JNLP error

Posted on 2008-11-02
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 Source)
Question by:zolf
  • 3
  • 2

Author Comment

Comment Utility

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();


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Expert Comment

Comment Utility
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.

Author Comment

Comment Utility

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/">


  <title>Time Check</title>

  <vendor>Java Developer Connection</vendor>

  <homepage href="/jdc" />

  <description>Demonstration of JNLP</description>







  <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"/>


<application-desc main-class="com.MainForm" />


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Author Comment

Comment Utility

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

Expert Comment

Comment Utility
Please give the directory structure
LVL 27

Accepted Solution

rrz earned 500 total points
Comment Utility
Did you try ?
   ClassLoader cl = this.getClass().getClassLoader();
   Icon icon  = new ImageIcon(cl.getResource("images/SplashScreen2.jpg"));

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