CentOS环境JDK11安装 CentOS环境JDK安装1、下载JDK11下载地址：https://www.oracle.com/java/technologies/javase/jdk11-archive-downloads.html2、路径创建jdk安装文件夹mkdir /usr/local/java3、安装进入下载的jdk所在目录，执行安装命令。tar -zxvf jdk-11.0.10_linux-x64_bin.tar.gz -C /usr/local/java/4、环境配置修改系统环境文件/etc/profile，在最后加上java环境变量配置信息。export JAVA_HOME=/usr/local/java/jdk-11.0.10 export JRE_HOME=${JAVA_HOME}/jre export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib export PATH=${JAVA_HOME}/bin:$PATH5、连接创建软连接ln -s /usr/local/java/jdk-11.0.10/bin/java /usr/bin/java6、验证java -version输出结果：java version "11.0.10" 2021-01-19 LTS Java(TM) SE Runtime Environment 18.9 (build 11.0.10+8-LTS-162) Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.10+8-LTS-162, mixed mode)