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Simple reusable GMailJava class for sending Aysnc emails via Gmail 




Simple reusable GMailJava class for sending Aysnc emails. Copy the class, change the username/password and use it in your next project. 




   Step 1: Add dependencies to your maven project


    <!-- mail -->
    <dependency>
        <groupId>javax.mail</groupId>
        <artifactId>mail</artifactId>
        <version>1.4</version>
    </dependency>
    
    <!-- Apache Commons Validator -->
    <dependency>
        <groupId>commons-validator</groupId>
        <artifactId>commons-validator</artifactId>
        <version>1.4.0</version>
    </dependency>

    

    Step 2: Copy EmailService.java to your project & set username/password

    code: https://github.com/intesar/GMailJava/blob/master/src/main/java/com/bia/gmailjava/EmailService.java

Note: Enable pop, IMAP inside GMail --> Settings --> Forwarding and POP / IMAP

    Sample code

      EmailService emailService = EmailService.getInstance();
      emailService.sendEmail("<toemail>", "<subject>", "<body>");

    Design Decisions
     No interface is define to keep simpler eco-system, feel free to add yours if required and refactor code accordingly
     Pattern's & Technique's used - Singleton, Command, Async, Inner class






Also you can clone it on github https://github.com/intesar/GMailJava



Comments

Anonymous said…
In your emailservice class, u are calling shutdown instead of finalize. why
May 15, 2012 at 7:49 PM
Intesar Shannan Mohammed said…
ExecutorService needs to shutdown when EmailService is no longer required this can happen when Web-Application is undeployed or App is terminated and if this not done it will leak out "Threads".

So extra shutdown() method is there incase developer decides to use it in ServletContextListener.contextDestroyed()
May 15, 2012 at 9:13 PM
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