Role 1. path environment variable
Ensure javac command can be run in any directory.
2. path configuration of two options:
A method as follows:
① Click Computer -> right click -> Properties
② Advanced System Settings
③ Advanced -> Environment Variables
④ system variable àPath-> Edit à cursor to the front / rear à English under the state with a semicolon ";"
⑤ into the bin under the jdk installation directory, and then click the address bar, copy this path to the top of the variable value.
⑥ OK and exit all the way
Method II as follows (recommended):
Find the environment variable position, in which the system variable
New:
Variable name: JAVA_HOME
Variable value: C: \ Program Files \ Java \ jdk1.7.0_71
modify:
Variable name: Path
Variable value:% JAVA_HOME% \ bin; previous contents
Jdk is installed properly and test environment variable is configured correctly
Start - Run -cmd- javac -version Enter
Note : After configuring the environment variables, remember to re-open a DOS window, otherwise the configuration does not take effect.
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Reproduced in: https: //juejin.im/post/5d08efa2e51d455d850d3af0