# JDK环境变量

# Windows

JAVA_HOME
```
C:\dev\Java\jdk1.8.0_121
```
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CLASSPATH

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

path
```
%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;
```
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# Linux

安装目录
```
/usr/local/soft/jdk1.8.0_231/bin/java
```
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配置

vim /etc/profile

# JAVA 环境变量配置
export JAVA_HOME=/usr/local/soft/jdk1.8.0_231
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

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生效：
```
source /etc/profile
```
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maven →