up vote 1 down vote favorite

I am trying to run some Java EE examples. Ant is suggesting: "Perhaps JAVA_HOME does not point to the JDK. It is currently set to "C:\Program Files\Java\jre7"

My JAVA_HOME variable is: C:\Program Files\Java\jdk1.7.0_03 when i look at my windows 7 variables

However, my path is (notice the jdk1.6.0_26):

%M2_HOME%\bin;%ANT_HOME%\bin;%JAVA_HOME%\bin;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\Program Files\Microsoft Application Virtualization Client;%M2%;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\TortoiseSVN\bin;%GLASSFISH%;%GLASSFISH_PARENT%;

PATH=C:\Maven\apache-maven-2.2.1\bin;C:\Ant\apache-ant-1.8.2\bin;**C:\Program File s\Java\jdk1.6.0_26\bin;**C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C :\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Microsoft Applicatio n Virtualization Client;C:\Maven\apache-maven-2.2.1\bin;C:\Program Files\QuickTi me\QTSystem\;C:\Program Files\TortoiseSVN\bin;C:\glassfish3\glassfish\bin;C:\gla ssfish3\bin;C:\Sun\jwsdp-2.0\jwsdp-shared\bin

Any suggestions? I'm lost. Do I have to do anything special to get windows to save my path?

Thanks

C:\javaeetutorial5\examples\web\hello2>ant
Unable to locate tools.jar. Expected to find it in C:\Program Files\Java\jre7\li
b\tools.jar
Buildfile: C:\javaeetutorial5\examples\web\hello2\build.xml

-pre-init:

init:

default-ear:

-pre-compile:

bpp-actual-compilation:
     [echo] Compiling hello2
     [echo] javaee.classpath.prefix is: C:\glassfish3/lib
     [echo] is.glassfish.v3 is: ${is.glassfish.v3}
    [javac] C:\javaeetutorial5\examples\bp-project\command-line-ant-tasks.xml:93
: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=las
t; set to false for repeatable builds

BUILD FAILED
C:\javaeetutorial5\examples\bp-project\command-line-ant-tasks.xml:93: 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"

Total time: 0 seconds
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2 Answers

up vote 2 down vote

For eclipse

  • Right Click build.xml ---> Build path ---> configure buildpath ---> select libraries tab
  • click "Add library" ---> double click on [jre system library ] ---> environments ---> installed jres ---> Add ---> standard vm
  • click on directory ---> Browse upto jdk [C:\Program Files\Java\jdk1.7.0_01]
  • finish
  • change the selection jre to jdk ---> click ok
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up vote 1 down vote

You need to point JAVA_HOME to a JDK of Java. As you can clearly read from the error message,

Currently it is pointed to a JRE (Java Runtime Environment):

It is currently set to "C:\Program Files\Java\jre7"

You can download the jdk here:
http://www.oracle.com/technetwork/java/javase/downloads/index.html

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I figured it out. For some reason I had to log in and out for my PATH to set itself to the jdk1.7 – eric f Mar 29 '12 at 22:11
seems , the problem is with OS registry settings – JavaGeek Dec 8 '12 at 21:35
eric clearly states "JAVA_HOME variable is: C:\Program Files\Java\jdk1.7.0_03" – Kevin Ortman Dec 19 '12 at 0:07
@KevinOrtman no it is not: It is currently set to "C:\Program Files\Java\jre7" last line in the log. – oers Dec 19 '12 at 6:39

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