Hi,
FWIW, our official maven plugin also supports Java 7. Please use the
following configurations:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<version>2.5.1</version>
<artifactId>maven-compiler-plugin</artifactId>
*<configuration>*
* <source>1.7</source>*
* <target>1.7</target>*
* </configuration>*
</plugin>
<plugin>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>${appengine.target.version}</version>
*<configuration>*
* <useJava7>true</useJava7>*
* </configuration>*
</plugin>
On Thu, Mar 14, 2013 at 6:56 PM, Ludovic Champenois <l...@google.com> wrote:
> Hi,
> A quick status on the Java 7 migration: No news is good news right?
> Applications (very large and small) having tried or even completely
> upgraded to the Java 7 runtime have not discovered runtime issue: this is
> great news!
> More applications every single day, and counting...
>
> If you have not started testing your application with the new Java 7
> runtime, this is the right time now to do it either with the current 1.7.5
> release, or the coming 1.7.6 release (we push a preview SDK earlier this
> week).
>
> Cheers.
>
> On Wednesday, February 27, 2013 10:37:01 AM UTC-8, Ludovic Champenois
> wrote:
>>
>> Hi,
>>
>> As part of Google App Engine 1.7.5 release on February 13, 2013, we
>> introduced Preview support of App Engine Java 7 runtime. In early April,
>> Google will commence upgrading our internal applications from Java 6 to
>> Java 7. In conjunction with this effort, we highly recommend that all of
>> our App Engine customers begin testing and eventually migrate their
>> applications to Java 7 runtime within the next couple of months.
>>
>> Please find below some additional technical information to assist with
>> testing and migrating your application to Java 7 environment:
>>
>> *Java 6 and Java 7 Compatibility*
>>
>> In general, Java 7 runtime is backwards compatible with Java 6, and will
>> run all pre-existing Java applications that did not rely on
>> implementation-specific functionality. Please refer to the Oracle white
>> paper on Java 7 and Java
>> 6<http://www.oracle.com/technetwork/java/javase/compatibility-417013.html>compatibility
>> for additional details.
>>
>> *Procedure for Testing*
>>
>> For all your Java App Engine applications, here are the steps for testing
>> in the new Java 7 environment.
>>
>> 1. App Engine can support multiple live versions of a given application.
>> It is best to create a new version of your app and deploy it to a Java 7
>> runtime.
>>
>> 2. You can deploy to a new Java 7 runtime with one of the following
>> steps:
>>
>> a) Recompile your Java Application with a full JDK 7 compiler. You can
>> test it with the GAE 1.7.5 SDK, and when ready, use the regular appcfg SDK
>> tool that will detect that the Java byte code is Java 7 compliant and will
>> use a Java7 runtime for this application version.
>>
>> b) If you are still compiling your Java application with a JDK 6
>> compiler, you can deploy to the Java 7 runtime by adding the *--use_java7
>> * flag to the appcfg SDK tool.
>>
>> Please review the Google Java 7
>> Considerations<https://developers.google.com/appengine/docs/java/java7>paper
>> for additional information on configuring Java 7.
>>
>> 3. Assuming you have your default application version still running with
>> a Java 6 runtime and a new version running in Java 7, you can use the
>> Google App Engine Traffic Splitting feature to slowly ramp up traffic on
>> the new Java 7 runtime. Consider starting with 5%, then increase gradually
>> to 10%, 20%, and so on as your app is behaving as expected. See our Traffic
>> Splitting
>> document<https://developers.google.com/appengine/docs/adminconsole/trafficsplitting>for
>> more information about this tool.
>>
>> Thanks for spending the time to make sure your application is Java 7
>> ready now. Only a very few incompatible behaviors may have to be fixed in
>> your applications.
>>
>>
>>
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>
--
Takashi Matsuo | Developers Advocate | tmat...@google.com
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