Installing Oracle JDK on Windows subsystem for Linux

Question

When trying to use the Linux version of Oracle's JDK on the latest Windows 10 build having support for bash, I am running into a problem with the prompt hanging whenever attempting to invoke the java binary.

Typing even something as simple as java -version hangs and I have to terminate the process to resume control.

Anyone got this working yet?

Answer 1

#!/bin/bash

set -ex

# UPDATE THESE URL
export JDK_URL=https://download.oracle.com/java/21/latest/jdk-21_linux-x64_bin.tar.gz

# Download Oracle Java 21 accepting the license
wget --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" \
${JDK_URL}
# Extract the archive
tar -xzvf jdk-*.tar.gz
# Clean up the tar
rm -fr jdk-*.tar.gz
# Make the jvm dir if it doesn't exist
sudo mkdir -p /usr/lib/jvm
# Move the JDK to the jvm directory
sudo mv jdk-21 /usr/lib/jvm/oracle_jdk21

# Set up alternatives for java and javac
sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/oracle_jdk21/bin/java 2000
sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/oracle_jdk21/bin/javac 2000

# Set environment variables
sudo echo "export J2SDKDIR=/usr/lib/jvm/oracle_jdk21
export J2REDIR=/usr/lib/jvm/oracle_jdk21/jre
export PATH=\$PATH:/usr/lib/jvm/oracle_jdk21/bin:/usr/lib/jvm/oracle_jdk21/db/bin:/usr/lib/jvm/oracle_jdk21/jre/bin
export JAVA_HOME=/usr/lib/jvm/oracle_jdk21
export DERBY_HOME=/usr/lib/jvm/oracle_jdk21/db" | sudo tee -a /etc/profile.d/oraclejdk.sh

# Reload profile to apply the changes
source /etc/profile.d/oraclejdk.sh

And now I can do the following

h___g@mars:~/Documents$ java --version
java 21.0.4 2024-07-16 LTS
Java(TM) SE Runtime Environment (build 21.0.4+8-LTS-274)
Java HotSpot(TM) 64-Bit Server VM (build 21.0.4+8-LTS-274, mixed mode, sharing)

Updated version from Mr. fieldju. Credit goes to him

Answer 2

The steps I did for a fresh install of Oracle JDK 8 on my Bash (Windows 10):

1. sudo apt-get install python-software-properties

2. sudo add-apt-repository ppa:webupd8team/java

3. sudo apt-get update

4. sudo apt-get install oracle-java8-installer

5. Accept licenses

   

You're done! Check your java version using java -version and expected output should be something like this:

java version "1.8.0_151"
Java(TM) SE Runtime Environment (build 1.8.0_151-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode)

P.S. At the time of writing this, stable version Oracle 9 JDK has been released, you could probably tweak step 4 above.

Answer 3

This has referred to all above answers and comments and tries to put it together as a complete guidance.

It is straight forward to have jdk installed directly in WSL2 Linux therefore we skip this option here.

It is perfectly okay to use/share the Windows JDK with WSL2 Linux, you just need to setup two things, JAVA_HOME and PATH in your Linux shell profile, in my case, ~/.bashrc.

STEP 1: check your Windows Java location

By default it is installed in here (version can be different) C:\Program Files\Java\jdk1.8.0_321

WSL2 will be able to access to this Windows file location in such format /mnt/c/Program Files/Java/jdk1.8.0_321

Therefore,

STEP 2: load this with your shell profile,

Edit this file,

$ sudo nano ~/.bashrc

by adding following to its bottom

export JAVA_HOME="/mnt/c/Program Files/Java/jdk1.8.0_321"
export PATH=$JAVA_HOME/bin:$PATH
export alias java='java.exe'
export alias javac='javac.exe'

save it by Ctrl/CMD + O then Enter

Exit nano editor by Ctrl/CMD + X

Refresh the profile to load added variables by

$ source ~/.bashrc

There you go. You can now verify it is working by

$ java -version

It will give you something similar to following,

java version "1.8.0_321"
Java(TM) SE Runtime Environment (build 1.8.0_321-b07)
Java HotSpot(TM) 64-Bit Server VM (build 25.321-b07, mixed mode)

Summary

You have done three things in total here,

1. Defined your $JAVA_HOME as using the Windows installation of jdk

to verify this:

$ echo $JAVA_HOME
/mnt/c/Program Files/Java/jdk1.8.0_321

2. Defined a user scope $PATH variable to let apps know where to find java compiler

to verify this:

$ echo $PATH
/mnt/c/Program Files/Java/jdk1.8.0_321/bin:...

