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安装 JAVA 8：无法找到包

tag-icon • tag-icon apt java sudo repository add-apt-repository
安装 JAVA 8：无法找到包

我正在尝试安装 Java 8 但出现以下错误：

root@usr:~# sudo add-apt-repository ppa:webupd8team/java
sudo: add-apt-repository: command not found

经过一番研究后，我输入了以下解决方案：

root@usr:~# sudo apt-get install software-properties-common python-software-properties

但我收到此错误：

Reading package lists... Done
Building dependency tree
Reading state information... Done
Package python-software-properties is not available, but is referred to by another package.
This may mean that the package is missing, has been obsolete, or is only available from another source

E:Unable to locate package software-properties-common
E:Package 'python-software-properties' has no installation candidate

在此之后我尝试：

root@usr:~# sudo apt-get install software-properties-common

我收到以下错误信息：

E:Unable to locate package software-properties-common

我不知道还能做什么。你能帮忙吗？

答案1

如何安装最新的 Java JDK 和 JRE

下载 java jdk 和 jre

    http://www.oracle.com/technetwork/java/javase/downloads/index.html

扩展到主目录：

    ~/jdk*
    ~/jre*

一旦两个目录都暂时位于你的主目录中，只需将以下所有内容剪切并粘贴到终端中

# ............ TOP of cut N paste >>>>>>>>>>>>>>>>>>>>  #

sudo mkdir -p /usr/local/java

cd /usr/local/java

#   remove previous installs if any

sudo rm -rf /usr/local/java/jdk*
sudo rm -rf /usr/local/java/jre*

#   move downloaded into /usr/local/java

sudo mv ~/jdk* /usr/local/java/
sudo mv ~/jre* /usr/local/java/

cd /usr/local/java/

#   create symbolic links

sudo ln -s jdk*  jdk
sudo ln -s jre*  jre

#   ___ ONLY need to do below on fresh ubuntu install - not necessary if previously installed any java version as its already in place
# symlinks :

sudo update-alternatives --install "/usr/bin/java" "java" "/usr/local/java/jre/bin/java" 1

sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/local/java/jdk/bin/javac" 1

sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/local/java/jre/bin/javaws" 1

sudo update-alternatives --set java /usr/local/java/jre/bin/java

sudo update-alternatives --set javac /usr/local/java/jdk/bin/javac

sudo update-alternatives --set javaws /usr/local/java/jre/bin/javaws

java -version   #  run this to verify install worked

# ............ BOTTOM of cut N paste >>>>>>>>>>>>>>>>>>>>  #

完成...确认一切正常，请发出

java -version

这应该给你类似

java version "1.8.0_102"
Java(TM) SE Runtime Environment (build 1.8.0_102-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.102-b14, mixed mode)

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