Ubuntu 16.04的Java 11安装问题

如何解决Ubuntu 16.04的Java 11安装问题

我已经尝试了所有方法，但是以某种方式无法安装Java 11。 显示我以前的Java版本

我做了以下步骤：

步骤1：我从Oracle网站安装了jdk-11.0.8_linux-x64_bin.deb个文件。

步骤2：运行此命令：sudo dpkg -i jdk-11.0.8_linux-x64_bin.deb

步骤3： sudo get update

步骤4：运行此命令sudo vim /etc/profile.d/jdk.sh

步骤5：在空文件夹中添加以下行：

export JAVA_HOME=/usr/lib/jvm/jdk-11.0.8/
export PATH=$PATH:$JAVA_HOME/bin

并保存该文件。比起我用usr/lib/jvm签入ls路径 我得到：

default-java@  java-1.8.0-openjdk-amd64@  java-8-openjdk-amd64/  jdk-11.0.8/

输入以下命令：

source /etc/profile.d/jdk.sh

我得到这些输出：

    set: Warning: path component /usr/lib/jvm/jdk-11.0.8/bin:/home/duygu/bin may not be valid in PATH.
set: No such file or directory
set: Did you mean 'set PATH $PATH /home/duygu/bin'?
set: Warning: path component /usr/lib/jvm/jdk-11.0.8/bin:/home/duygu/.local/bin may not be valid in PATH.
set: No such file or directory
set: Did you mean 'set PATH $PATH /home/duygu/.local/bin'?
set: Warning: path component /usr/lib/jvm/jdk-11.0.8/bin:/usr/local/sbin may not be valid in PATH.
set: No such file or directory
set: Did you mean 'set PATH $PATH /usr/local/sbin'?
set: Warning: path component /usr/lib/jvm/jdk-11.0.8/bin:/usr/local/bin may not be valid in PATH.
set: No such file or directory
set: Did you mean 'set PATH $PATH /usr/local/bin'?
set: Warning: path component /usr/lib/jvm/jdk-11.0.8/bin:/usr/sbin may not be valid in PATH.
set: No such file or directory
set: Did you mean 'set PATH $PATH /usr/sbin'?
set: Warning: path component /usr/lib/jvm/jdk-11.0.8/bin:/usr/bin may not be valid in PATH.
set: No such file or directory
set: Did you mean 'set PATH $PATH /usr/bin'?
set: Warning: path component /usr/lib/jvm/jdk-11.0.8/bin:/sbin may not be valid in PATH.
set: No such file or directory
set: Did you mean 'set PATH $PATH /sbin'?
set: Warning: path component /usr/lib/jvm/jdk-11.0.8/bin:/bin may not be valid in PATH.
set: No such file or directory
set: Did you mean 'set PATH $PATH /bin'?
set: Warning: path component /usr/lib/jvm/jdk-11.0.8/bin:/usr/games may not be valid in PATH.
set: No such file or directory
set: Did you mean 'set PATH $PATH /usr/games'?
set: Warning: path component /usr/lib/jvm/jdk-11.0.8/bin:/usr/local/games may not be valid in PATH.
set: No such file or directory
set: Did you mean 'set PATH $PATH /usr/local/games'?
set: Warning: path component /usr/lib/jvm/jdk-11.0.8/bin:/snap/bin may not be valid in PATH.
set: No such file or directory
set: Did you mean 'set PATH $PATH /snap/bin'?
set: Warning: path component /usr/lib/jvm/jdk-11.0.8/bin:/usr/local/jdk-11.0.2/bin may not be valid in PATH.
set: No such file or directory
set: Did you mean 'set PATH $PATH /usr/local/jdk-11.0.2/bin'?

当我检查java -version时，我得到：openjdk version "1.8.0_265"

然后输入以下命令：update-java-alternatives --list我得到：

java-1.8.0-openjdk-amd64       1081       /usr/lib/jvm/java-1.8.0-openjdk-amd64

我尝试了sudo reboot并再次尝试，但是我没有安装Java 11。如何安装？我的错在哪里？

已编辑：

我已经尝试过以下代码：

sudo add-apt-repository ppa:linuxuprising/java

sudo apt-get update

sudo apt-get install openjdk-11-jdk

我收到这样的错误：

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package openjdk-11-jdk is a virtual package provided by:
  oracle-java15-installer 15-1~linuxuprising3
  oracle-java14-installer 14.0.2-1~linuxuprising1
  oracle-java11-installer-local 11.0.8-1~linuxuprising0
You should explicitly select one to install.

E: Package 'openjdk-11-jdk' has no installation candidate

解决方法

您可能可以通过以下命令安装Java 11

sudo add-apt-repository ppa:linuxuprising/java

sudo apt-get update

sudo apt-get install openjdk-11-jdk

您可以参考此link来了解如何在ubuntu上安装openjdk 11。

然后您可以运行

update-alternatives --config java

以更新Java版本。您可以参考此link来了解如何更新Java替代项。

,

只需在安装后执行此操作

sudo nano /etc/environment
JAVA_HOME="/usr/lib/jvm/jdk-11.0.8"

请注意，/bin不包括在内。保存并退出。然后，

source /etc/environment

顺便说一句，为什么要使普通安装复杂化？