I get an exception using java on android (java.lang.NoClassDefFoundError), why?

Question

This is the line I run:

AudioInputStream clip1 = AudioSystem.getAudioInputStream(new File(wavFile1));

This is the exception I get (From LogCat)

Answer 1

AudioSystem is part of JavaSound, and JavaSound is part of the desktop JVM/SDK. JavaSound is NOT present in the Android JVM/SDK, so your old code will not compile on any current Android SDK.

See http://developer.android.com/guide/topics/media/index.html for the Android audio functionality outline: you will need to port your old code to use the Android SDK classes.

Answer 2

It clearly means class AudioSystem is not present in your project. May be you were referencing some libraries which may be missing now.

Answer 3

The problem is that the classpath isn't set correctly. See this question for some solutions.