I cant run java files in my windows7 even after changing class path....Please help

I cant run java in my laptop..when i type "javac" command in cmd...its popping like "javac is not recognized as an internal or external command"....I ve already changed my path to CLASSPATH "C:\Program Files\Java\jdk1.7.0_09"....please help

you need to change your system's path, not its classpath.

I have added a variable "path" in user variables and given its value as C:\Program Files\Java\jdk1.7.0_09 and in system variables i added a variable CLASSPATH and given its value as C:\Program Files\Java\jdk1.7.0_09\lib......but still its not workin....please help

Have you checked to see where does the javac file resides? I believe its in the bin path of your jdk, and your path statement doesn't appear to include the bin subdirectory. Don't set your system's classpath, as you shouldn't be doing this with Java. Instead use the Javac and Java -cp switch when calling these programs.