JApplet in browser (IE)
Vishakha Ahuja
Ranch Hand
Posts: 191
posted 15 years ago
Hi,
I've a JApplet that runs fine in appletviewer.
I used HTML converter to convert HTML applet tag into object tag result:
<html>
<body>
<!--"CONVERTED_APPLET"-->
<!-- CONVERTER VERSION 1.0 -->
<OBJECT classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
WIDTH = 250 HEIGHT = 150 codebase="http://java.sun.com/products/plugin/1.1.1/jinstall-111-win32.cab#Version=1,1,1,0">
<PARAM NAME = CODE VALUE = "JLabelDemo.class" >
<PARAM NAME="type" VALUE="application/x-java-applet;version=1.1">
<COMMENT>
<EMBED type="application/x-java-applet;version=1.1" java_CODE = "JLabelDemo.class" WIDTH = 250 HEIGHT = 150 pluginspage="http://java.sun.com/products/plugin/1.1.1/plugin-install.html"><NOEMBED></COMMENT>
</NOEMBED></EMBED>
</OBJECT>
<!--
<APPLET CODE = "JLabelDemo.class" WIDTH = 250 HEIGHT = 150 >
</APPLET>
-->
<!--"END_CONVERTED_APPLET"-->
</body>
</html>
And I've java plug-in 1.3.1_02 which came with jre. I've followed all instructions for setup.
When I run converted html file in IE 5.5 I get
"applet not initialized" in status bar and the following error in Java console:
java.security.AccessControlException: access denied (java.io.FilePermission france.gif read) at java.security.AccessControlContext.checkPermission(Unknown Source) at java.security.AccessController.checkPermission(Unknown Source) at java.lang.SecurityManager.checkPermission(Unknown Source) at java.lang.SecurityManager.checkRead(Unknown Source) at sun.awt.SunToolkit.getImageFromHash(Unknown Source) at sun.awt.SunToolkit.getImage(Unknown Source) at javax.swing.ImageIcon.<init>(Unknown Source) at javax.swing.ImageIcon.<init>(Unknown Source) at JLabelDemo.init(JLabelDemo.java:15) at sun.applet.AppletPanel.run(Unknown Source) at java.lang.Thread.run(Unknown Source)
what can I do ? ???
[ March 10, 2002: Message edited by: Vishakha Ahuja ]
I've a JApplet that runs fine in appletviewer.
I used HTML converter to convert HTML applet tag into object tag result:
<html>
<body>
<!--"CONVERTED_APPLET"-->
<!-- CONVERTER VERSION 1.0 -->
<OBJECT classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
WIDTH = 250 HEIGHT = 150 codebase="http://java.sun.com/products/plugin/1.1.1/jinstall-111-win32.cab#Version=1,1,1,0">
<PARAM NAME = CODE VALUE = "JLabelDemo.class" >
<PARAM NAME="type" VALUE="application/x-java-applet;version=1.1">
<COMMENT>
<EMBED type="application/x-java-applet;version=1.1" java_CODE = "JLabelDemo.class" WIDTH = 250 HEIGHT = 150 pluginspage="http://java.sun.com/products/plugin/1.1.1/plugin-install.html"><NOEMBED></COMMENT>
</NOEMBED></EMBED>
</OBJECT>
<!--
<APPLET CODE = "JLabelDemo.class" WIDTH = 250 HEIGHT = 150 >
</APPLET>
-->
<!--"END_CONVERTED_APPLET"-->
</body>
</html>
And I've java plug-in 1.3.1_02 which came with jre. I've followed all instructions for setup.
When I run converted html file in IE 5.5 I get
"applet not initialized" in status bar and the following error in Java console:
java.security.AccessControlException: access denied (java.io.FilePermission france.gif read) at java.security.AccessControlContext.checkPermission(Unknown Source) at java.security.AccessController.checkPermission(Unknown Source) at java.lang.SecurityManager.checkPermission(Unknown Source) at java.lang.SecurityManager.checkRead(Unknown Source) at sun.awt.SunToolkit.getImageFromHash(Unknown Source) at sun.awt.SunToolkit.getImage(Unknown Source) at javax.swing.ImageIcon.<init>(Unknown Source) at javax.swing.ImageIcon.<init>(Unknown Source) at JLabelDemo.init(JLabelDemo.java:15) at sun.applet.AppletPanel.run(Unknown Source) at java.lang.Thread.run(Unknown Source)
what can I do ? ???
[ March 10, 2002: Message edited by: Vishakha Ahuja ]
Manfred Leonhardt
Ranch Hand
Posts: 1492
posted 15 years ago
Hi Vishakha,
Applets are not allowed to read from the local file system. You will need to sign your applet in order for the user to give your applet permission to do so. Another alternative is to place the image file onto your server in the same directory where your HTML file is located and get it:
getImage( url );
Regards,
Manfred.
Applets are not allowed to read from the local file system. You will need to sign your applet in order for the user to give your applet permission to do so. Another alternative is to place the image file onto your server in the same directory where your HTML file is located and get it:
getImage( url );
Regards,
Manfred.
Vishakha Ahuja
Ranch Hand
Posts: 191
posted 15 years ago
Hi Manfred,
My applet is actually not reading any local files nor is it loading any images. The HTML file is auto generated by HTML Converter and I do not understand the object,embed tags etc.
Can I make some changes to this HTML file to load the applet without causing permission/security problems ?
[ March 11, 2002: Message edited by: Vishakha Ahuja ]
My applet is actually not reading any local files nor is it loading any images. The HTML file is auto generated by HTML Converter and I do not understand the object,embed tags etc.
Can I make some changes to this HTML file to load the applet without causing permission/security problems ?
[ March 11, 2002: Message edited by: Vishakha Ahuja ]
Manfred Leonhardt
Ranch Hand
Posts: 1492
Vishakha Ahuja
Ranch Hand
Posts: 191
Manfred Leonhardt
Ranch Hand
Posts: 1492
posted 15 years ago
Hi Vishakha,
Applets are not allowed to read from the local file system. You will need to sign your applet in order for the user to give your applet permission to do so. Another alternative is to place the image file onto your server in the same directory where your HTML file is located and get it:
getImage( url );
Regards,
Manfred.
Applets are not allowed to read from the local file system. You will need to sign your applet in order for the user to give your applet permission to do so. Another alternative is to place the image file onto your server in the same directory where your HTML file is located and get it:
getImage( url );
Regards,
Manfred.
