Java web start - Version problems

Question

I've decided to make my app java web start, i prepared the .jar file and .jnlp. Here is .jnlp:

<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" 
    codebase="http://www.mypage.com/jar/" 
    href="BoxChat.jnlp">
    <information>
        <title>BoxChat</title>
        <vendor>Kitty</vendor>
    </information>
    <resources>
        <!-- Application Resources -->
        <j2se version="1.6+"
              href="http://www.mypage.com/jar/"/>
        <jar href="chat.jar" main="true" />

    </resources>
    <application-desc
         name="BoxChat"
         main-class="chat.class"
         width="320"
         height="240">
     </application-desc>
     <update check="background"/>
</jnlp>

It crashes and says that i have no java 1.6 installed, but im SURE that i have it. What is the problem? Thanks for any replies.

Window--Preferences--Java--installed JREs--> Check which java version you have. If it not 1.6, you need to click on Add--> select your jdk 1.6 location. Restart your eclipse. — kosa, Jan 19 '12 at 20:39
That JNLP is invalid. Be sure to check it using [JaNeLA](http://pscode.org/janela/). — Andrew Thompson, Jan 20 '12 at 00:06

score 2 · Accepted Answer · answered Jan 20 '12 at 00:05

2

Look through the tips in Java Web Start - Runtime Versioning. Look particularly for references to the JNLP Runtime Settings dialog.

JLNP Runtime Settings dialog

answered Jan 20 '12 at 00:05

Andrew Thompson

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score 1 · Answer 2 · answered Jan 20 '12 at 06:18

When you install java usually there are two steps. The first is jdk and when it is finished then it asks you whether you would like to install jre. And webstart requires JRE installed correctly. So I would simply sujest to install it again and make sure that you perform the second step (jre).

score 1 · Answer 3 · answered Feb 14 '12 at 10:19

1

Looks like the problem is with the below line:

<j2se version="1.6+" href="http://www.mypage.com/jar/"/>

You need to specify the vendor url only if you want to request a specific JRE version for example 1.4.2_04. Remove the href attribute and re-try.

answered Feb 14 '12 at 10:19

Sunil Manheri

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Java web start - Version problems

3 Answers3

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