Java – Using java web start (jnlp) with several java installed on Windows XP

javajava-web-startjnlp

We have Windows XP with Java 1.5 and Java 1.6 installed. We try to launch JNLP file, there specified required Java version 1.5, like here:

http://java.sun.com/products/autodl/j2se

After JNLP file is downloaded, appears Java 1.6 window. Then, appears window that certificate is wrong and application doesn't run. If we uninstall Java 1.6, the application runs properly.

If we remove the above line from the JNLP file, the application runs with Java 1.6 (but it works wrong, since it was developed for Java 1.5)

So, it is important to run the application with Java 1.5.

Please suggest how to run this JNLP file with Java 1.5, while Java 1.6 is also installed in the system.

Here is the jnlp file, i just replaced all organization specific titles:

<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="http://server_url"> 
  <information>
    <title> Some title </title>  
    <vendor>Some Vendor</vendor>
    <homepage href="some_ulr" /> 
    <description>Product description</description> 
    <icon kind="splash" href="./splash.gif"/>
  </information>
  <security>
    <all-permissions/>
  </security>

  <application-desc main-class="org.eclipse.core.launcher.WebStartMain">
  </application-desc>

    <resources>
    <j2se version="1.5.0_22" />
    <jar href="http://some_jar"/>
    <jar href="http://some_jar1"/>
    <jar href="http://some_jarN"/>
    <property name="server" value="some_server"/>
    <property name="port" value="8080"/>
    </resources>
</jnlp>

Best Answer

Make sure that 1.5 is enabled in the JNLP Runtime Settings. Also check that the JNLP is valid, using JaNeLA or a DTD/XSD.

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Related Solutions

Java – How to create an executable JAR with dependencies using Maven

<build>
  <plugins>
    <plugin>
      <artifactId>maven-assembly-plugin</artifactId>
      <configuration>
        <archive>
          <manifest>
            <mainClass>fully.qualified.MainClass</mainClass>
          </manifest>
        </archive>
        <descriptorRefs>
          <descriptorRef>jar-with-dependencies</descriptorRef>
        </descriptorRefs>
      </configuration>
    </plugin>
  </plugins>
</build>

and you run it with

mvn clean compile assembly:single

Compile goal should be added before assembly:single or otherwise the code on your own project is not included.

See more details in comments.

Commonly this goal is tied to a build phase to execute automatically. This ensures the JAR is built when executing mvn install or performing a deployment/release.

<plugin>
  <artifactId>maven-assembly-plugin</artifactId>
  <configuration>
    <archive>
      <manifest>
        <mainClass>fully.qualified.MainClass</mainClass>
      </manifest>
    </archive>
    <descriptorRefs>
      <descriptorRef>jar-with-dependencies</descriptorRef>
    </descriptorRefs>
  </configuration>
  <executions>
    <execution>
      <id>make-assembly</id> <!-- this is used for inheritance merges -->
      <phase>package</phase> <!-- bind to the packaging phase -->
      <goals>
        <goal>single</goal>
      </goals>
    </execution>
  </executions>
</plugin>

Java – How to specify a JRE range in jnlp file

I think what you want is:

<j2se version="1.5.0_17" />
<j2se version="1.5.0_16" />
<j2se version="1.5.0_15" />
<j2se version="1.5.0_14" />
<j2se version="1.5.0_13" />
<j2se version="1.5.0_12" />
<j2se version="1.5.0_11" />
<j2se version="1.5.0_10" />
<j2se version="1.5.0_09" />
<j2se version="1.5.0_08" />
<j2se version="1.5.0_07" />

See: http://docs.oracle.com/javase/1.5.0/docs/guide/javaws/developersguide/syntax.html#resources

The j2se element specifies what Java 2 SE Runtime Environment (JRE) versions an application is supported on, as well as standard parameters to the Java Virtual Machine. If several JREs are specified, this indicates a prioritized list of the supported JREs, with the most preferred version first.

I've also looked at the Java 6 / Java 7 at it looks like it will work there as well.

http://docs.oracle.com/javase/6/docs/technotes/guides/javaws/developersguide/syntax.html#resources

http://docs.oracle.com/javase/7/docs/technotes/guides/javaws/developersguide/syntax.html#resources

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