Java Web Start opening code not app

For the past year I have had no problems opening up *.jnlp files with Java Web Start. Starting last week when clicking on any link to launch a Java app I get the code opening up in TextEdit.
For example when I click on 'Welcome to Web Start' on this page: http://developer.apple.com/java/javawebstart/ I see (just to start)
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="http://developer.apple.com/java/javawebstart/apps/welcome" href="JWS_Demo.jnlp">
<information>
<title>Welcome to Web Start!</title>
<vendor>Apple Computer, Inc.</vendor>
<homepage href="http://developer.apple.com/java/javawebstart" />
<offline-allowed />
Can anyone please point me to a way to repair my Web Start installation? I give a lot of webinars and they all require that Java work.

ISSUE
After the Java update, jnlp files are opened by TextEdit and not Java Web Start.
SOLUTION
1. Find the jnlp file on your machine
2. Get Info (Cmd+I)
3. Expand the “Open with” section
4. Select “Other”
5. Navigate to Macintosh HD/System/Library/CoreServices/Java Web Start
6. Check the “Always Open With” option
7. Click the “Add” button
8. Click the “Change All...” button

Similar Messages

Java Web Start and DeployDirector: What's the difference?

I am the product manager for DeployDirector at Sitraka (now part of Quest Software). I'm NOT in sales; I'd simply like to provide you with some information.
From talking with DeployDirector users and evaluators, and from my own discussions with the folks at Sun, I have discovered that there is great deal of confusion about the difference between Java Web Start and DeployDirector. I'd like to clarify this by periodically posting some information about the two.
Though the products seem similar in concept, they are designed for different purposes. They both deploy, auto-update and manage the JRE for client-side Java applications, but beyond that, they are quite different.
Java Web Start is ideally designed for applications deployed over the Internet, where application-provider trust is an issue. Why? The security sandbox guarantees that application can do no harm. (There's some good information about Java Web Start and sandbox apps on ScheduleWorld at http://www.scheduleworld.com/itsYourLife.html) Web Start's architecture simply consists of a client piece that interprets a JNLP file. Because of the sandbox and its simplicity, I believe JWS is best used for independent software vendors, independent developers, etc.
Because DeployDirector is ideally designed for internal enterprise applications, it does not enforce the security sandbox. Trust is not an issue here, because internal users typically trust their internal IT group. DeployDirector's architecture consists of both a client and a server piece, which allows us to support more complex deployment and update scenarios (e.g., scheduled and optional updates) and applications management capabilities like rollback, reporting, exception monitoring, authentication/authorization out of the box. All of this is configured through the DeployDirector administration console.
In some situations, DeployDirector may be unnecessary overhead. In other situations, Java Web Start simply does not provide enough capability and building in this into Web Start can be difficult.
If you'd like more information, we have whitepapers and case studies (including one specifically about DeployDirector and JWS) available on our website at http://www.sitraka.com/software/deploydirector/
If you'd like to discuss some of these differences, or if you have questions about DeployDirector, feel free to email me directly. (Or post here, of course.)
Thanks,
Sonal Champsee
[email protected]

Hi Gerald,
Given what I know about your emnity towards DeployDirector (which is clearly illustrated in this thread: http://forum.java.sun.com/thread.jsp?thread=348061&forum=38&message=1446155 that was evidently a response to this article: http://www.javaworld.com/javaworld/jw-11-2002/jw-1122-autoupdate.html) I'm going to take a (pardon the expression) "don't feed the trolls" approach here.
I'm simply re-iterate that JNLP, and its implementations such as Web Start and OpenJNLP, are designed for a very different set of users that DeployDirector. The differences in functionality between the two products reflect that.
The enterprise has different requirements in a deployment mechanism for its internal, critical applications than software vendors and independant developers. DeployDirector addresses the requirements of the enterprise. Frankly, most of our recent customers only chose to buy the product after initially rejecting it and (unsucessfully) attempting to use JNLP and Web Start. Sometimes people only learn the hard way: different users have different requirements which are suited to different tools or technologies.
Sonal

Java Web Start doesn't run by clicking on the link, how can I fix it?

