解压JDK到目标目录

tar -xzf jdk-11.0.1_linux_x64_bin.tar.gz -C /usr/local/java

配置环境变量

echo 'export JAVA_HOME=/usr/local/java/jdk-11.0.1' >> ~/.bashrc
echo 'export PATH=$PATH:$JAVA_HOME/bin' >> ~/.bashrc
echo 'export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar' >> ~/.bashrc

应用环境变量更改

source ~/.bashrc

验证安装

java -version