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From Michael Ludwig <>
Subject Re: Question with error: Unable to locate tools.jar
Date Thu, 30 Dec 2010 17:45:01 GMT
Jeff Spence schrieb am 30.12.2010 um 12:31 (-0500):
>  "ant compile" and  I get the error:
>   Unable to locate tools.jar. Expected to find it in C:\Program
> Files\Java\jre6\lib\tools.jar
>   Buildfile: build.xml does not exist!
>   Build failed

That's not a JDK, just the JRE: it has no developer tools.

> I set my system path to C:\Program Files (x86)\Java\jdk1.6.0_21\lib;
> to see if this would help but it didn't.

So you have a JDK installed. But the lib/ directory is not the one to
add to your path. Use the bin/ directory if you want to do that.

> Do I need to download a different version of the jdk that will
> install in the Program Files dir for win64bit for example?

You need a JDK that works for your platform.

> Or, is there a place to change where the system looks for tools.jar.

> I am using Windows ver 6.1.7600

At the command prompt, enter:

  set java

Is JAVA_HOME set? If not, set it in your desktop using sysdm.cpl (enter
that in the little window that opens on hitting Windows-R), and be sure
to set it to:

  C:\Program Files (x86)\Java\jdk1.6.0_21

Then, try again.

Michael Ludwig

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