问题

How do I install Java Development Kit (JDK) 10 on Ubuntu?

The installation instructions on Oracle's help center only explain how to download and extract the archive on Linux platform, without any system setup.

回答1:

Update: JDK 11 Now Available

sudo apt-get install openjdk-11-jdk

For JDK 10

Option 1: Easy Installation (PPA)

sudo add-apt-repository ppa:linuxuprising/java
sudo apt-get update
sudo apt-get install oracle-java10-installer

Then set as default with:

sudo apt-get install oracle-java10-set-default

And finally verify Installation with:

$ java -version
java version "10.0.1" 2018-04-17
Java(TM) SE Runtime Environment 18.3 (build 10.0.1+10)
Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.1+10, mixed mode)

Source: Linux Uprising

Option 2: Manual Installation

Download OpenJDK 10 binaries for Linux.

Untar the downloaded archive:

tar xzvf openjdk-10_linux-x64_bin.tar.gz

Move the extracted archive to where your system keeps your installed JDKs:
```
sudo mv jdk-10 /usr/lib/jvm/java-10-openjdk-amd64/
```

Add the new Java alternative:

sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/java-10-openjdk-amd64/bin/java 1
sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/java-10-openjdk-amd64/bin/javac 1

Update your system's java alternatives and choose JDK 10:

$ sudo update-alternatives --config java
here are 3 choices for the alternative java (providing /usr/bin/java).

  Selection    Path                                            Priority   Status
------------------------------------------------------------
  0            /usr/lib/jvm/java-9-openjdk-amd64/bin/java       1091      auto mode
* 1            /usr/lib/jvm/java-10-openjdk-amd64/bin/java      1         manual mode
  2            /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java   1081      manual mode
  3            /usr/lib/jvm/java-9-openjdk-amd64/bin/java       1091      manual mode

Press <enter> to keep the current choice[*], or type selection number:

and

$ sudo update-alternatives --config javac
There are 3 choices for the alternative javac (providing /usr/bin/javac).

  Selection    Path                                          Priority   Status
------------------------------------------------------------
* 0            /usr/lib/jvm/java-9-openjdk-amd64/bin/javac    1091      auto mode
  1            /usr/lib/jvm/java-10-openjdk-amd64/bin/javac   1         manual mode
  2            /usr/lib/jvm/java-8-openjdk-amd64/bin/javac    1081      manual mode
  3            /usr/lib/jvm/java-9-openjdk-amd64/bin/javac    1091      manual mode

Press <enter> to keep the current choice[*], or type selection number: 1
update-alternatives: using /usr/lib/jvm/java-10-openjdk-amd64/bin/javac to provide /usr/bin/javac (javac) in manual mode

Verify your installation with:

$ java --version
openjdk 10 2018-03-20
OpenJDK Runtime Environment 18.3 (build 10+46)
OpenJDK 64-Bit Server VM 18.3 (build 10+46, mixed mode)

and

$ javac --version
javac 10

Done

If you prefer Oracle's JDK, download it and follow the installation steps as shown above.

回答2:

There is a ppa on java 10 that installs oracle's java: https://launchpad.net/~linuxuprising/+archive/ubuntu/java

I am not sure if this will be maintained though. It seems to be a copy of the webupd8 way on how to handle oracle java installation (ref: documentation).

How to use this ppa:

sudo add-apt-repository ppa:linuxuprising/java
sudo apt-get update
sudo apt-get install oracle-java10-installer

Verify installation:

$ /usr/lib/jvm/java-10-oracle/bin/java -version
java version "10.0.1" 2018-04-17
Java(TM) SE Runtime Environment 18.3 (build 10.0.1+10)
Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.1+10, mixed mode)

Setting up environment variables (make java10 default)

sudo apt-get install oracle-java10-set-default

回答3:

I found sdkman a very useful tool because it provides a convenient way of installing (managing!) what JDK install/use in a given time from the shell.

For example, once it is installed, you can:

List available JDK (list candidates): sdk list java

This will show something like:

==============================================================================
Available Java Versions
==============================================================================                                                        
     9.0.4-open                                                                    
   + 8u161-oracle                                                                  
     8.0.191-oracle                                                               
 > + 8.0.171-oracle                                                                
     7.0.191-zulu                                                                 
     12.ea.15-open                                                                 
     11.0.1-open                                                                  
     10.0.2-open                                                                   
     1.0.0-rc8-graal                                                              

==============================================================================
+ - local version
* - installed
> - currently in use
==============================================================================

Install a specific version: sdk install java 10.0.2-open

It will show something like:

Downloading: java 10.0.2-open

In progress...

#################                             12,3%

Use a specific version: sdk use java 10.0.2-open

It will show something like:

Using java version 10.0.2-open in this shell.

Usage

For more info see https://sdkman.io/usage

回答4:

Note: You need update-alternatives only if you have multiple java versions.

Note: You can purge everything about Java before fresh installing new Java.

 sudo apt purge java*

For Java 10 fresh installation

Download JDK 10 from here (you can download JRE and server JRE): http://www.oracle.com/technetwork/java/javase/downloads/index.html
Extract and put somewhere in /opt/java directory. You putting JDK in /opt/java directory makes it will be usable for all users as it is being in the public /opt directory.

(Note: I downloaded JDK, JRE, and server JRE, and extracted JDK and renamed extracted the folder to jdk10, extracted JRE and renamed extracted the folder to jre10, and extracted server JRE and renamed extracted the folder to jre10server as shown in below snapshot).
Update your /etc/environment file as below

Now, you need to reload the /etc/environment script file into the system using source command as below.

source /etc/environment

If you want to know more about update-alternatives then here is the link: https://askubuntu.com/questions/159575/how-do-i-make-java-default-to-a-manually-installed-jre-jdk

回答5:

There are different ways of doing this , but the most convenient and easy way of doing this is i found in a video link .

This guy shows how can you install it manually .

The advantage is you dnt give control to os to install stuff and if you want to switch between JDK versions , you can do that very easily . Steps :-

Step 1- Download JDK and Extract it

Step 2- Move your extracted folder in a proper directory of your choice.

Step 3- Set environment variable as we do in Windows System Update your .bashrc file and add the following line

export JAVA_HOME=/usr/lib/java/jdk1.8.0_77
export PATH="$PATH:$JAVA_HOME/bin"

回答6:

You need to do update-alternatives --install before the final step.

sudo update-alternatives --install "/usr/bin/java" java "/usr/lib/jvm/java-10-openjdk-amd64/bin/java" 1
sudo update-alternatives --install "/usr/bin/javac" javac "/usr/lib/jvm/java-10-openjdk-amd64/bin/javac" 1

回答7:

I've found a repo

sudo add-apt-repository ppa:openjdk-r/ppa
sudo apt update
sudo apt install openjdk-10-jdk

Repo home page

来源：https://stackoverflow.com/questions/49507160/how-to-install-jdk-10-under-ubuntu

标签

java

Ubuntu

java-10

How to install JDK 10 under Ubuntu?

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