After downloading JDK installation is complete, why should configure the environment variables

Because the JDK Microsoft is not a company and although I did not need a very powerful JAVA JAVA open operating environment and general users who use less than JAVA there is a demand in the configuration click on it this is the idea of ​​every business I realized it can be installed JAVA environment but I want more public good user experience

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Origin www.cnblogs.com/chenlong321/p/11814271.html