Hello,
I've been trying to make a Java Web Start application, I finished everything, but when I click on the link which is connected to the jnlp file, it only displays the XML code in the explorer instead of running the program. But if i download the jnlp file and double click it, it starts the Java Web Start. Anyone can tell me how to fix this?
I thought may be JRE installation, but I tried to click on some sample on the web, it works fine for other Java Web Start application, but not mine.
Thanks you.
Kit

Does your webserver know about JNLP? You need to map the .jnlp extension to "application/x-java-jnlp-file".
See the Web Server Setup section of http://java.sun.com/developer/technicalArticles/Programming/jnlp/

Err. in programs copiled with Jdev 9.0.3 and run with Java Web Start

Hi all,
when I build my programs with Oracle9j JDeveloper 9.0.3.988 and I use them with Java Web Start, programs do not run, while when compiled with Oracle9j JDeveloper 9.0.2.x it runs without problems.
The Java version used in both cases is 1.4.0.
Here's an example of the log from Java Web Start:
Error in JavaWeb Start
viewer/imageViewer/ViewerAppState$1 (Illegal Variable name " val$files")
java.lang.ClassFormatError: viewer/imageViewer/ViewerAppState$1 (Illegal Variable name " val$files")
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:502)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
     at com.sun.jnlp.JNLPClassLoader.defineClass(Unknown Source)
     at com.sun.jnlp.JNLPClassLoader.access$1(Unknown Source)
     at com.sun.jnlp.JNLPClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at com.sun.jnlp.JNLPClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
     at viewer.imageViewer.UtilityMenuPane.jbInit(UtilityMenuPane.java:167)
     at viewer.imageViewer.UtilityMenuPane.<init>(UtilityMenuPane.java:155)
     at viewer.imageViewer.UtilityMenuPane.getInstance(UtilityMenuPane.java:147)
     at viewer.imageViewer.ImageViewerFrame.jbInit(ImageViewerFrame.java:179)
     at viewer.imageViewer.ImageViewerFrame.<init>(ImageViewerFrame.java:145)
     at viewer.imageViewer.ImageViewerFrame.getInstance(ImageViewerFrame.java:126)
     at viewer.ImageViewer.execute(ImageViewer.java:30)
     at viewer.Viewer.execute(Viewer.java:63)
     at viewer.Viewer.<init>(Viewer.java:27)
     at viewer.Viewer.main(Viewer.java:40)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at com.sun.javaws.Launcher.executeApplication(Unknown Source)
     at com.sun.javaws.Launcher.executeMainClass(Unknown Source)
     at com.sun.javaws.Launcher.continueLaunch(Unknown Source)
     at com.sun.javaws.Launcher.handleApplicationDesc(Unknown Source)
     at com.sun.javaws.Launcher.handleLaunchFile(Unknown Source)
     at com.sun.javaws.Launcher.run(Unknown Source)
     at java.lang.Thread.run(Thread.java:536)
Does anybody know why this happens?
Thanks

Hi There.
We had the same problem with some of our code. We moved the definition of the class from a method out of the method. Like this:
public class{
class{
instead of doing this:
public class{
method() {
class{
This worked with the web start......
Best regards
Jesper Lorentzen

Call report from java with deployment of java web start

I need call report from java,the call function is:execURL ( String pURL )
pURL is a url link to call report from report services .
such as :http://10.20.1.43:8888/reports/rwservlet?destype=cache&desformat=PDF&report=test.rdf&user=scott/tiger@cims
public static void execURL ( String pURL )
String tempstr = new String();
int posIdx = 0;
if ( (System.getProperty("os.name").equals("Windows NT"))||
(System.getProperty("os.name").equals("Windows 2000")) )
posIdx = pURL.indexOf("&");
while ( posIdx > 0 )
tempstr = pURL.substring(0,posIdx)+"^"+pURL.substring(posIdx);
pURL = tempstr;
posIdx = pURL.indexOf("&",posIdx+2);
try
Runtime.getRuntime().exec("cmd /c start "+pURL);
catch (Exception e1) {System.out.println(e1.getMessage()); }
else
try
Runtime.getRuntime().exec("start "+pURL);
catch (Exception e2)
System.out.println(e2.getMessage());
It's run with no problem with deployment of simple jar.
But when i call report with deployment of java web start,it can not.
I think it's java secuity problem,so i add
Permission java.io.FilePermission "c://winnt//system32//cmd.exe", "execute";
in java.policy file in client(windows 20000).However ,it can not too.
Who can help me,Thanks in Advance!

