title: Maven unable to locate Javac Compiler - Unable to locate the Javac Compiler in:
body: <p>When I try to make maven-install on my gwt-maven Projekt i get this Error:</p>
  
  <pre><code>[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project MyProject: Compilation failure
  [ERROR] Unable to locate the Javac Compiler in:
  [ERROR] C:\Development\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] -&gt; [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
  </code></pre>
  
  <p>But <code>JAVA_HOME</code> is set. When I run <code>cmd "echo %JAVA_HOME%"</code> it says <code>C:\Development\jdk7</code> and this is correct.
  Dont know why he is searching for <code>C:\Development\java jre7</code>.....</p>