3. Set up alias to call java like you having it directly on Linux by call java instead of java.exe

to verify this:

$ java -version
java version "1.8.0_321"
Java(TM) SE Runtime Environment (build 1.8.0_321-b07)
Java HotSpot(TM) 64-Bit Server VM (build 25.321-b07, mixed mode)

Unfortunately this will make you do something like which java. In order to do this as for native Linux software, you might want to follow further steps like in here (not verified): https://stackoverflow.com/a/64489793/3107052 You however really don't need this as this won't do anything more than telling you where is your java that was borrowed from Windows.

Answer 4

I had the same problem but I solve it with one command:

sudo apt upgrade

then run these 3 commands:

sudo apt install default-jre
sudo apt install openjdk-11-jre-headless
sudo apt install openjdk-8-jre-headless

Answer 5

A lot of answers are recommending installing the Linux JDK even though they have a perfectly good Windows JDK. The beauty of WSL is preventing you from having to do things like this, as the file systems are interoperable. As long as you take the file extensions into account (outlined below), you would only have to install both for niche situations.

Straightforward Method

You can do this very simply by adding the following line of code to your .bashrc file, assuming that your Windows Environment variables are set correctly and WSL is installed:

# Shared environment variables
export JAVA_HOME=/mnt/d/Java/jdk11.0.4_10

Just ensure that you change the directory to point to your JDK folder. In my case, it's in D:\Java\jdk11.0.4_10 which in WSL is /mnt/d/Java/jdk11.0.4_10

Also, since you're using Windows binaries, you must specify the file type when running from a WSL bash shell:

Example

Calling Windows JDK from:

CMD:

javac MyClass.java
java MyClass

WSL:

javac.exe MyClass.java
java.exe MyClass

Note WSL requires .exe since it is a Windows binary. When using the Linux distro of the OpenJDK, no extension is required..

Answer 6

This worked for me. Though, I don't like adding these weird repositories. Linuxuprising? Would be great if Microsoft would fix that.

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

Answer 7

It seems in 2017 august the solution is simpler as suggested by @noah-david.

I was able to install Oracle JDK 8 from the “WebUpd8” team repository.

Instructions. To add the repository:

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update

To install:

sudo apt-get install oracle-java8-installer 
sudo apt install oracle-java8-set-default

After install

costin@amanta-win:/mnt/c/work$ java -version
java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)

costin@amanta-win:/mnt/c/work$ which java
/usr/bin/java

costin@amanta-win:/mnt/c/work$ uname -a
Linux amanta-win 4.4.0-43-Microsoft #1-Microsoft Wed Dec 31 14:42:53 PST 2014 
  x86_64 x86_64 x86_64 GNU/Linux

Answer 8

I must be missing something... all I did was:

sudo apt-get update
sudo apt-get install default-jdk

java -version

output:

java version "1.7.0_131"
OpenJDK Runtime Environment (IcedTea 2.6.9) (7u131-2.6.9-0ubuntu0.14.04.2)
OpenJDK 64-Bit Server VM (build 24.131-b00, mixed mode)

Answer 9

I wanted to clarify that as of 9 December 2016, you most certainly can install Java 8 on Ubuntu Bash for Windows 10 and that @Karl Horton is correct.

You will need to install unzip sudo apt-get install unzip

Copy this script somewhere in your bash for windows session and make it executable (chmod +x filename). If you do not use a command line based editor such as vim then you will have windows line endings to deal with. you can use dos2unix or your preferred way of dealing with that. I just paste it into a file using vim.

 #!/bin/bash

set -ex

# UPDATE THESE URLs
export JDK_URL=http://download.oracle.com/otn-pub/java/jdk/8u131-b11/d54c1d3a095b4ff2b6607d096fa80163/jdk-8u131-linux-x64.tar.gz
export UNLIMITED_STRENGTH_URL=http://download.oracle.com/otn-pub/java/jce/8/jce_policy-8.zip

# Download Oracle Java 8 accepting the license
wget --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" \
${JDK_URL}
# Extract the archive
tar -xzvf jdk-*.tar.gz
# clean up the tar
rm -fr jdk-*.tar.gz
# mk the jvm dir
sudo mkdir -p /usr/lib/jvm
# move the server jre
sudo mv jdk1.8* /usr/lib/jvm/oracle_jdk8

