package common;
import java.sql.*;
import java.io.*;
import javax.naming.*;
import javax.sql.*;
import java.util.*;
public class DbAction{
public Connection conn = null;
public PreparedStatement stmt=null;
public Properties getProperties(String str){
Properties properties = new Properties();
try{
InputStream is =getClass().getResourceAsStream("/"+str);
properties.load(is);
if(is != null)
is.close();
}
catch(IOException ioexception){
System.out.println("Open config file failure.");
}
&
