java - Maven Package Compilation Error

Question

i created a webapp project using maven in eclipse. when i run the command mvn package in command prompt it showing folowing error.

[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.310s
[INFO] Finished at: Tue Mar 05 14:32:23 IST 2013
[INFO] Final Memory: 16M/218M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.0:compile (default-compile) on project  Compilation fa
ilure
[ERROR] ***No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?***
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

i tried to change jdk and jre. but not working. still it shows same error

Answer 1

In Windows 7 - 64 bit, there is a permissions problem which prevents the installer from unpacking the file C:Program FilesJavajdk1.6.xxlibools.jar into your local. This jar file is what maven-compiler-plugin version 3.x uses instead of the usual javac

Solution: Run, as an administrator, the Java JDK installer! And make sure the tools.jar is sitting in the C:Program FilesJavajdk1.6.xxlib

In case you are using m2e maven integration plugin, you want to see the file is visible to Eclipse via the following steps inside Eclipse:

• Go to Window -> Preferences -> Java -> installed JREs
• Select the JDK you are using (C:Program FilesJavajdk1.6.xx)
• Press Edit to see the list of jars including tools.jar, OW you can add it as Add External JAR

Then configure the maven run through these steps:

• Run->Run configurations->Fill in Name, Base directory and Goals.
• Then in the same window move to the JRE tab and point to the JDK jdk1.6.xx