No postgresql username specified in the starter pack

Question

public class HelloPostgreSQLActivity extends Activity { TextView resultArea; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); resultArea = new TextView(this); resultArea.setText("Please wait."); setContentView(resultArea); new FetchSQL().execute(); } private class FetchSQL extends AsyncTask <Void,Void,String> { @Override protected String doInBackground(Void... params) { //TextView tv=(TextView)findViewById(R.id.text); String retval = ""; // String msg="connected"; try { Class.forName("org.postgresql.Driver"); // tv.setText(msg); } catch (ClassNotFoundException e) { e.printStackTrace(); retval = e.toString(); } String url = "jdbc:postgresql://192.168.1.92/postgres? user = postgres & password = admin"; Connection conn; try { DriverManager.setLoginTimeout(25); conn = DriverManager.getConnection(url); Statement st = conn.createStatement(); String sql; sql = "SELECT 1"; ResultSet rs = st.executeQuery(sql); while(rs.next()) { retval = rs.getString(1); } rs.close(); st.close(); conn.close(); } catch (SQLException e) { e.printStackTrace(); retval = e.toString(); } return retval; } @Override protected void onPostExecute(String value) { resultArea.setText(value); } } } 

I run my program in Android Emulator. My program has the following error.

 org.postgresql.util.PSQLException : FATAL: no PostgreSQL Username specified in startup packet. 

What is wrong with my program, what should I do?