Starting Java application via web start

Question

I've generated a jnlp file with Netbeans. By double clicking it, I get the following error dialog:

enter image description here

Double clicking the jar works, so no problem there but when double clicking the jnlp file, the antecedent error appears.

The launch.jnlp file looks this:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<jnlp href="launch.jnlp" spec="1.0+">
    <information>
        <title>...</title>
        <vendor>....</vendor>
        <homepage href=""/>
        <description>...</description>
        <description kind="short">....</description>
        <icon href="icon.png" kind="default"/>
        <offline-allowed/>
    </information>
    <update check="background"/>
    <resources>
        <j2se version="1.6+"/>
        <jar href="File.jar" main="true"/>
        <jar href="lib/itextpdf-5.3.3.jar"/>
    </resources>
    <application-desc main-class="right.path.to.my.main.class.here">
    </application-desc>
</jnlp>

I put the File.jar in the same directory as the jnlp file (all the others are there too).

you also have an <icon href="..."> is that icon also in the same path? — ddavison
– ddavison, Commented Oct 16, 2012 at 17:29
Did you click on the Details button on the error message dialog? What did it say? — splungebob
– splungebob, Commented Oct 16, 2012 at 18:16
Thanks! I signed the application with Netbeans and added security element in the jnlp file and it worked! — MikkoP
– MikkoP, Commented Oct 16, 2012 at 19:34

MikkoP · Accepted Answer · 2012-10-17 07:53:09Z

2

I added codebase attribute to jnlp element, added

<security>
    <all-permissions />
</security>

and signed the application (right click on the project in Netbeans, select Properties and Application -> Web start and sign it there) and now it works.

answered Oct 17, 2012 at 7:53

MikkoP

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