Exception in thread "main" java.lang.UnsatisfiedLinkError: no jpcap in java.library.path

java netbeans jpcap
Asad Ikram picture Asad Ikram · Dec 10, 2012 · Viewed 11.8k times · Source

i am using netbeans ide and trying to capture packets using jpcap library. my program used to run correctly before bu suddenly this error 

Exception in thread "main" java.lang.UnsatisfiedLinkError: no jpcap in java.library.path

is appearing. i have tried ds on my other computer too but in vain .. i have added jpcap library and before installing i cleared older version completely. have done everythng available .i am seriously in trouble

please help!

Answer

Isaac picture Isaac · Dec 10, 2012

Add this to the beginning of your program:

System.out.println(System.getProperty("java.library.path"));

You should get a list of directories. Your jpcap's DLL (or so on UNIX) must be in one of these directories in order for your program to work. If it is not there, then either:

  • Add the directory containing that DLL/so to your system's PATH (preferred).
  • Add the DLL/so into one of the directories printed.

Related questions

Popup Message boxes

I am unsure of how to code popup message box in my methods. public String verify(){ String result = "failed"; int authcode = staffBean.getVerifyCodeByName(getLoginUserName()); if (code == authcode){ result ="success"; } else{ //statement to popup an error message box } return result; } I …

Read More
What is the default username and password in Tomcat?

I installed Netbeans and tryed to access the server's manager using: (id/pass)manager/manager, admin/admin, system/password... None of them worked.

Read More
Where should I put the log4j.properties file?

I wrote a web service project using netbeans 6.7.1 with glassfish v2.1, put log4j.properties to the root dir of project and use: static Logger logger = Logger.getLogger(MyClass.class); in Constructor: PropertyConfigurator.configure("log4j.properties"); and in functions: …

Read More