Name: aaC67449 Date: 01/29/98



Constructor ImageIcon(URL) throws strange Exception (AccessControlException:connect from mars to denied), when tries to get systemresource Image in secure environment (loading applet via http and appletviewer.security.mode=host). Thus some methods in swing classes do not work in this enviroment(see Example2).
See also bug 4107761.


-------------------Example-----------------------------------
import java.awt.swing.*;
import java.applet.*;
import java.net.*;
import java.awt.*;
public class Test1 extends Applet {

  public void init() {

   URL url=UIManager.getLookAndFeel()
                        .getClass().getResource("icons/TreeClosed.gif");
   
   System.out.println("URL:"+url);

   ImageIcon i=new ImageIcon(url);

  }

}

-------------------Output------------------------------------
#>grep appletviewer.security.mode ~/.hotjava/properties
appletviewer.security.mode=host
#>appletviewer http://mars:8080/~ali/test1.html
URL:systemresource:/ZIP/set/java/JDK1.2-Beta3D/solaris/lib/classes.zip/+/java/awt/swing/motif/icons/TreeClosed.gif
java.security.AccessControlException: connect from mars to denied
        at sun.applet.AppletSecurity.checkConnect(AppletSecurity.java:337)
        at sun.applet.AppletSecurity.checkConnect(AppletSecurity.java:390)
        at sun.applet.AppletSecurity.checkConnect(AppletSecurity.java:278)
        at sun.awt.SunToolkit.getImageFromHash(SunToolkit.java:89)
        at sun.awt.SunToolkit.getImage(SunToolkit.java:123)
        at Test1.init(Test1.java:14)
        at sun.applet.AppletPanel.run(AppletPanel.java:283)
        at java.lang.Thread.run(Thread.java:490)
^C

# another case
#>grep appletviewer.security.mode ~/.hotjava/properties
appletviewer.security.mode=unrestricted
#>appletviewer http://mars:8080/~ali/test1.html
URL:systemresource:/ZIP/set/java/JDK1.2-Beta3D/solaris/lib/classes.zip/+/java/awt/swing/motif/icons/TreeClosed.gif
^C

-------------------Example2-----------------------------------
import java.awt.swing.*;
import java.applet.*;
public class Test2 extends Applet {

  public void init() {
    JInternalFrame f=new JInternalFrame();
    JDesktopPane p=new JDesktopPane();
    p.add(f);
    f.setMaximizable(true);
    try {
     f.setMaximum(true);
    } catch(Exception e) {
       System.out.println("Unexpected:"+e);
    }
    
    try {
         JDesktopIcon i=new JDesktopIcon(f);
    } catch(Exception e) {
         System.out.println("Unexpected:"+e);
    }
  
 }

}

-------------------Output------------------------------------

#>grep appletviewer.security.mode ~/.hotjava/properties
appletviewer.security.mode=host
#>appletviewer http://mars:8080/~ali/test2.html
failed creating java.awt.swing.motif.MotifLookAndFeel$1@9a233cd (key=DesktopIcon.icon)
Unexpected:java.lang.NullPointerException
failed creating java.awt.swing.motif.MotifLookAndFeel$1@9a233cd (key=DesktopIcon.icon)
Unexpected:java.lang.NullPointerException
^C
# another case
#>grep appletviewer.security.mode ~/.hotjava/properties
appletviewer.security.mode=unrestricted
#>appletviewer http://mars:8080/~ali/test2.html
^C

======================================================================
---------------------------------------------------------
The problem seems to be addressed in JDK-1.2beta3-F.
However the Example2 from the bug report still fails.

The appletviewer reports AccessControlException (not NullPointerException as earlier):

% appletviewer http://mars:8080/~gor/gor/bugs/test2.html
Unexpected:java.security.AccessControlException: access denied (java.io.FilePermission /set/java/JDK1.2-Beta3F/solaris/lib/classes.zip read)
Unexpected:java.security.AccessControlException: access denied (java.io.FilePermission /set/java/JDK1.2-Beta3F/solaris/lib/classes.zip read)

Could you please clarify in which JDK1.2 build this problem is supposed to be fixed.
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###@###.### 1998-02-11