David,
In your code, 'cmd' is invoked as Runtime.getRuntime().exec("cmd /c start "+pURL);
but in your policy file you specify
Permission java.io.FilePermission "c://winnt//system32//cmd.exe", "execute";
Before creating a new process, the security manager checks for FilePermission(cmd,"execute")
if cmd is an absolute path, otherwise it calls checkPermission with
FilePermission("<<ALL FILES>>","execute"). Try specifying
FilePermission("<<ALL FILES>>","execute") in your policy file.
But, I believe using exec, may not be the right solution as it may not work on
other platforms. Also you will have to expect the client m/c to relax security
permission.
Did you consider using java.net.HttpUrlConnection class instead to access the report
service URL?
HTH,
Sathish.

Java Web Start didn't install with j2sdk-1_4_2_04-windows-i586-p.exe

I just uninstalled all my java stuff from my XP Pro system
then re-installed... j2sdk-1_4_2_04-windows-i586-p.exe
With the SDK installation... j2re1.4.2_04 also installed... I think this is the Java Runtime
But, before I had a folder for Java Web Start... not I don't...
AND, the file... javaws-1_2-windows-i586-i.exe
refered to on the Java Web Start Installation page isn't on my system anymore...
(It was in an older vrsion of the Java Runtime... ( I had 2 java Runtimes at once installed, that is why I uninstalled... and even though I had Java Web Start, it wasn't working... so I deleted everything and reinstalled the j2sdk-1_2_04-windiws-i586-p.exe.)
I would just download the java Web Start but the docs tell me it should be installed when the SDK and Runtime are installed... so I worry if I got the installation correct.
Can anyone please advise me of how to get things working again.
thanks for any help - Will

I fixed this broblem just install both JDK and JRE.

Java Web Start and BC4J/OC4J

Hi all developers,
This is my first forum message, and I hope that there is someone that can help me.
Problem: A JClient using BC4J in a 3tier situation work perfectly well when run from within the IDE, however using the Web Start Wizard and deployed to the Application server and run from Java Web Start, it does not work.
Is there any HowTo or documentation on the right settings, roles, security, procedures, etc. with regard to Jclient, BC4J and Java WebStart?
Thanks
Craig

Ant build file which does the signing
Please make sure you make a backup of the existing bc4jlibs.ear before you use this build file.

<project name="buildear" basedir="." default="ear">

<property name="lib.home" value="${jdeveloper.root}/lib"/>
<property name="ord.home" value="${jdeveloper.root}/ord"/>
<property name="j2ee.home" value="${jdeveloper.root}/j2ee"/>
<property name="jlib.home" value="${jdeveloper.root}/jlib"/>
<property name="jdev.home" value="${jdeveloper.root}/jdev"/>
<property name="vbroker4.home" value="${jdeveloper.root}/vbroker4"/>
<property name="jdbc.home" value="${jdeveloper.root}/jdbc"/>
<property name="BC4J.home" value="${jdeveloper.root}/BC4J"/>

<property name="temp.dir" value="${jdeveloper.root}/jdev/temp"/>
<property name="temp.war.dir" value="${temp.dir}/warroot"/>
<property name="temp.ear.dir" value="${temp.dir}/earroot"/>

<property name="lib.war.name" value="${temp.ear.dir}/lib.war"/>
<property name="ord.war.name" value="${temp.ear.dir}/ord.war"/>
<property name="j2ee.war.name" value="${temp.ear.dir}/j2ee.war"/>
<property name="jlib.war.name" value="${temp.ear.dir}/jlib.war"/>
<property name="jdev.war.name" value="${temp.ear.dir}/jdev.war"/>
<property name="vbroker4.war.name" value="${temp.ear.dir}/vbroker4.war"/>
<property name="jdbc.war.name" value="${temp.ear.dir}/jdbc.war"/>
<property name="BC4J.war.name" value="${temp.ear.dir}/BC4J.war"/>
<taskdef name="appxml" classname="oracle.jbo.dt.jclient.ant.taskdefs.ApplicationXmlGenerator"/>
<target name="init">
<mkdir dir="${temp.dir}"/>
<mkdir dir="${temp.war.dir}"/>
<mkdir dir="${temp.ear.dir}"/>
</target>
<target name="clean">
<delete dir="${temp.dir}"/>
</target>
<target name="sign_jar" if="signing.enabled">
<signjar jar="${jarname}" alias="${alias}" storepass="${storepass}"/>
</target>

