Javac is not recognize :

1. Open path of java jdk file and copy.

2.open computer properties and click on advanced system settings.

3.click on environment variable key.

4.select path and click on edit key.

5. past your path here may already some path exist here so you just have to use semicolon(;) between  two path  and then past your jdk path here.

now enjoy.



note:
if it's still not working send me your comment i will send you video tutorial. or any other method
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thank you