Exception in thread "AWT-EventQueue-1" java.security.AccessControlException: acc
ess denied (java.util.PropertyPermission oracle.jserver.version read)
hi,
i m building an online examination application. The code is getting complied .but it throws an exception.Below i m pasting d code as well as exception.plz help me.
It is a simple program for login. It matches d password with password field sored in table type.I m using oracle at backend.
Exception:
Exception in thread "AWT-EventQueue-1" java.security.AccessControlException: acc
ess denied (java.util.PropertyPermission oracle.jserver.version read)
at java.security.AccessControlContext.checkPermission(AccessControlConte
xt.java:323)
at java.security.AccessController.checkPermission(AccessController.java:
546)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
at java.lang.SecurityManager.checkPropertyAccess(SecurityManager.java:12
85)
at java.lang.System.getProperty(System.java:650)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.ja
va:433)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:314)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at login1.actionPerformed(login1.java:129)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:19
95)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.jav
a:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel
.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242
)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonL
istener.java:236)
at java.awt.Component.processMouseEvent(Component.java:6263)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6028)
at java.awt.Container.processEvent(Container.java:2041)
at java.awt.Component.dispatchEventImpl(Component.java:4630)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574
)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
at java.awt.Container.dispatchEventImpl(Container.java:2085)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre
ad.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.
java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)import java.sql.*;
import java.awt.Container;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JComboBox;
import javax.swing.JPasswordField;
import javax.swing.JOptionPane;
import java.util.Arrays;
import java.awt.*;
import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.*;
/*
<applet code= "login1" width=500 height=500>
</applet>
*/
public class login1 extends JApplet implements ActionListener
{
private static String Login = "Login";
private JPasswordField password;
private JComboBox cbotype;
JButton btnlogin;
public void init()
{
Container cnt=getContentPane();
btnlogin =new JButton("Login");
JLabel lbltype=new JLabel("User type");
JLabel lblpassword=new JLabel("Password");
String type[]={"Student","Administrator","Registrar"};
cbotype= new JComboBox(type);
password= new JPasswordField();
password.setEchoChar('*');
cnt.setLayout(null);
cnt.add(lbltype);
cnt.add(lblpassword);
cnt.add(btnlogin);
cnt.add(cbotype);
cnt.add(password);
lbltype.setBounds(50,50,90,20);
lblpassword.setBounds(50,110,90,20);
cbotype.setBounds(150,50,90,20);
password.setBounds(150,110,90,20);
btnlogin.setBounds(100,170,90,30);
cbotype.addActionListener(this);
btnlogin.addActionListener(this);
password.addActionListener(this);
password.setActionCommand(Login);
cbotype.setSelectedIndex(0);
setSize(500,500);
}
public void actionPerformed(ActionEvent e)
{
String cmd = e.getActionCommand();
if (Login.equals(cmd))
{
char[] input = password.getPassword();
String str =(String) cbotype.getSelectedItem();
try
{
Class.forName("oracle.jdbc.driver.OracleDriver");
String url="jdbc:oracle:thin:@localhost:1521:xe";
String username="hr";
String password="hr";
Connection connection=DriverManager.getConnection(url,username,password);
Statement statement=connection.createStatement();
String query="Select PASSWORD from type where user_type= '" + str +"'";
ResultSet resultset=statement.executeQuery(query);
while(resultset.next())
{
char data[] = resultset.getString(1).toCharArray();
if( Arrays.equals (data,input))
{
JOptionPane.showMessageDialog(btnlogin,"Success! You typed the right password.");
}
else
{
JOptionPane.showMessageDialog(btnlogin,"Invalid password. Try again.","Error Message",JOptionPane.ERROR_MESSAGE);
}
}
connection.close();
}
catch(ClassNotFoundException cnfe)
{
System.out.print("ERROR LOADING DRIVER: " + cnfe);
}
catch(SQLException se)
{
System.out.print("SQL Exception " + se);
}
}
}
}