Celebrate National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

JNLP error

Posted on 2008-11-02
6
Medium Priority
?
566 Views
Last Modified: 2012-05-05
hello there,

i am trying to run my application using jnlp.but i get this error in the console.i can run the application with jar but with jnlp i get this error.please help.

Exception in thread "Thread-17" java.lang.NullPointerException
      at javax.swing.ImageIcon.<init>(Unknown Source)
      at com.FrmSplash.run(FrmSplash.java:11)
      at java.lang.Thread.run(Unknown Source)
0
Comment
Question by:zolf
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
6 Comments
 

Author Comment

by:zolf
ID: 22860716

the line 11 is shown below
JLabel SplashLabel = new JLabel(new ImageIcon(ClassLoader.getSystemResource("images/Splash Screen 2.jpg")));
public void run()
	{
		JLabel SplashLabel = new JLabel(new ImageIcon(ClassLoader.getSystemResource("images/Splash Screen 2.jpg")));
		Dimension screen = 	Toolkit.getDefaultToolkit().getScreenSize();
		

Open in new window

0
 
LVL 7

Expert Comment

by:humanonomics
ID: 22860720
it seems, your application is is not picking up the image file and hence "ClassLoader.getSystemResource("images/Splash Screen 2.jpg")" returns null, which results in that exception.
0
 

Author Comment

by:zolf
ID: 22860737

what do i need to do.please help.below is my jnlp file.the application runs fine using java -jar erp.jar
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="file:///C:/JNLP/">
<information>
  <title>Time Check</title>
  <vendor>Java Developer Connection</vendor>
  <homepage href="/jdc" />
  <description>Demonstration of JNLP</description>
</information>
<offline-allowed/>
<security>
  <all-permissions/>
</security>
<resources>
  <j2se version="1.2+" />
  <jar href="erp.jar"/>
  <jar href="looks-2.2.0.jar"/>
  <jar href="sqljdbc.jar"/>
  <jar href="calendar-0.10.jar"/>
  <jar href="commons-collections-3.2.jar"/>
  <jar href="commons-logging-1.1.jar"/>
  <jar href="iText-2.1.3.jar"/>
  <jar href="jasperreports-3.0.0.jar"/>
  <jar href="jcalendar-1.3.2.jar"/>
  <jar href="looks-2.2.0.jar"/>
  <jar href="validation-2.0.1.jar"/>
</resources>
<application-desc main-class="com.MainForm" />
</jnlp>

Open in new window

0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 

Author Comment

by:zolf
ID: 22860738

i also removed the space between the image file name, just in case.but no luck
0
 
LVL 7

Expert Comment

by:humanonomics
ID: 22860856
Please give the directory structure
0
 
LVL 28

Accepted Solution

by:
rrz earned 2000 total points
ID: 22861958
Did you try ?
   ClassLoader cl = this.getClass().getClassLoader();
   Icon icon  = new ImageIcon(cl.getResource("images/SplashScreen2.jpg"));
see
http://java.sun.com/javase/6/docs/technotes/guides/javaws/developersguide/development.html#retrieving
0

Featured Post

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Java contains several comparison operators (e.g., <, <=, >, >=, ==, !=) that allow you to compare primitive values. However, these operators cannot be used to compare the contents of objects. Interface Comparable is used to allow objects of a cl…
Introduction This article is the first of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article explains our test automation goals. Then rationale is given for the tools we use to a…
This tutorial covers a practical example of lazy loading technique and early loading technique in a Singleton Design Pattern.
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.
Suggested Courses

730 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question