<target name="lib_war" depends="init">
<copy todir="${temp.war.dir}">
<fileset dir="${lib.home}">
<include name="xmlparserv2.jar"/>
</fileset>
<fileset dir="${jdeveloper.root}/jdev/multi/system/templates/jclient">
<include name="WEB-INF/web.xml"/>
</fileset>
</copy>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/xmlparserv2.jar"/>
</antcall>
<jar jarfile="${temp.ear.dir}/lib.war">
<fileset dir="${temp.war.dir}">
<include name="**/*.jar"/>
<include name="**/*.zip"/>
<include name="WEB-INF/web.xml"/>
</fileset>
</jar>
<delete dir="${temp.war.dir}"/>
</target>

<target name="ord_war" depends="init">
<copy todir="${temp.war.dir}">
<fileset dir="${ord.home}">
<include name="jlib/jmf.jar"/>
<include name="jlib/ordhttp.jar"/>
<include name="jlib/ordim.jar"/>
</fileset>
<fileset dir="${jdeveloper.root}/jdev/multi/system/templates/jclient">
<include name="WEB-INF/web.xml"/>
</fileset>
</copy>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/jlib/jmf.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/jlib/ordhttp.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/jlib/ordim.jar"/>
</antcall>
<jar jarfile="${temp.ear.dir}/ord.war">
<fileset dir="${temp.war.dir}">
<include name="**/*.jar"/>
<include name="**/*.zip"/>
<include name="WEB-INF/web.xml"/>
</fileset>
</jar>
<delete dir="${temp.war.dir}"/>
</target>

<target name="j2ee_war" depends="init">
<copy todir="${temp.war.dir}">
<fileset dir="${j2ee.home}">
<include name="home/lib/ejb.jar"/>
<include name="home/lib/jaas.jar"/>
<include name="home/lib/jms.jar"/>
<include name="home/lib/jndi.jar"/>
<include name="home/lib/jta.jar"/>
<include name="home/oc4jclient.jar"/>
</fileset>
<fileset dir="${jdeveloper.root}/jdev/multi/system/templates/jclient">
<include name="WEB-INF/web.xml"/>
</fileset>
</copy>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/home/lib/ejb.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/home/lib/jaas.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/home/lib/jms.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/home/lib/jndi.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/home/lib/jta.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/home/oc4jclient.jar"/>
</antcall>
<jar jarfile="${temp.ear.dir}/j2ee.war">
<fileset dir="${temp.war.dir}">
<include name="**/*.jar"/>
<include name="**/*.zip"/>
<include name="WEB-INF/web.xml"/>
</fileset>
</jar>
<delete dir="${temp.war.dir}"/>
</target>

<target name="jlib_war" depends="init">
<copy todir="${temp.war.dir}">
<fileset dir="${jlib.home}">
<include name="LW_PfjBean.jar"/>
<include name="bigraphbean.jar"/>
<include name="jdev-cm.jar"/>
</fileset>
<fileset dir="${jdeveloper.root}/jdev/multi/system/templates/jclient">
<include name="WEB-INF/web.xml"/>
</fileset>
</copy>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/LW_PfjBean.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/bigraphbean.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/jdev-cm.jar"/>
</antcall>
<jar jarfile="${temp.ear.dir}/jlib.war">
<fileset dir="${temp.war.dir}">
<include name="**/*.jar"/>
<include name="**/*.zip"/>
<include name="WEB-INF/web.xml"/>
</fileset>
</jar>
<delete dir="${temp.war.dir}"/>
</target>

<target name="jdev_war" depends="init">
<copy todir="${temp.war.dir}">
<fileset dir="${jdev.home}">
<include name="lib/jdev-rt.jar"/>
</fileset>
<fileset dir="${jdeveloper.root}/jdev/multi/system/templates/jclient">
<include name="WEB-INF/web.xml"/>
</fileset>
</copy>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/lib/jdev-rt.jar"/>
</antcall>
<jar jarfile="${temp.ear.dir}/jdev.war">
<fileset dir="${temp.war.dir}">
<include name="**/*.jar"/>
<include name="**/*.zip"/>
<include name="WEB-INF/web.xml"/>
</fileset>
</jar>
<delete dir="${temp.war.dir}"/>
</target>

