Configure JDK1.8 environment variables

1. Create a new environment variable JAVA_HOME

Variable name: JAVA_HOME

Variable value: C:\Program Files\Java\jdk1.8.0_152 

The variable value is your own jdk installation directory

2. CLASSPATH

1. Create a new environment variable CLASSPATH

   Variable name: CLASSPATH

   variable:

2. .;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar

3. Configure environment variable Path

Double-click Path, click New, and add "%JAVA_HOME%\bin";

Click New again and add "%JAVA_HOME%\jre\bin".

Pay special attention here. The win10 environment variable values ​​are line by line. Do not click New directly and add "%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;", otherwise the error "javac is not an internal or external command" will appear. .

Verification: java -version