Can a Java Applet Access Local File System

Question

I am creating a java applet, that gets information out of a JAR file on my local file system, and creates a jpanel to display in the applet.

I am getting the applet to load correctly on the appletViewer in Eclipse, but it will not load whenever i launch the Html file i created.

The html file is points to the class files, also to the external jars.

Any Suggestions?

Thanks

This will not be workable for an applet on the internet. Why on earth would you not simply add the Jar to the `archive` attribute of the applet? BTW - *"Why does is load in Eclipse but not the web browser though?"* Because Eclipse, typical of IDEs, will run applets with no security sand-box. — Andrew Thompson, Mar 22 '12 at 04:11

score 0 · Answer 1 · answered Jul 18 '13 at 12:00

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If you are using Netbeans then right click on your Applet project ->Properties->webstart-> clickon Enablewebstart ->customize->select radio self-signedby generatedkey->ok

then your job will be done

answered Jul 18 '13 at 12:00

user2492472

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score 0 · Accepted Answer · answered Mar 21 '12 at 21:34

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Yes, if the applet is signed with the jarsigner tool.

answered Mar 21 '12 at 21:34

user207421

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Why does is load in Eclipse but not the web browser though? – butler_alfred Mar 21 '12 at 21:58

score 0 · Answer 3 · answered Mar 21 '12 at 21:35

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Unless explicitly granted, an applet may not access the local file system.

"Will not load" sounds like you have a packaging error instead of a permission error. Have a look at the appletviewer logs.

answered Mar 21 '12 at 21:35

Thorbjørn Ravn Andersen

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i have a policy file that i grant all permissions to, shouldnt that enable me to access anything i want? – butler_alfred Mar 21 '12 at 21:36
I do not believe policy files allow applets outside the sandbox. – Thorbjørn Ravn Andersen Mar 21 '12 at 21:45
@ThorbjørnRavnAndersen They do. You can allocate all permissions to a codebase. The local filesystem may be different. – flup Mar 03 '13 at 12:08
You need to do so explicitly. – Thorbjørn Ravn Andersen Mar 03 '13 at 13:04

Can a Java Applet Access Local File System

3 Answers3

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