AppEngine SDK 1.8.7 failed to install in Eclipse 4.2 (Juno) on OSX Mountain Lion

0
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I am trying to work with Google App Engine. I have Eclipse Juno on my MacBook (Mountain Lion), and I have upgraded my Java to 1.7.0_45. I tried following instructions as per Google on its Developers link to add the Google SDK to my Eclipse. When I open my preferences in Eclipse, it shows: Failed to initialize App Engine SDK 1.8.7

How do I resolve this issue? What is it that I am doing wrong or have missed doing??

I have tried to break my head on this and even tried to search for solutions but did not find any! Help!

2
eclipsegoogle-app-engine
Can you provide the stack trace generated in the eclipse logs? – Harsha R
Although it seems that you are using Java, but which SDK language that you downloaded: PHP / Java / Phyton / Go ? – Rudy
I havent run the project in eclipse. It simply is an error on the project which I am trying to resolve through the preferences. – Anan
I have downloaded the Java SDK for GAE – Anan
Exception in thread "Thread-1" java.lang.NoClassDefFoundError: com/google/appengine/tools/development/DevAppServerMain Caused by: java.lang.ClassNotFoundException: com.google.appengine.tools.development.DevAppServerMain at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) – Anan

2 Answers

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I had the same problem myself, and after installing Java 7 JDK from http://www.oracle.com/technetwork/java/javase/, I followed the steps bellow and the "Failed to initialize..." error disappeared:

  1. Under Eclipse / Preferences / Java / Installed JREs, click Add, select Mac OS X VM, then click Next.
  2. Enter "/Library/Java/JavaVirtualMachines/1.7.0.jdk/Contents/Home" as the JRE home directory, as well as a JRE name, click Finish.
  3. Check the box next to the new JRE that you just added and then click OK.
  4. Under Eclipse / Preferences / Java / Compiler, select 1.7 from the "Compiler compliance level" drop-down list and click Ok.
0
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Try uninstalling AppEngine SDK 1.8.7 from Eclipse. Here is a more detailed installation guide for the Google Plugin for Eclipse on the Juno (3.8/4.2) version. You need to select the Google Plugin for Eclipse and the SDK for AppEngine as a minimum. Currently you will get AppEngine SDK 1.8.9. Good luck!

If that fails try with a newer Eclipse (4.3 Kepler).