Question

我将其发布为可能的错误报告，因为this page说，

问题排查

请在我们的StackOverflow页面上报告任何问题：https://stackoverflow.com/questions/tagged/corda

也许这些在Ubuntu上安装Java的指示是错误的（过时的）：

https://docs.corda.net/getting-set-up.html#id4

Java


打开一个新终端，然后通过键入sudo add-apt-repository ppa:webupd8team/java将Oracle PPA添加到您的存储库中。出现提示时按Enter。

使用命令sudo apt update
更新您的包裹清单
通过键入sudo apt install oracle-java8-installer安装Oracle JDK 8。

在出现提示时按Y，并同意许可条款。

因为这样做的结果如下：

cwellsx@cwellsx-VirtualBox:~$ sudo add-apt-repository ppa:webupd8team/java
[sudo] password for cwellsx: 
 The Oracle JDK License has changed for releases starting April 16, 2019.

The new Oracle Technology Network License Agreement for Oracle Java SE is substantially different from prior Oracle JDK licenses. The new license permits certain uses, such as personal use and development use, at no cost -- but other uses authorized under prior Oracle JDK licenses may no longer be available. Please review the terms carefully before downloading and using this product. An FAQ is available here: https://www.oracle.com/technetwork/java/javase/overview/oracle-jdk-faqs.html

Oracle Java downloads now require logging in to an Oracle account to download Java updates, like the latest Oracle Java 8u211 / Java SE 8u212. Because of this I cannot update the PPA with the latest Java (and the old links were broken by Oracle).

For this reason, THIS PPA IS DISCONTINUED (unless I find some way around this limitation).

Oracle Java (JDK) Installer (automatically downloads and installs Oracle JDK8). There are no actual Java files in this PPA.

Important -> Why Oracle Java 7 And 6 Installers No Longer Work: http://www.webupd8.org/2017/06/why-oracle-java-7-and-6-installers-no.html

Update: Oracle Java 9 has reached end of life: http://www.oracle.com/technetwork/java/javase/downloads/jdk9-downloads-3848520.html

The PPA supports Ubuntu 18.10, 18.04, 16.04, 14.04 and 12.04.

More info (and Ubuntu installation instructions):
- http://www.webupd8.org/2012/09/install-oracle-java-8-in-ubuntu-via-ppa.html

Debian installation instructions:
- Oracle Java 8: http://www.webupd8.org/2014/03/how-to-install-oracle-java-8-in-debian.html

For Oracle Java 11, see a different PPA -> https://www.linuxuprising.com/2019/06/new-oracle-java-11-installer-for-ubuntu.html
 More info: https://launchpad.net/~webupd8team/+archive/ubuntu/java
Press [ENTER] to continue or Ctrl-c to cancel adding it.

Hit:1 http://fr.archive.ubuntu.com/ubuntu bionic InRelease
Get:2 http://ppa.launchpad.net/webupd8team/java/ubuntu bionic InRelease [15,4 kB]
Get:3 http://fr.archive.ubuntu.com/ubuntu bionic-updates InRelease [88,7 kB]                         
Get:4 http://fr.archive.ubuntu.com/ubuntu bionic-backports InRelease [74,6 kB]                                    
Get:5 http://security.ubuntu.com/ubuntu bionic-security InRelease [88,7 kB]          
Get:6 http://fr.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages [713 kB]            
Get:7 http://security.ubuntu.com/ubuntu bionic-security/main amd64 DEP-11 Metadata [22,6 kB]
Get:8 http://security.ubuntu.com/ubuntu bionic-security/main DEP-11 48x48 Icons [10,4 kB]
Get:9 http://security.ubuntu.com/ubuntu bionic-security/main DEP-11 64x64 Icons [31,7 kB]
Get:10 http://fr.archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages [574 kB]
Get:11 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 DEP-11 Metadata [42,1 kB]
Get:12 http://fr.archive.ubuntu.com/ubuntu bionic-updates/main amd64 DEP-11 Metadata [285 kB]
Get:13 http://fr.archive.ubuntu.com/ubuntu bionic-updates/main DEP-11 48x48 Icons [70,9 kB]                
Get:14 http://fr.archive.ubuntu.com/ubuntu bionic-updates/main DEP-11 64x64 Icons [140 kB]                   
Get:15 http://fr.archive.ubuntu.com/ubuntu bionic-updates/universe i386 Packages [978 kB]                         
Get:16 http://security.ubuntu.com/ubuntu bionic-security/universe DEP-11 48x48 Icons [16,4 kB]                 
Get:17 http://security.ubuntu.com/ubuntu bionic-security/universe DEP-11 64x64 Icons [116 kB]
Get:18 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 DEP-11 Metadata [2 464 B]    
Get:19 http://fr.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages [1 000 kB]
Get:20 http://fr.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 DEP-11 Metadata [253 kB]
Get:21 http://fr.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 48x48 Icons [193 kB]
Get:22 http://fr.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 64x64 Icons [453 kB]
Get:23 http://fr.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 DEP-11 Metadata [2 468 B]
Get:24 http://fr.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 DEP-11 Metadata [7 920 B]
Fetched 5 179 kB in 6s (924 kB/s)                                     
Reading package lists... Done
cwellsx@cwellsx-VirtualBox:~$ sudo apt update
Hit:1 http://ppa.launchpad.net/webupd8team/java/ubuntu bionic InRelease
Hit:2 http://fr.archive.ubuntu.com/ubuntu bionic InRelease                                                    
Hit:3 http://security.ubuntu.com/ubuntu bionic-security InRelease                                             
Hit:4 http://fr.archive.ubuntu.com/ubuntu bionic-updates InRelease       
Hit:5 http://fr.archive.ubuntu.com/ubuntu bionic-backports InRelease
Reading package lists... Done                      
Building dependency tree       
Reading state information... Done
All packages are up to date.
cwellsx@cwellsx-VirtualBox:~$ sudo apt install oracle-java8-installer
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package oracle-java8-installer is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'oracle-java8-installer' has no installation candidate
cwellsx@cwellsx-VirtualBox:~$

也许（如果我错了，请纠正我）现在的方法是：

从https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html下载*.tar.gz

解压缩：

cwellsx@cwellsx-VirtualBox:~$ sudo mkdir /opt/java
cwellsx@cwellsx-VirtualBox:~$ sudo tar -zxf Downloads/jdk-8u221-linux-x64.tar.gz -C /opt/java

将以下内容添加到/etc/profile

# after `sudo tar -zxf Downloads/jdk-8u221-linux-x64.tar.gz -C /opt/java`
export JAVA_HOME=/opt/java/jdk1.8.0_221
export PATH=$PATH:$JAVA_HOME/bin

重新启动Ubuntu

验证

cwellsx@cwellsx-VirtualBox:~$ echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/opt/java/jdk1.8.0_221/bin
cwellsx@cwellsx-VirtualBox:~$ java -version
java version "1.8.0_221"
Java(TM) SE Runtime Environment (build 1.8.0_221-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode)

...类似于Windows的安装说明。

Answer 1

感谢您的笔记和贡献！

我将把注释传递给文档小组并进行相应的更改。

Corda文档安装JDK的指令有误

1 个答案: