could not find class referenced from method android java.lang.NoClassDefFoundError

could not find class referenced from method android
java.lang.NoClassDefFoundError

I'm calling for a separate class I have written in same package as my
MainActivity class is saved. but when I run the application it gives me
java.lang.NoClassDefFoundError. I cant understand why another class
defined in same package cannot be identified. I have tried many methods
suggest for java.lang.NoClassDefFoundError but not any of them resolved
the error.
08-26 10:43:27.776: E/dalvikvm(1311): Could not find class
'com.example.hcpandroid.SSLAuthenticate$1', referenced from method
com.example.hcpandroid SSLAuthenticate.authenticate
08-26 10:43:27.786: E/AndroidRuntime(1311): FATAL EXCEPTION: main
08-26 10:43:27.786: E/AndroidRuntime(1311):
java.lang.NoClassDefFoundError: com.example.hcpandroid.SSLAuthenticate$1
08-26 10:43:27.786: E/AndroidRuntime(1311): at
com.example.hcpandroid.SSLAuthenticate.authenticate(SSLAuthenticate.java:86)
08-26 10:43:27.786: E/AndroidRuntime(1311): at
com.example.hcpandroid.LogIn.LogIn(LogIn.java:48)
08-26 10:43:27.786: E/AndroidRuntime(1311): at
com.example.hcpandroid.LogIn$1.onClick(LogIn.java:29)
08-26 10:43:27.786: E/AndroidRuntime(1311): at
android.view.View.performClick(View.java:4128)
08-26 10:43:27.786: E/AndroidRuntime(1311): at
android.view.View$PerformClick.run(View.java:17142)
08-26 10:43:27.786: E/AndroidRuntime(1311): at
android.os.Handler.handleCallback(Handler.java:615)
08-26 10:43:27.786: E/AndroidRuntime(1311): at
android.os.Handler.dispatchMessage(Handler.java:92)
08-26 10:43:27.786: E/AndroidRuntime(1311): at
android.os.Looper.loop(Looper.java:213)
08-26 10:43:27.786: E/AndroidRuntime(1311): at
android.app.ActivityThread.main(ActivityThread.java:4787)
08-26 10:43:27.786: E/AndroidRuntime(1311): at
java.lang.reflect.Method.invokeNative(Native Method)
08-26 10:43:27.786: E/AndroidRuntime(1311): at
java.lang.reflect.Method.invoke(Method.java:511)
08-26 10:43:27.786: E/AndroidRuntime(1311): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809)
08-26 10:43:27.786: E/AndroidRuntime(1311): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)
08-26 10:43:27.786: E/AndroidRuntime(1311): at
dalvik.system.NativeStart.main(Native Method)