jgrapht-jdk1.6 "HelloJGraphT.java" compilation problem

JGraphT package includes some examples to experiment oneself. HelloJGraphT.java is one of them. I can run it, without any error, in Netbeans6.0.1. But, when i use dos command prompt in the following way:

javac -cp jgrapht-jdk1.6.jar HelloJGraphT.java

it compiles. But, if i run it using:

java HelloJGraphT

it gives the following errors:

Exception in thread "main" java.lang.NoClassDefFoundError: org/j开发者_如何学Gographt/Graph Caused by: java.lang.ClassNotFoundException: org.jgrapht.Graph at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClassInternal(Unknown Source)

Any clue?

I'm using jdk 1.6

You need to import the JGraphT library to your project.