Connecting Sql_Ax768_12?TxtWeb/code

///////TEST CLASS////////
package test;
import java.sql.*;
import javax.swing.JOptionPane;

public class Test {
        Connection conn = null;
public static Connection ConnectDB(){

try{
    Class.forName("com.mysql.jdbc.Driver");
Connection conn= DriverManager.getConnection("jdbc:mysql://localhost/db?user=root");
JOptionPane.showMessageDialog(null,"Connected to DB");
return conn;

}
catch(Exception e){
JOptionPane.showMessageDialog(null,e);
        return null;
        }
}
}
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/////////LOGIN FORM//////////
  Connection conn = null;
PreparedStatement pst = null;
ResultSet rs = null;

private void b1ActionPerformed(java.awt.event.ActionEvent evt) {
     conn=Test.ConnectDB();
     String Sql = "Select * from people where Fname=? and Lname=?";

     try{
pst=conn.prepareStatement(Sql);
pst.setString(1,t1.getText());
pst.setString(2,t2.getText());
rs=pst.executeQuery();
if(rs.next()){
    JOptionPane.showMessageDialog(null,"Welcome");
    Welcome w = new Welcome();
    w.setVisible(true);
}

     else{
         JOptionPane.showMessageDialog(null,"Incorrect","Acces Denied",JOptionPane.ERROR_MESSAGE);
}
     } catch(Exception e){
JOptionPane.showMessageDialog(null,e);
}

    }
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/////////////////WELCOME FORM//////////
Just a label saying you are welcome