EMDK for Java - symbol.Audio

Hello,

currently I am trying to build a little commandline tool which is able to trigger a signal on the device (MT2070).

I downloaded the EMDK for Java and found the JAR-Files und samples.

I now have the following code: 

// TriggerBeep.java

import symbol.Audio

public class TriggerBeep

{

public static void main( String[] args )

{

  int iVersion = 1;

  System.out.println( "TriggerBeep commandline tool" );

  iVersion = symbol.Audio.getVersion();

}

}

compiled with:  javac -cp symbolclasses.jar TriggerBeep.java

executed with:  java TriggerBeep

Exception in thread "main" java.lang.NoClassDefFoundError: symbol/Audio

        at TriggerBeep.main(TriggerBeep.java:9)

Caused by: java.lang.ClassNotFoundException: symbol.Audio

        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)

        ... 1 more

Is there more to add to the option 'cp' to get this code run?

What to change to solve this problem?

Thanks in advance!

greetings from Germany, Ralf...