What should I do if win7javac is not recognized as an internal or external command?

Many users find that javac cannot operate normally when using javac in win7 system. In fact, this problem should be because jdk is not installed, so it cannot operate normally. If both are installed and still cannot be used, you need to set the environment variables~

What should I do if win7javac is not an internal or external command:

1. First check whether jdk and jre have been installed successfully. If you still cannot configure it after the installation is complete, please perform the following operations.

2. Open the environment variable settings, then find and edit, and put the variable value into your installation location, for example:

3. Then find it. Enter

4, then open it again and enter. Then after confirming and saving, you can perform normal configuration and use.

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