How to configure environment variables in java

#Download JDK

Download address: https://www.oracle.com/technetwork/java/javase/downloads/index-jsp-138363.html

Click the download button:

Start installing JDK:

can be set to the path you want to install.

Environment variable configuration

1. Open the environment variables window

right-click This PC(this Computer) -> Properties -> Advanced system settings -> Environment Variables...

2. Create a new JAVA_HOME variable

Click the New... button

Input:

Variable name: JAVA_HOME

Variable value: The absolute path of the JDK installation on the computer

After inputting, click OK.

#The following files must be visible in the JDK path.

3. Create/modify CLASSPATH variable

If the CLASSPATH variable exists, select it and click Edit.

If not, click New... to create a new one.

Enter/add after the existing variable value:

Variable name: CLASSPATH

Variable value: .;%JAVA_HOME%\lib\dt.jar ;%JAVA_HOME%\lib\tools.jar;

Click OK to save.

#4. Modify the Path variable

Due to the difference in win10, when the Path variable is selected, the system will easily All different paths are separated and will not be connected together like win7 or win8.

Create two new paths:

%JAVA_HOME%\bin
%JAVA_HOME%\jre\bin

##5. Check to open cmd, enter java, and a series of The command prompt indicates that the configuration is successful:

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