Error running AWS SES sample - amazon-web-services

Question

I'm trying to run the sample program here http://docs.aws.amazon.com/ses/latest/DeveloperGuide/send-using-smtp-java.html
here's the command output...
$ java AmazonSESSample -cp "javamail-1.4.3/mail.jar"
java.lang.NoClassDefFoundError: javax/mail/Address
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
at java.lang.Class.getMethod0(Class.java:3018)
at java.lang.Class.getMethod(Class.java:1784)
at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544)
atsun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526)
Caused by: java.lang.ClassNotFoundException: javax.mail.Address
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 7 more
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main"
I tried to Google for answers by using this search string...
search string = java mail.jar "Error: A JNI error has occurred, please check your installation and try again"
i didn't see anything useful in the search results :-(
Any ideas?

Answer 1

I think the JAR file (javamail-1.4.3/mail.jar) you indicated is not being found..
java AmazonSESSample -cp "javamail-1.4.3/mail.jar"
Try providing the full path like below (below is an example only)
java AmazonSESSample -cp "/usr/lib/javamail-1.4.3/mail.jar"
UPDATE: On Windows try the below
java AmazonSESSample -classpath "C:\Users\MichaelDocuments\GitHub\guesstimate\scratch\javamail-1.4.3\mail.jar"

Answer 2

Ok so the answer is that the classpath option was AFTER the main class. So the -cp and jar value are being passed as 'args' to the 'main' method - doh!!!!!!!!!!!!!!
By simply moving this option as shown below, the jar is loaded and the class is found as expected..
A useful outcome of this frustrating puzzle is that i discovered '-verbose:class' which will be useful for other problems in the future i'm sure :)
$ java -verbose:class -cp '.;mail.jar' AmazonSESSample | grep Session
[Loaded javax.mail.Session from file:/C:/Users/Michael/Documents/GitHub/guesstimate/scratch/mail.jar]
[Loaded javax.mail.Session$1 from file:/C:/Users/Michael/Documents/GitHub/guesstimate/scratch/mail.jar]
[Loaded javax.mail.Session$3 from file:/C:/Users/Michael/Documents/GitHub/guesstimate/scratch/mail.jar]
[Loaded javax.mail.Session$5 from file:/C:/Users/Michael/Documents/GitHub/guesstimate/scratch/mail.jar]
[Loaded javax.mail.Session$4 from file:/C:/Users/Michael/Documents/GitHub/guesstimate/scratch/mail.jar]
[Loaded javax.mail.Session$2 from file:/C:/Users/Michael/Documents/GitHub/guesstimate/scratch/mail.jar]
Michael#mikeToshSpare /cygdrive/c/Users/Michael/Documents/GitHub/guesstimate/scratch
$ java -verbose:class AmazonSESSample -cp '.;mail.jar' | grep Session
Exception in thread "main" java.lang.NoClassDefFoundError: javax/mail/Session
at AmazonSESSample.main(AmazonSESSample.java:56)
Caused by: java.lang.ClassNotFoundException: javax.mail.Session
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 1 more