Android, java class not found exception

Question

I developed an android application which includes some classes, when I tried to run application I see this in log Could not find class 'com.voice.NevisaWebService', referenced from method com.voice.Main.upload but application starts, when I do something in app that needs NevisaWebService class this error appears and application stops working java.lang.NoClassDefFoundError: com.voice.NevisaWebService , what does it mean? I have this class in my wokspace and everything is write why does this error appears?

here is full logcat:

Answer 1

Try this:

Go to Project/Properties/Java Build Path/Order and Export -- Make sure there's a check in front of Android Dependencies and the support library, if you use it.Mark all checkboxes.Click on Apply and clean the project.

This worked for me.Hope this helps.

Answer 2

1. Please check whether all your Activities included in the AndroidManifest.xml file otherwise add to it.

2. add environment variable for JAVA path from eg, C:\\Program Files\\Java\\jre6\\bin

Answer 3

检查导入和class.class访问修饰符的可见性必须是public。然后尝试清理和重建。