<target name="vbroker4_war" depends="init">
<copy todir="${temp.war.dir}">
<fileset dir="${vbroker4.home}">
<include name="lib/vbjorb.jar"/>
</fileset>
<fileset dir="${jdeveloper.root}/jdev/multi/system/templates/jclient">
<include name="WEB-INF/web.xml"/>
</fileset>
</copy>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/lib/vbjorb.jar"/>
</antcall>
<jar jarfile="${temp.ear.dir}/vbroker4.war">
<fileset dir="${temp.war.dir}">
<include name="**/*.jar"/>
<include name="**/*.zip"/>
<include name="WEB-INF/web.xml"/>
</fileset>
</jar>
<delete dir="${temp.war.dir}"/>
</target>

<target name="jdbc_war" depends="init">
<copy todir="${temp.war.dir}">
<fileset dir="${jdbc.home}">
<include name="lib/classes12.jar"/>
<include name="lib/nls_charset12.jar"/>
</fileset>
<fileset dir="${jdeveloper.root}/jdev/multi/system/templates/jclient">
<include name="WEB-INF/web.xml"/>
</fileset>
</copy>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/lib/classes12.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/lib/nls_charset12.jar"/>
</antcall>
<jar jarfile="${temp.ear.dir}/jdbc.war">
<fileset dir="${temp.war.dir}">
<include name="**/*.jar"/>
<include name="**/*.zip"/>
<include name="WEB-INF/web.xml"/>
</fileset>
</jar>
<delete dir="${temp.war.dir}"/>
</target>

<target name="BC4J_war" depends="init">
<copy todir="${temp.war.dir}">
<fileset dir="${BC4J.home}">
<include name="jlib/bc4jctvb.jar"/>
<include name="jlib/bc4jdatum.jar"/>
<include name="jlib/bc4jdomgnrc.jar"/>
<include name="jlib/bc4jimjui.jar"/>
<include name="jlib/bc4jmtvb.jar"/>
<include name="jlib/bc4jui.jar"/>
<include name="lib/bc4jct.jar"/>
<include name="lib/bc4jctejb.jar"/>
<include name="lib/bc4jdomorcl.jar"/>
<include name="lib/bc4jimdomains.jar"/>
<include name="lib/bc4jmt.jar"/>
<include name="lib/bc4jmtejb.jar"/>
<include name="lib/collections.jar"/>
</fileset>
<fileset dir="${jdeveloper.root}/jdev/multi/system/templates/jclient">
<include name="WEB-INF/web.xml"/>
</fileset>
</copy>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/jlib/bc4jctvb.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/jlib/bc4jdatum.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/jlib/bc4jdomgnrc.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/jlib/bc4jimjui.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/jlib/bc4jmtvb.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/jlib/bc4jui.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/lib/bc4jct.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/lib/bc4jctejb.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/lib/bc4jdomorcl.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/lib/bc4jimdomains.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/lib/bc4jmt.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/lib/bc4jmtejb.jar"/>
</antcall>
<antcall target="sign_jar">
<param name="jarname" value="${temp.war.dir}/lib/collections.jar"/>
</antcall>
<jar jarfile="${temp.ear.dir}/BC4J.war">
<fileset dir="${temp.war.dir}">
<include name="**/*.jar"/>
<include name="**/*.zip"/>
<include name="WEB-INF/web.xml"/>
</fileset>
</jar>
<delete dir="${temp.war.dir}"/>
</target>
<target name="create_application_xml" depends="init">
<appxml appxml="${temp.ear.dir}/application.xml">
<displayname name="bc4j"/>
<webmodule weburi="lib.war" contextroot="/lib"/>
<webmodule weburi="ord.war" contextroot="/ord"/>
<webmodule weburi="j2ee.war" contextroot="/j2ee"/>
<webmodule weburi="jlib.war" contextroot="/jlib"/>
<webmodule weburi="jdev.war" contextroot="/jdev"/>
<webmodule weburi="vbroker4.war" contextroot="/vbroker4"/>
<webmodule weburi="jdbc.war" contextroot="/jdbc"/>
<webmodule weburi="BC4J.war" contextroot="/BC4J"/>
</appxml>
</target>
<target name="ear">
<antcall target="lib_war"/>
<antcall target="ord_war"/>
<antcall target="j2ee_war"/>
<antcall target="jlib_war"/>
<antcall target="jdev_war"/>
<antcall target="vbroker4_war"/>
<antcall target="jdbc_war"/>
<antcall target="BC4J_war"/>
<antcall target="create_application_xml"/>
<ear earfile="${ear.file.name}" appxml="${temp.ear.dir}/application.xml">
<fileset dir="${temp.ear.dir}">
<include name="*.war"/>
</fileset>
</ear>
</target>

