give me solutions...