Ubuntu下通過ppa安裝jdk

1、首先安裝工具包和依賴

    sudo apt-get install python-software-properties
    sudo apt-get software-properties-common

2、執行其餘命令

    sudo add-apt-repository ppa:webupd8team/java
    sudo apt-get update
    sudo apt-get install oracle-java8-installer/sudo apt-get install oracle-java7-installer       ##jdk7或者jdk8

之後你可以通過 java -version 查看是否安裝成功

    syx@iZ25cdyqk2uZ:~$ java -version
    java version "1.8.0_91"
    Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
    Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)