Java Web Start (JWS) application creation, installation and execution Process

Step1:  Create a Java Application.

Step2:   Extract jar from the project.

Step3: Rename all jars for version management. Eg rename Test.jar to Test__V1.0.jar.

Step4: Compress all the jars using pack200 compression for reducing the download time.Follow below steps to do:

The following steps describe how to create and deploy a compressed JAR file for a signed RIA.

i.                    Normalize the JAR file using the --repack option.

This step ensures that the security certificate and JAR file will pass verification checks when the RIA is launched.

pack200 --repack Test__V1.0.jar

ii.                  Sign the normalized JAR file.

jarsigner -keystore myKeyStore Test__V1.0.jar me

where myKeyStore is the name of the keystore and me is the alias for the keystore.

iii.                Pack the signed JAR file

pack200 Test__V1.0.jar.pack.gz Test__V1.0.jar   

iv.                 Set the jnlp.packEnabled property to true in the RIA's JNLP file

Step5: Write a JNLP file as below: (Test.jnlp)

<?xml version="1.0" encoding="utf-8"?>

<!-- JNLP File for Web Start Demo -->

  <jnlp codebase="http://localhost:8080/examples/ "

  href="Test.jnlp">

            <security>

       <all-permissions/>

     </security>

    <information>

       <title>Swing Application - Test</title>

       <vendor>Sharma</vendor>

       <description>Swing Application - Test</description>

       <description kind="short">Swing Application - Test</description>

       <offline-allowed/>

              

               <shortcut online="true">

      <desktop/>

      <menu submenu="test" />

    </shortcut>

     </information>

           

     <resources>

               <j2se version="1.7+"  />

               <jar href="Test.jar" main="true" version="1.0"/>

              

                           <jar href="Hello.jar" version="1.3"/>

                           <jar href="ops.jar" version="1.0"/>

           <property name="java.home" value="C:\Program Files\Java\jdk1.8.0_101\"/>                     

               <property name="jnlp.versionEnabled" value="true"/>

           <property name="jnlp.packEnabled" value="true"/>

     </resources>

           

     <application-desc main-class="net.codejava.swing.download.Test">

                        <argument>John</argument>

                        <argument>http://<server_ip>:8080/examples/test.cfg</argument>

             </application-desc>

             

</jnlp>

Step6: Put all the jars, configuration and .jnlp file on the server.

Step7: Creating launcher which we will provide to client to launch our JWS                                            application.

             launcher.bat  (optional)

             javaws http://<IP_server>:8080/examples/Test.jnlp

Step8: When client double click on the launcher, all jars will get downloaded and a shortcut of the application will get created on his/her desktop.

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