JDK(JAVA)版本管理工具 jenv

源码：https://github.com/jenv/jenv

# 编译

mkdir /opt/jenv && cd /opt/jenv
tar -zxvf jenv-0.5.6.tar.gz
cd /opt/jenv/jenv-0.5.6

# 环境变量

echo '### JENV ###' >> ~/.bashrc
echo 'export JENV_ROOT="/opt/jenv/jenv-0.5.6"' >> ~/.bashrc
echo 'export PATH="$JENV_ROOT/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(jenv init -)"' >> ~/.bashrc

source ~/.bashrc

# 验证 jenv 安装

jenv doctor

# JDK 版本下载

mkdir /opt/java && cd /opt/java

# JDK8
wget https://repo.huaweicloud.com/java/jdk/8u202-b08/jdk-8u202-linux-x64.tar.gz
tar -zxvf jdk-8u202-linux-x64.tar.gz
jenv add /opt/java/jdk1.8.0_202

# JDK17
wget https://repo.huaweicloud.com/openjdk/17.0.2/openjdk-17.0.2_linux-x64_bin.tar.gz
tar -zxvf openjdk-17.0.2_linux-x64_bin.tar.gz
jenv add /opt/java/jdk-17.0.2

# 设置 JDK 版本

# 获取版本信息
jenv versions

# 设置全局版本
jenv global 17

# jenv shell  ： select just for current shell session.
# jenv local  ： current directory (or its subdirectories).
# jenv global ： select globally for your user account.

# 测试

echo ${JAVA_HOME}
java -version
javac -version

### 更多命令使用请参考帮助文档：jenv -h