Jar file not loading

Question

I have jar file which is signed on my local machine. Its working fine in local machine. When I upload it to the server it shows some error like

load: class com.trusm.tru.ReadNFCSerialNumber not found.
java.lang.ClassNotFoundException: com.trusm.tru.ReadNFCSerialNumber
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed:http://xxx.xxx.xxx.xxx/popit/popit/com/trusm/tru/ReadNFCSerialNumber.class
at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
... 7 more
Exception: java.lang.ClassNotFoundException: com.trusm.tru.ReadNFCSerialNumber

Can any one help me on this???

Answer 1

Might be you have added the jar using external refrences, Check that jar is available in the deployed folder or not or you may create lib folder into root folder and add jar there...

Answer 2

　open HTTP connection failed:　http://xxx.xxx.xxx.xxx/popit/popit/com/trusm/tru/ReadNFCSerialNumber.class

Looks like a network problem.

Answer 3

Use the appletviewer on the HTML file you have created, as it gives much better insight into what goes on.

Answer 4

I think the signing has caused the problems.

When i signed the jar in the server instead of my local machine it works like a charm...

Answer 5

The stack trace:

Caused by: java.io.IOException: open HTTP connection failed:http://xxx.xxx.xxx.xxx/popit/popit/com/trusm/tru/ReadNFCSerialNumber.class

suggests that the HTTP path to ReadNFCSearialNumber.class doesn't exist. Try and put that URL link on the browser and if you get a HTTP 404, then you know that the path is the problem.

Other than that, we don't know how you structured your project, so we can't guess here.