'javac' is not recognized

Question

I have added Path variable 'C:\\Program Files\\Java\\jdk1.6.0_21\\bin' in Environment Variables, but it still gives me this error: 'javac' is not recognized as an internal or external command, operable program or batch file when I try to run javac mycode.java . I am going insane, please help. Thanks.

Answer 1

关闭命令提示符窗口并再次打开它以使新环境变量生效。