<target name="sign">
<property name="signing.enabled" value="true"/>
<antcall target="ear"/>
</target>
</project>

Java Web Start and DNS Service Provider

I have an implementation of a DNS Service Provider that works fine as an Application. But when deployed as an applet or application through Java Web Start, it is not picking up the DNS provider override
It is like this. I have a Simple Test Program
dabba#cat Test.java
import java.net.*;
import sun.net.spi.nameservice.NameService;
import sun.net.spi.nameservice.dns.DNSNameService;
public class Test {
public static void main(String args[]) throws Exception{
try {
System.setProperty("sun.net.spi.nameservice.provider.1", "dns,mine");
InetAddress ia = InetAddress.getByName(args[0]);
System.out.println(ia);
catch(Exception e) {
System.out.println("in exception handler" + e);
dabba# cat MyNameService.java
import sun.net.spi.nameservice.NameService;
import sun.net.spi.nameservice.dns.DNSNameService;
import java.net.UnknownHostException;
public class MyNameService implements NameService {
static {
//System.setProperty("sun.net.spi.nameservice.nameservers", "localhost"); // ETL
NameService ns;
public MyNameService() throws Exception {
ns = new DNSNameService();
public byte[][] lookupAllHostAddr(String host) throws UnknownHostException {
System.out.println("*** lookup host = " + host);
byte[][] a = new byte[1][4];
a[0][0]=(byte)127;
a[0][1]=0;
a[0][2]=0;
a[0][3]=(byte)1;
System.out.println("return a.length = " + a.length);
return a;
public String getHostByAddr(byte[] addr) throws UnknownHostException {
throw new Error("not implemented");
dabba#cat MyNameServiceDescriptor.java
import sun.net.spi.nameservice.*;
public final class MyNameServiceDescriptor implements NameServiceDescriptor {
public NameService createNameService() throws Exception {
return new MyNameService();
public String getProviderName() {
return "mine";
public String getType() {
return "dns";
dabba#cat META-INF/services/sun.net.spi.nameservice.NameServiceDescriptor
# dns service provider descriptor
MyNameServiceDescriptor
dabba# java -cp . Test www.sun.com
*** lookup host = www.sun.com
return a.length = 1
www.sun.com/127.0.0.1
So the above program works as intended as an application. Whatever hostname I specify, it returns localhost. Now, I'm not able to get this to work when I embed this in an Applet or Application launced through Java Web Start. Am I missing something
thanks,
Balaji

We are trying to do the same thing for a different purpose. You need to set the override sooner than WebStart lets you... It has to be on the command line.
We are trying to overide the default nameservice because it uses reverse dns which is slow at some of our sites. We need to set the parameter
sun.net.spi.nameservice.provider.1=dns,sun before the VM starts using webstart. The only way we can do this is by setting the environment variable
JAVAWS_VM_ARGS=-Dsun.net.spi.nameservice.provider.1=dns,sun on the client. This is not real easy from the server side.
Is there any way we can make the client default to this nameservice provider? There must be some file somewhere on the client I can put this property in...

Java Web Start keeps asking user to accept signed app

When in select "run" in the java web start security popup for a signed web start application I expected that Java Web Start would remember my decision since the app i supposed to be installed and run locally the next time? But next time I run the app Im asked the same question. So far Im only using a self-signed certificate - will web start react differently when I use a real certificate? I do have the option to generally accept the certificate in the popup but I was hoping java web start would remember my decision on a per application basis?

Did a quick search on your post for '?' and did not find one. Did you have a question?
BTW - when posting code or code snippets, XML/HTML(/JNLP) or input/output, please use the code tags as described on the 'sticky post' on the top of the forum thread listing. It is not too late to edit your initial post to do that (and you might as well add a question while you have it open for edit).

