问题
...and that's wrong.
Here's the error I get:
BUILD FAILED C:_TraderPlatform\Clients\Open\Open\Java\Applets\PPDataTransporter\nbproject\build-impl.xml:338: The following error occurred while executing this line: C:_TraderPlatform\Clients\Open\Open\Java\Applets\PPDataTransporter\nbproject\build-impl.xml:158: 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\jre6"
I've set an environment variable called JAVA_Home to point to: "C:\Program Files\Java\jdk1.6.0_12"
Javac.exe is definitely in C:\Program Files\Java\jdk1.6.0_12\bin
I've got %JAVA_HOME%\Bin in my PATH variable.
I've mucked around with the various 'JavaHome' settings under HKLM\SOFTWARE\JavaSoft and I'm now utterly stuck.
All I wanted to do was build a Java applet from the command line using the build.xml that netbeans had knocked up for the project.
Any ideas anybody?
回答1:
Well ANT now works.
What did I do?
I removed it from c:\program files and 'reinstalled' it into "c:\ant"
Seems like it doesn't like non 8.3 filenames or directories.
Funnily enough I did this only because I misread the part of the manual that suggested ANT shouldn't be in non 8.3 style locations on 95/98/ME. I didn't spot the OS reference and gave it a go. I'm running Vista.
Oh well...
Thanks for your help guys.
回答2:
In eclipse set the installed JRE setting to the JDK - in the project (project properties -> Java Build Path-> Libraries), or global default in preferences (Java->Installed JREs). The eclispe setting is stronger than the system variable.
回答3:
Just include tools.jar on the ant classpath, wherever it is installed.
回答4:
You need to check that the variable name is JAVA_HOME all uppercase. Also, run path from the command line and ensure that the path statement has the correct value for JAVA_HOME.
回答5:
What build process are you running? Is one of the build scripts setting JAVA_HOME?
回答6:
OK, guys, for Windows 7 it needs the JAVA_HOME as a Windows Environmental Variable, I've also added C:\Program Files\Java\jdk1.7.0_03\ and C:\Program Files\Java\jdk1.7.0_03\bin to PATH, restarted Eclipse, now it works.... Well I have other problems though :D
来源：https://stackoverflow.com/questions/1063832/ant-cant-find-javac-no-matter-what-i-do-it-always-claims-java-home-is-c-prog