yet another: Exception in thread "main" java.lang.NoClassDefFoundError
<p>I have a common problem but the common solutions seems don't work for me.</p>

<p>I have a file called test.java in my current directory with others class files in the myclasses directory. Namely if i type </p>

<pre><code>ls:
myclasses  test.java
</code></pre>

<p>I type:</p>

<pre><code>  javac test.java
</code></pre>

<p>and all compile fine.</p>

<p>When i try to execute test.class and then type:</p>

<pre><code>  java test
</code></pre>

<p>i get:</p>

<pre><code>Exception in thread "main" java.lang.NoClassDefFoundError: test (wrong name: myclasses/test)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: test.  Program will exit.
</code></pre>

<p>I guess that this means that java can't locate the test.class file. But why? the file is in the current directory and all classes are in the myclasses directory. I have tried different combinations of flags (-cp , -d -sourcepath) and i have moved the test.class around the directories.</p>

<p>Where is the mistake?</p>