How can I open help file (HTML or .chm) from Java Web Start (new to JAVA)

Hi All,
Im trying to open the help file of my application.
When trying to access the help file from the GUI (pressing F1 for launching the help file), I'm geting the an error, something like:
"Can't show help URL: jar:file:C:\Documents and Settings\%USER%\Application Data\Sun\Java\Deployment\javaws\cache\http\Dlocalhost\P7001\DMwebstart\RMjar-name!/com/resources/helpFiles/MyHelpFile.html"
It seems that the file which is packed in a jar, was downloaded to the Java Web Start cache directory:
C:\Documents and Settings\%USER%\Application Data\Sun\Java\Deployment\javaws\cache\http\Dlocalhost\P7001\DMwebstart
The code which is activated when launching the help file is:
try
            ResourceBundle resourceBundle = DoubleResourceBundle.getBundle("Resource", "ResourceImpl");
            RuntimeUtil.launchFile(new File(resourceBundle.getString("help.file")));
        } catch (IOException e)
            // TODO Auto-generated catch block
            e.printStackTrace();
        }where the property "help.file" is in some property file in the resource bundle named "Resource", and looks like this :
help.file="com/trax/docs/help/global/MyHelpFile.html"
The function "RuntimeUtil.launchFile" knows how to launch any file in its default application, and indeed it does launches the html, when giving it an absolute path to the file on my PC, as "C:\Helpfiles\MyHelpFile.html" as such:
RuntimeUtil.launchFile("C:\Helpfiles\MyHelpFile.html");My question is :
The application is going to be deployed on a Customer PC. How can I access the html file from the code, with a relative path and not its absolute path on the customer pc, which I can't know?
I found these restrictions regarding web start:
(copied from "http://rachel.sourceforge.net/"):
*Rule 1: Java Archives only. No loose files.* All your resources have to be packaged in Java Archives (jar) if you want to have
them delivered to the user's machine and kept up-to-date automatically by Java Web Start.
*Rule 2: No file paths.* You can't use absolute or relative file paths to locate your
jars holding your resources (e.g. <code>jar:file:///c:/java/jws/.cache/resources.jar</code>).
Absolute file paths won't work because you never know where Java Web Start
will put your jar on the user's machine. Relative file paths won't work because Java Web Start
mangles the names of your jars (e.g. <code>venus.jar</code> becomes <code>RMvenus.jar</code>)
and every JNLP client implementation has the right to mangle your names
in a different way and you, therefore, can't predict the name with
which your jar will be rechristend and end up on the user's machine in
the application cache.Seems complex or impossible, to perform a simple task like opening a file.
Please advise (I'm new to Java and Web Start).
BTW, I'm working with IntelliJ IDEA 5.0.
Thanks,
Zedik.
{font:Tahoma}{size:26pt}
{size}{font}

the follwing method i have used to open html file ...
so to access html file i am shipping resources folder with jar file ..
private void openHtmlPages(String pageName) {
     String cmd[] = new String[2];
     String browser = null;
     File file = null;
     if(System.getProperty("os.name").indexOf("Linux")>-1) {
          file = new File("/usr/bin/mozilla");
          if(!file.exists() ) {
          }else     {
               browser = "mozilla";
     }else {
          browser = "<path of iexplore>";
     cmd[0] = browser;
     File files = new File("");
     String metaData = "/resources/Help/Files/"+pageName+".html"; // folder inside jar file
     java.net.URL url = this.getClass().getResource(metaData);
     String fileName = url.getFile();
     fileName = fileName.replaceAll("file:/","");
     fileName = fileName.replaceAll("%2520"," ");
     fileName = fileName.replaceAll("%20"," ");
     fileName = fileName.replaceAll("jarfilename.jar!"," ").trim();
     cmd[1] = fileName;
     try{
          Process p = Runtime.getRuntime().exec(cmd);
     }catch(java.io.IOException io){
               //Ignore
can anyone give me the solution..???
Regards
Ganesan S

Screen Saver crashing my Java Web Start app

I've written a Java Web Start time tracker application that all employees run from the time they start work until they leave at the end of the day. The only problem is that there are a couple of people who from time to time find that the application has crashed when they unlock their Windows screen saver. The application window continues to show the screen saver image and the title bar says "Not Responding". In an attempt to get some clues, I had one person keep the java console running - but nothing new appears in the console.
I've personally tried crashing the app by using screen savers, but I cannot duplicate the problem. I've also tried letting my computer go into standby mode and I've let it hibernate. But every time, the application continues running as soon as I log back in.
Any ideas as to why the screen saver could trigger a problem like this for some users?

