please can anyone explain this error in logcat

Question

06-26 17:07:09.898: E/AndroidRuntime(380): FATAL EXCEPTION: main
06-26 17:07:09.898: E/AndroidRuntime(380): java.lang.NoClassDefFoundError: org.mythrii.email.Mail
06-26 17:07:09.898: E/AndroidRuntime(380):  at org.mythrii.email.Email$1.onClick(Email.java:19)
06-26 17:07:09.898: E/AndroidRuntime(380):  at android.view.View.performClick(View.java:2485)
06-26 17:07:09.898: E/AndroidRuntime(380):  at android.view.View$PerformClick.run(View.java:9080)
06-26 17:07:09.898: E/AndroidRuntime(380):  at android.os.Handler.handleCallback(Handler.java:587)
06-26 17:07:09.898: E/AndroidRuntime(380):  at android.os.Handler.dispatchMessage(Handler.java:92)
06-26 17:07:09.898: E/AndroidRuntime(380):  at android.os.Looper.loop(Looper.java:123)
06-26 17:07:09.898: E/AndroidRuntime(380):  at android.app.ActivityThread.main(ActivityThread.java:3683)
06-26 17:07:09.898: E/AndroidRuntime(380):  at java.lang.reflect.Method.invokeNative(Native Method)
06-26 17:07:09.898: E/AndroidRuntime(380):  at java.lang.reflect.Method.invoke(Method.java:507)
06-26 17:07:09.898: E/AndroidRuntime(380):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
06-26 17:07:09.898: E/AndroidRuntime(380):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
06-26 17:07:09.898: E/AndroidRuntime(380):  at dalvik.system.NativeStart.main(Native Method)

Shouldn't `org.mythrii.email.Mail` be `org.mythrii.email.Email`? — pawelzieba, Jun 26 '12 at 11:57
thanks for your reply ya Mail.java is present in that file mail code is present — raju, Jun 26 '12 at 11:59
ya iam using external lib file Mail.jar,activation.jar and additional.jar files — raju, Jun 26 '12 at 12:02
[Follow the steps properly](http://stackoverflow.com/a/2033124/940096) — Praveenkumar, Jun 26 '12 at 12:03
Is that from a library? If it is, the library jar needs to be in the `/libs` directory. — Barak, Jun 26 '12 at 12:04
Try to clean your project. Or try to restart your work-space and run it again. — Praveenkumar, Jun 26 '12 at 12:15

score 3 · Accepted Answer · answered Jun 26 '12 at 12:10

3

The solution to this problem is to create a folder named "libs" in the project directory and copying all the external jar files there.

For further explanation, you can refer to this link.

http://tools.android.com/recent/dealingwithdependenciesinandroidprojects

answered Jun 26 '12 at 12:10

Swayam

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i already created lib folder and add all jar files but no use – raju Jun 26 '12 at 12:12
the name of the folder should be "libs" – Swayam Jun 26 '12 at 12:13
1

If it still does not work, try adding the jar file to the project build path by right clicking on the jar file and "Add it to build". – Swayam Jun 26 '12 at 12:14

score 1 · Answer 2 · answered Jun 26 '12 at 12:05

I think what you face is that your code compiles , but @ run time it crashes . How do i solve this , create a libs folder in your project inside eclipse(if its not exist) and add the jar file that contains the org.mythrii.email.Mail class inside the libs folder , Then run you app .

please can anyone explain this error in logcat

2 Answers2