[insanepenguin]

Hi I can compile program on Vista no problem but when I try to run javac on a win7 machine I get this:

Quote

C:\Program Files\Java\jdk1.6.0_21>C:\Program Files\Java\jdk1.6.0_21\bin>javac My
JavaApplication.java
'C:\Program' is not recognized as an internal or external command,
operable program or batch file.

Any ideas?

Cheers

[KYA]

Did you change to that directory? Spaces in file/directory names dictate the use of quotes around the entire thing.

Are your environmental variables set?

[insanepenguin]

CLASSPATH is set to

Quote

.;C:\Program Files (x86)\Java\jre6\lib\ext\QTJava.zip

I have the 64bit JDK installed so I guess this an incorrect path?

[SingingBush]

If you have you JAVA_HOME set in you environment variables and %JAVA_HOME%\bin is in your PATH variable, then all you need is: javac filename.java

[insanepenguin]

path:

Quote

C:\Program Files\Java\jdk1.6.0_21\bin;

I set this to %JAVA_HOME%\bin ?

CLASSPATH:

Quote

.;C:\Program Files (x86)\Java\jre6\lib\ext\QTJava.zip

Do I need to change this?

I'm a bit confuddled! lol

[guido-granobles]

For call directly the java compiler you should write :

C:\"Program Files"\Java\jdk1.6.0_21\bin\javac.

For your JAVA_HOME it would be:

JAVA_HOME=C:\Program Files\Java\jdk1.6.0_21

[bcranger]

Whatever the problem is, it has nothing to do with Windows 7. I have a Windows 7 and a Windows XP and both compile fine.

[KYA]

guidojavier, on 17 August 2010 - 01:35 PM, said:

For call directly the java compiler you should write :

C:\"Program Files"\Java\jdk1.6.0_21\bin\javac.

I would argue that "C:\Program Files\Java\jdk1.6.0_21\bin\javac" is cleaner/better practice.

[pbl]

Your 1.6 is under /Program Files or /Program Files (x86)
your %PATH% should be updated accordingly

[SingingBush]

In your Control Panel go to System > Advanced system settings > Environment variables.

If you have not already got a JAVA_HOME variable you will need to add one. If you JDK is installed to "C:\Program Files\Java\jdk1.6.0_21" then that will be the value for JAVA_HOME. In your existing PATH variable you will need to make sure that the path to the JDK bin folder is there "C:\Program Files\Java\jdk1.6.0_21\bin". As the java home variable has been set you can use %JAVA_HOME%\bin, or "C:\Program Files\Java\jdk1.6.0_21\bin". It's up to you. (remember a semicolon is needed between entries to your PATH variable).

Once this is done test it on command line:
echo %JAVA_HOME% - should display path to your JDK
echo %PATH% - will show all you paths, so make sure path to JDK bin folder is there.

java -version - should now be able to be done from any directory and give correct version for your JDK.