>
I've written a Java Web Start ... . The only problem is that there are a couple of people who from time to time find that the application has crashed when they unlock their Windows screen saver. >What screensaver(s)? Some important distinctions might be
- Windows standard savers (the savers supplied with the OS, if so, do they all use Open-GL or all use...?)
- Windows compatible, 3rd party savers.
- Saverbeans screensavers (Java based). E.G. <https://screensavers.dev.java.net/>

Java Web Start apps defaulting to 32-bit JVM; need 64-bit

We use Java Web Start to install our client interface application.
When I install on a 64-bit Windows Server 2003 system, the desktop icon that is created points to C:\WINDOWS\SysWOW64\javaws.exe, which opens the client in a 32-bit JVM.
How can I get Web Start to generate the icon with a target of C:\WINDOWS\SYSTEM32\javaws.exe so that it will start in a 64-bit JVM?
Do we control the string that is used for the target or is it a built-in function that we cannot change? (Note: I'm not the developer, just researching the problem so I can tell the coder what, if anything, should be changed.)

Jerry_Ford wrote:
..When I install on a 64-bit Windows Server 2003 system, the desktop icon that is created points to C:\WINDOWS\SysWOW64\javaws.exe, which opens the client in a 32-bit JVM.
How can I get Web Start to generate the icon with a target of C:\WINDOWS\SYSTEM32\javaws.exe so that it will start in a 64-bit JVM?Perhaps the ExtensionInstallerService can be of use here, or particularly the [setJREInfo(String,String)|http://java.sun.com/javase/6/docs/jre/api/javaws/jnlp/javax/jnlp/ExtensionInstallerService.html#setJREInfo(java.lang.String,%20java.lang.String)] method.
Informs the JNLP Client of the path to the executable for the JRE, if this is an installer for a JRE, and about platform-version this JRE implements. I provide a small [demo. of the EIS|http://pscode.org/jws/api.html#eis].

HT5651 When I execute Java Web Start, I get an error "Java Web Start cannot be opened because of an error " I am running OSX 10.6.8 and Java Update 13. Anyone know why ?

Error :

I still have the problem. This is the error:
Process:         Java Web Start [2760]
Path:            /Users/Admin/UTILITIES/Java/Java Web Start.app/Contents/MacOS/Java Web Start
Identifier:      com.apple.JavaWebStart
Version:         12.2.0 (12.2.0)
Build Info:      JavaApplicationSupport-1450000~1
Code Type:       X86-64 (Native)
Parent Process: launchd [127]
Date/Time:       2013-02-21 17:49:43.369 -0500
OS Version:      Mac OS X 10.6.8 (10K549)
Report Version: 6
Interval Since Last Report:          2712 sec
Crashes Since Last Report:           3
Per-App Crashes Since Last Report:   3
Anonymous UUID:                      383BDFCF-9AA2-4B81-828C-6AD5615B5474
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Crashed Thread: 4
Dyld Error Message:
Symbol not found: _JVMGetLatestJVMInfo
Referenced from: /Users/Admin/UTILITIES/Java/Java Web Start.app/Contents/MacOS/Java Web Start
Expected in: /System/Library/Frameworks/JavaVM.framework/Versions/A/JavaVM

Refresh an open web page on closing an applet launch from Java Web Start

Hi
I launch an aplication via Java Web Start from a link in a web page. I am looking to a solution to refresh my web page when I close my applet.
Thanks in advance to give me the solution or only to let me know if it's possible or not.

everything's possible. but this is not trivial. there is no direct connection between the html page that launched the app and the app. You can create an indirect connection by having the app notify a server process when it closes and having the page periodically polling the server for the app's status.

How to run 64-bit native code with Java Web Start

This question has probably been asked many times, but I couldn't find anything in my searches.
How can I get Java Web Start on a Solaris client (Solaris 10 in this case, with JRE 1.5) to run a java application that includes a 64-bit native code library? The application downloads fine, including the jar file that has the native shared object, but when the native library is loaded by the java application, I get a "wrong ELF class: ELFCLASS64" error.
I assume that is because Web Start is invoking the 32-bit java VM, which can't load a 64-bit library. I tried configuring Java Web Start to use the 64-bit VM (by setting the path to java to ".../jre/bin/sparcv9/java" in the javaws console) but then I get an error that says "Can't load library: .../jre/lib/sparcv9/libdeploy.so".
Does Java Web Start support 64-bit native code, and if so, what do I need to do differently?
Thanks.

No it can't. On the Sun download page of the JRE it says that 64 Bit systems need to use the 32 Bit JRE to execute Plugins - this might be the same for Web Start apps.

Java Web Start opening code not app

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