AccessControlException

[Arun Maalik]

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.sql.*;
 
public class today1 extends JApplet implements ActionListener{
     Container cont;
     String st2,st3;
     JButton b=new JButton("SUBMIT");
     JTextField txt=new JTextField();
                     
     public void init(){
         
         cont=getContentPane();
         cont.setLayout(null);       
          b.setBounds(50,50,100,30);
          txt.setBounds(200,50,400,30);
          cont.add(b);
          cont.add(txt);
         b.addActionListener(this);
       }
     
       public void actionPerformed(ActionEvent ae){
        
          
          String st=ae.getActionCommand();
           if(st.equals("SUBMIT"))
               jdbc();
 
            
          
          }
 
     public void jdbc(){
        try{
           
           String st1="select * from authors where au_id=?";
           
           
           Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
           
           
           
           Connection con=DriverManager.getConnection("jdbc:odbc:MyDataSource","sa","");
           
           PreparedStatement pstmt=con.prepareStatement(st1);
           
           st2=txt.getText();
           pstmt.setString(1,st2);
           
           ResultSet rs=pstmt.executeQuery();
           rs.next();
           st3=rs.getString("au_fname");
           
           rs.close();
         }
          catch(Exception e){
          txt.setText(e.toString());
 
          }
      }
 
 
     }

Dear sir in the above code it is throwing an exception as follow

java.security.AccessControlException: access denied (java.lang.RuntimePermission accessClassInPackage.sun.jdbc.odbc)

why i would like to know this althogh the same program i m using without applet then it is working fine.

with regard
Arun kumar maalik

[edited to add code tags]
[ July 16, 2006: Message edited by: Jeanne Boyarsky ]

[Jeanne Boyarsky]

Moving to our Applets forum.

[Ulf Dittmer]

You're trying to access a local resource (i.e., the database sitting on the local machine). Applets are not allowed to do that for security reasons - that's the so-called "applet sandbox". See this wiki page for ways around that restriction.