How to configure java environment variables
How to configure java environment variables: 1. Right-click [Computer], select [Properties], click [Advanced System Settings] to open the environment variable settings; 2. Create a new [JAVA_HOME] variable and edit [Path] ] variable; 3. Create a new [Classpath] variable and edit it.
Specific method:
JAVA_HOME variable setting
First right-click [Computer] to enter [ Properties] and then select [Advanced system settings].
Click [Environment Variables] in [Advanced] to enter the environment variable editing interface.
In the [System Variables] below, the JAVA_HOME variable does not exist, then we need to click [New]
Variable name input: JAVA_HOME
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The variable value refers to the actual installation path (such as the editor’s path is: C:\Program Files\Java\jdk-9), and finally click OK.
Path variable setting
Also in [System Variables] we can see that the path variable already exists, then we only You need to click [Edit] to enter the editing of the path variable
The variable name remains unchanged and the variable value is changed to [%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin; ], and finally click OK.
Classpath variable setting
Similarly, there is no Classpath variable in the system variables. Click to enter [New]
Type the variable name [Classpath]
Type the variable value [.;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME %\lib\tools.jar; ]
Note: Do not miss the symbols in the variable value, and finally click OK.
Test whether the environment configuration is successful
After completing the above three variable configurations, don’t forget to click OK step by step.
Similarly, search [cmd] in [Start], then type [java] and [javac], and the message as shown in the figure will appear, indicating that the configuration is successful.
Recommended related articles and tutorials: java introductory tutorial
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