Compiling and running using external jar files

Question

I am able to compile the program SendEmail.java, but I can't figure out why isn't it running. Here is the program:

C:\6sem>javac -cp "C:\Program Files (x86)\Java\jre7\javamail-1.4.7\mail.jar;C:\Program Files (x86)\Java\jre7\javamail-1.4.7\activation.jar" SendEmail.java

C:\6sem>java -cp "C:\Program Files (x86)\Java\jre7\javamail-1.4.7\mail.jar;C:\Program Files (x86)\Java\jre7\javamail-1.4.7\activation.jar" SendEmail

Error: Could not find or load main class SendEmail

Kindly help on how to fix this error.

score 1 · Accepted Answer · answered Mar 09 '15 at 15:16

1

You need to specifiy the full name of the class with the package name. This looks like the following example:

java -cp "C:\Program Files (x86)\Java\jre7\javamail-1.4.7\mail.jar;C:\Program Files (x86)\Java\jre7\javamail-1.4.7\activation.jar" com.company.dummy.SendEmail

answered Mar 09 '15 at 15:16

René Winkler

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can you please specify what is com.company.dummy ? – JAME Mar 09 '15 at 15:18
It is the package of your class. It's defined on top of the .java file (`package com.company.dummy;`). – carcaret Mar 09 '15 at 15:20
@Rene still not working ? how to fix this problem ..kindly help me. – JAME Mar 09 '15 at 15:42

score 0 · Answer 2 · answered Mar 09 '15 at 15:48

It happens because of the classPath issue.

Probably SendMail exists in two or more places, but in different Packages

Try this:-

java -cp "C:\Program Files (x86)\Java\jre7\javamail-1.4.7\mail.jar;C:\Program Files (x86)\Java\jre7\javamail-1.4.7\activation.jar" your.actual.class.is.here.SendEmail

Compiling and running using external jar files

2 Answers2