问题: 我该如何在 Elemetary OS Luna 上安装Oracle Java 7？

回答: 在 Elementary OS Luna 安装 Java 7 的步骤如下: 由于Elementary OS是基于Ubuntu，所以我们允许使用具有多种Java包的WEPUD8 PPA。

1. 打开终端。

2. 运行以下指令添加Java的PPA到你的软件仓:

   $ sudo add-apt-repository ppa:webupd8team/javaYou are about to add the following PPA to your system:Oracle Java (JDK) Installer (automatically downloads and installs Oracle JDK6 / JDK7 / JDK8). There are no actual Java files in this PPA. More info: http://www.webupd8.org/2012/01/install-oracle-java-jdk-7-in-ubuntu-via.htmlDebian installation instructions: http://www.webupd8.org/2012/06/how-to-install-oracle-java-7-in-debian.htmlMore info: https://launchpad.net/~webupd8team/+archive/javaPress [ENTER] to continue or ctrl-c to cancel adding it

3. 按回车继续

   gpg: keyring `/tmp/tmpB5WwDG/secring.gpg' createdgpg: keyring `/tmp/tmpB5WwDG/pubring.gpg' createdgpg: requesting key EEA14886 from hkp server keyserver.ubuntu.comgpg: /tmp/tmpB5WwDG/trustdb.gpg: trustdb createdgpg: key EEA14886: public key "Launchpad VLC" importedgpg: Total number processed: 1gpg: imported: 1 (RSA: 1)OK

4. 现在更新你的系统

   $ sudo apt-get update

5. 运行以下命令安装Java 7:

   $ sudo apt-get install oracle-java7-installer[sudo] password for enock:Reading package lists... DoneBuilding dependency treeReading state information... DoneThe following packages were automatically installed and are no longer required:gir1.2-gstreamer-0.10 libilmbase6 libmagickcore4 libmagickwand4 libcdt4libmagickcore4-extra liblqr-1-0 imagemagick-common libpathplan4 libopenexr6rsync netpbm libgvc5 libnetpbm10 libgraph4Use 'apt-get autoremove' to remove them.The following extra packages will be installed:gsfonts-x11 java-commonSuggested packages:default-jre equivs binfmt-support visualvm ttf-baekmuk ttf-unfontsttf-unfonts-core ttf-kochi-gothic ttf-sazanami-gothic ttf-kochi-minchottf-sazanami-mincho ttf-arphic-umingThe following NEW packages will be installed:gsfonts-x11 java-common oracle-java7-installer0 upgraded, 3 newly installed, 0 to remove and 196 not upgraded.Need to get 88.5 kB of archives.After this operation, 473 kB of additional disk space will be used.Do you want to continue [Y/n]?

6. 输入代表Yes的Y以及回车键继续安装。

7. 在安装过程中，你需要同意条款才能继续。选择OK。

   

8. 然后选择Yes继续。

   

9. 现在请等待安装包的下载与自动安装:

   

10. 安装完成。你可以在终端上查看Java版本:

    $ java -versionjava version "1.7.0_45"Java(TM) SE Runtime Environment (build 1.7.0_45-b18)Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)

原文发布时间为：2013-12-15

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