linux安装jdk
http://www.linuxidc.com/Linux/2016-07/133482.htm 安装jdk和eclipse
准备jdk
https://www.oracle.com/java/technologies/javase-jdk8-downloads.html oracle的jdk 8的下载页
访问oracle的jdk 8的下载页, 登录java帐号, 下载jdk-8u121-linux-x64.tar.gz
安装jdk
jdk放置/opt/jvm, 并解压
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| dassein@pad:~$ su root
Password:
root@pad:/home/dassein# mv /home/dassein/Downloads/jdk-8u121-linux-x64.tar.gz /opt/jvm/
root@pad:/home/dassein# sudo tar zxvf /opt/jvm/jdk-8u121-linux-x64.tar.gz -C /opt/jvm
jdk1.8.0_121/
jdk1.8.0_121/THIRDPARTYLICENSEREADME-JAVAFX.txt
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配置jdk的环境变量
打开 /etc/profile 即(sudo vim /etc/profile), 在文件末尾添加语句
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| export JAVA_HOME=/opt/jvm/jdk1.8.0_121
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
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保存后退出
使其立即生效：sudo source /etc/profile
查看是否安装成功：java -version 出现 java version "1.8.0_121"
说明jdk安装成功
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| root@pad:/home/dassein# sudo vim /etc/profile
root@pad:/home/dassein# source /etc/profile
dassein@pad:~$ java -version
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)
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