在Ubuntu 16.04中安裝Java 8過程筆記。
1 Java 8 下載地址
http://www.Oracle.com/technetwork/cn/java/javase/downloads/jdk8-downloads-2133151-zhs.html
2 以root用戶登錄將下載的jdk-8u92-linux-x64.tar.gz文件放到/temp目錄下，使用如下命令解壓
tar zxvf jdk-8u92-linux-x64.tar.gz
3 將解壓後的jdk1.8.0_92復制到/opt下，命令如下：
root@linuxidc:~# mkdir /temp
root@linuxidc:~# cd /temp
root@linuxidc:/temp# tar zxvf jdk-8u92-linux-x64.tar.gz
root@linuxidc:/temp# cd /opt
root@linuxidc:/opt# mv /temp/jdk1.8.0_92/ .
root@linuxidc:/opt# ls -l
總用量 4
drwxr-xr-x 8 uucp 143 4096 4月 1 12:20 jdk1.8.0_92
4 在/bin目錄下創建java軟鏈接
root@linuxidc:/opt# cd /bin
root@linuxidc:/bin# ln -s /opt/jdk1.8.0_92/bin/java java
驗證軟件接的正確性
root@linuxidc:/bin# java -version
java version "1.8.0_92"
Java(TM) SE Runtime Environment (build 1.8.0_92-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.92-b14, mixed mode)
5 設置Java環境
root@linuxidc:/bin# gedit /etc/profile
export JAVA_HOME=/opt/jdk1.8.0_92
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH={JAVA_HOME}/bin:$PATH
root@linuxidc:/bin# source /etc/profile
root@linuxidc:/bin# echo $JAVA_HOME
/opt/java1.8.0_92
6 切換到其它用戶驗證
linuxidc@linuxidc:~$ echo $JAVA_HOME
/opt/jdk1.8.0_92
linuxidc@linuxidc:~$ java -version
java version "1.8.0_92"
Java(TM) SE Runtime Environment (build 1.8.0_92-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.92-b14, mixed mode)
CentOS7.2安裝JDK1.7 http://www.linuxidc.com/Linux/2016-11/137398.htm
CentOS 搭建JDK環境 http://www.linuxidc.com/Linux/2015-06/118879.htm
Ubuntu 14.04安裝JDK1.8.0_25與配置環境變量 http://www.linuxidc.com/Linux/2015-01/112030.htm
Ubuntu 14.04 LTS安裝Oracle JDK 1.8 http://www.linuxidc.com/Linux/2014-11/109216.htm
CentOS6.3安裝JDK和環境配置 http://www.linuxidc.com/Linux/2012-09/70780.htm
在Linux虛擬機下配置JDK的環境變量 http://www.linuxidc.com/Linux/2017-01/139212.htm
