Ubuntu下安裝JDK

安裝JDK：   1.下載 http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html   2.創建目錄 sudo mkdir /usr/lib/jvm   3.解壓 sudo tar- zxvf jdk-8u5-linux-x64.gz  -C /usr/lib/jvm/ cd /usr/

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