title: java.lang.NoClassDefFoundError in junit
body: <p>I am getting this error in java in my junit test code. I looked up on the net and it says that I need to add the junit.jar in the classpath.</p>
  
  <p>In Eclipse I have added it in the classpath of Project Properties windows but I still get initialisation error. What should I do..?</p>
  
  <p>This is the complete trace of the error:</p>
  
  <pre><code>java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing
      at java.lang.ClassLoader.defineClass1(Native Method)
      at java.lang.ClassLoader.defineClassCond(Unknown Source)
      at java.lang.ClassLoader.defineClass(Unknown Source)
      at java.security.SecureClassLoader.defineClass(Unknown Source)
      at java.net.URLClassLoader.defineClass(Unknown Source)
      at java.net.URLClassLoader.access$000(Unknown Source)
      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 org.junit.internal.builders.JUnit4Builder.runnerForClass(JUnit4Builder.java:13)
      at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
      at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
      at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
      at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:24)
      at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.&lt;init&gt;(JUnit4TestReference.java:32)
      at org.eclipse.jdt.internal.junit4.runner.JUnit4TestClassReference.&lt;init&gt;(JUnit4TestClassReference.java:25)
      at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:41)
      at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:31)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:452)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
  Caused by: java.lang.ClassNotFoundException: org.hamcrest.SelfDescribing
      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)
      ... 25 more
  </code></pre>