Domenic Domenic - 3 months ago 34
Java Question

javac not working in windows command prompt

I'm trying to use javac with the windows command prompt, but its not working.

After adding the directory "C:\Program Files\Java\jdk1.6.0_16\bin\" to the end of the environment path variable, the java command works fine, but using javac gives me the error:

'javac' is not recognized as an internal or external command, operable program or batch file.


Any ideas? Thanks.

Answer

If you added it in the control panel while your command prompt was open, that won't affect your current command prompt. You'll need to exit and re-open or simply do:

set path="%path%;c:\program files\java\jdk1.6.0_16\bin"

By way of checking, execute:

echo %path%

from your command prompt and let us know what it is.

Otherwise, make sure there is a javac in that directory by trying:

"c:\program files\java\jdk1.6.0_16\bin\javac.exe"

from the command prompt. You can also tell which executable (if any) is being used with the command:

for %i in (javac.exe) do @echo %~$PATH:i

This is a neat trick similar to the which and/or whence commands in some UNIX-type operating systems.

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