Hi,
I replied to this yesterday, did
you get the message?
I had a similar problem, and it was because the eclipse
preference was set to the jre not the installed jdk.
Window > Preferences > java > Installed JREs
Add the jre in your jdk and set this to the default.

For good measure I also have the user system variable
JAVA_HOME set to C:\Program Files\Java\jdk1.6.0_39\ (Note: included the
jdk1.xxx at the end) ...and the system variable PATH ending in ;C:\Program
Files\Java\jdk1.6.0_39\bin
Regards,
Judith
From: lyo-dev-bounces@xxxxxxxxxxx
[mailto:lyo-dev-bounces@xxxxxxxxxxx] On Behalf Of roopa.venu@xxxxxxxxxxxxx
Sent: 12 March 2013 06:18
To: lyo-dev@xxxxxxxxxxx
Subject: [lyo-dev] Unable to do Maven install
Hi,
Unable to do Maven install on
OSLC4JCoreRelEng – pom.xml file.
I get the following error messages.
Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile)
on project oslc4j-core: Compilation failure [ERROR] Unable to locate the Javac
Compiler in:
[ERROR] C:\Program
Files\Java\jre7\..\lib\tools.jar [ERROR] Please ensure you are using JDK 1.4 or
above and [ERROR] not a JRE (the com.sun.tools.javac.Main class is required).
[ERROR] In most cases you can change the
location of your Java [ERROR] installation by setting the JAVA_HOME environment
variable.
[ERROR] -> [Help 1]
[ERROR]
COMPILATION ERROR :
[INFO]
-------------------------------------------------------------
[ERROR] Unable to locate the Javac
Compiler in:
C:\Program
Files\Java\jre7\..\lib\tools.jar Please ensure you are using JDK 1.4 or above
and not a JRE (the com.sun.tools.javac.Main class is required).
In most cases you can change the
location of your Java installation by setting the JAVA_HOME environment
variable.
[INFO] 1 error
Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered
while building the effective model for
org.eclipse.lyo.oslc4j.core:oslc4j-registry:war:1.0
[WARNING] 'build.plugins.plugin.version'
for org.mortbay.jetty:jetty-maven-plugin is missing. @ line 80, column 11
[WARNING] [WARNING] Some problems were encountered while building the effective
model for org.eclipse.lyo.oslc4j.samples:oslc4j-stockquote-sample:war:1.1
[WARNING] 'build.plugins.plugin.version'
for org.mortbay.jetty:jetty-maven-plugin is missing. @ line 81, column 11
[WARNING] [WARNING] Some problems were encountered while building the effective
model for org.eclipse.lyo.oslc4j.samples:oslc4j-test-sample:war:1.1
[WARNING] 'build.plugins.plugin.version'
for org.mortbay.jetty:jetty-maven-plugin is missing. @ line 87, column 11
[WARNING] [WARNING] It is highly recommended to fix these problems because they
threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven
versions might no longer support building such malformed projects.
[WARNING]
I am using JDK 1.7 and set
CLASSPATH=C:\Program Files\Java\jdk1.7.0_17\bin and JAVA_HOME=C:\Program
Files\Java
Request your help in rectifying the
same.
Thanks,
Roopa Venu
Mobile - 9945656908
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