JAVA_HOME does not point to the JDK : Unable to start google app engine

Question

I get the following errors when i try to run a sample project in netbeans on google app server. The server doesn't start up. How can i resolve these errors if they exist ? I am using netbeans 7.1

BUILD FAILED
W:\UnderTest\NetbeansCurrent\Guestbook\nbproject\build-impl.xml:550: The following error occurred while executing this line:
W:\UnderTest\NetbeansCurrent\Guestbook\nbproject\build-impl.xml:300: Unable to find a javac compiler;
com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK.
It is currently set to "C:\Program Files\Java\jre7"

Did you note that it says JAVA_HOME is pointed to a Java Runtime Environment (JRE), not a Java Development Kit (JDK)? — Greg Kopff, May 28 '12 at 06:34
you might need to point to JDK. Because, JDK is for development, it includes compiler. JRE does not have a compiler. If you dont have JDK, install it. — sgowd, May 28 '12 at 06:37
@Jigar Joshi you've reformatted, but i think _"Perhaps JAVA_HOME does not point to the JDK. It is currently set to "C:\Program Files\Java\jre7"_ is part of the output — Op De Cirkel, May 28 '12 at 06:37
_i have been running my projects from command prompt for some time. and it never gave me a problem even with netbeans_ — Suhail Gupta, May 28 '12 at 06:38

score 4 · Accepted Answer · answered May 28 '12 at 06:36

4

Install jdk and set JAVA_HOME in environments variables to path that you jdk was installed. Currently it points to jre.

answered May 28 '12 at 06:36

alexey28

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[is that ok](http://i49.tinypic.com/14t7seh.jpg). But i have been developing and compiling my java apps from netbeans and also from command prompt.I never got a problem – Suhail Gupta May 28 '12 at 06:50
yes, should be ok. Some application does not nead jdk, jre also contains javac and java to compile and run your application. But gae neads. – alexey28 May 28 '12 at 06:53

score 1 · Answer 2 · answered May 28 '12 at 06:52

Try this- for temporary

Windows

netbeans.exe --jdkhome "c:\JDK\path"

Unix

    netbeans --jdkhome /usr/bin/yourjdk

If you want to set the option permanently, you can do so in the netbeans.conf file. and change .

# Default location of JDK, can be overridden by using --jdkhome <dir>:
netbeans_jdkhome="c:\your\JDK\path"

score 0 · Answer 3 · answered May 28 '12 at 06:41

0

probable solution will be hear : setting jdk path in netbeans or , if you setting JAVA_HOME in windows env then use %JAVA_HOME%

answered May 28 '12 at 06:41

Asraful

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JAVA_HOME does not point to the JDK : Unable to start google app engine

3 Answers3

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