一.环境
OS:Ubuntu 16.04.1(x86_64)
jdk:jdk-11.0.7_linux-x64
二.安装
1.去甲骨文官网下载(https://www.oracle.com/java/technologies/javase-jdk11-downloads.html);
2.压缩包复制到 /usr/local/src 备用,解压到 /usr/local/ 目录下;
3.配置环境变量(编辑 /etc/profile );
#jdk11 environment export JAVA_HOME=/usr/local/jdk-11.0.7 export CLASSPATH=.:${JAVA_HOME}/lib export PATH=${JAVA_HOME}/bin:$PATH
注:jdk11压缩包没有自带jre后面还需自己安装,但是jdk8解压目录有jre,因此需要添加,配置如下:
#java environment export JAVA_HOME=/usr/java/解压目录 export CLASSPATH=.:${JAVA_HOME}/jre/lib/rt.jar:${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar export PATH=$PATH:${JAVA_HOME}/bin
4.使配置文件生效;
source /etc/profile
5.验证是否安装成功;
java
javac
java --version