# install unlimited strength policy
wget --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" \
${UNLIMITED_STRENGTH_URL}
unzip jce_policy-8.zip
mv UnlimitedJCEPolicyJDK8/local_policy.jar /usr/lib/jvm/oracle_jdk8/jre/lib/security/
mv UnlimitedJCEPolicyJDK8/US_export_policy.jar /usr/lib/jvm/oracle_jdk8/jre/lib/security/

sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/oracle_jdk8/jre/bin/java 2000
sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/oracle_jdk8/bin/javac 2000

sudo echo "export J2SDKDIR=/usr/lib/jvm/oracle_jdk8
export J2REDIR=/usr/lib/jvm/oracle_jdk8/jre
export PATH=$PATH:/usr/lib/jvm/oracle_jdk8/bin:/usr/lib/jvm/oracle_jdk8/db/bin:/usr/lib/jvm/oracle_jdk8/jre/bin
export JAVA_HOME=/usr/lib/jvm/oracle_jdk8
export DERBY_HOME=/usr/lib/jvm/oracle_jdk8/db" | sudo tee -a /etc/profile.d/oraclejdk.sh

And now I can do the following

fieldju@DESKTOP-LTL6MIC:~$ java -version
java version "1.8.0_112"
Java(TM) SE Runtime Environment (build 1.8.0_112-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.112-b15, mixed mode)                                                

The links and versions in the above script are likely to be out of date by the time you read this, so just head over to http://www.oracle.com/technetwork/java/javase/downloads/index.html accept the license so that their js lets you copy the new URLs and you should be good to go.

Answer 10

I used the script given by @fieldju but he missed some things that the script depends on, and also copy/pasting the contents results in having windows line endings/carriage returns (/r) which will need replacing to linux returns. Also, I found it a lot more straightforward to download the zips needed first and put them alongside the script. Here's a full list of what I did:

1. In bash, type sudo apt-get install zip unzip to make sure unzip/zip is installed on your bash console
2. Download the latest Linux version of the Java JDK from the oracle website (I have a 64 bit system so I chose "Linux x64") and save it in a folder somewhere on your computer that you can get to in bash NOTE: don't change the file name to ensure it works with the script
3. Download the unlimited strength policy seperately in the same folder as the last zip, again ensuring you keep the filename as-is.
4. Copy and paste the following script into notepad and save it as java_install_predownloaded.sh in the same folder alongside the zips:

Script:

#!/bin/bash

# Extract the archive
tar -xzvf jdk-*.tar.gz

# mk the jvm dir
sudo mkdir -p /usr/lib/jvm
# move the server jre
sudo mv jdk1.8* /usr/lib/jvm/oracle_jdk8

# install unlimited strength policy
mv UnlimitedJCEPolicyJDK8/local_policy.jar /usr/lib/jvm/oracle_jdk8/jre/lib/security/
mv UnlimitedJCEPolicyJDK8/US_export_policy.jar /usr/lib/jvm/oracle_jdk8/jre/lib/security/

sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/oracle_jdk8/jre/bin/java 2000
sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/oracle_jdk8/bin/javac 2000

sudo echo "export J2SDKDIR=/usr/lib/jvm/oracle_jdk8
export J2REDIR=/usr/lib/jvm/oracle_jdk8/jre
export PATH=$PATH:/usr/lib/jvm/oracle_jdk8/bin:/usr/lib/jvm/oracle_jdk8/db/bin:/usr/lib/jvm/oracle_jdk8/jre/bin
export JAVA_HOME=/usr/lib/jvm/oracle_jdk8
export DERBY_HOME=/usr/lib/jvm/oracle_jdk8/db" | sudo tee -a /etc/profile.d/oraclejdk.sh

This code is a modified version from @fieldju which assumes the zips are already downloaded and in the same folder as this .sh file

5. because the file has the windows carriage returns you need to ensure they are replaced, so in bash navigate to where you saved java_install_predownloaded.sh and run the following command:

   sed 's/^M$//' java_install_predownloaded.sh > java_install_predownloaded_unix.sh

I also then ran the following to ensure there are definitely no line endings from windows:

sed 's/\r$//' java_install_predownloaded_unix.sh > java_install_predownloaded_unix_final.sh

6. After running those 2 lines, a file called java_install_predownloaded_unix_final.sh will be in the folder which is our 'cleaned' version without the windows line endings, so you just need to execute ./java_install_predownloaded_unix_final.sh in bash and watch the magic happen. Hey Presto you now have java installed on your bash instance on windows!

Answer 11

it may work for Insider Preview build 14905, but hangs on Windows 10 Pro build 14393. A good part of the problem is that Microsoft is using Ubuntu 14.0.4. 14.10 or later would probably better support Java 8.

Answer 12

I'm confirming here that Oracle JDK Version 8u102, x64 for linux is installable ok on Windows 10 Insider Build 14905, released on 16th August 2016.

Downloadable from here after accepting license

C:\>systeminfo | findstr /B /C:"OS Name" /C:"OS Version"
OS Name:                   Microsoft Windows 10 Pro Insider Preview
OS Version:                10.0.14905 N/A Build 14905

I followed the instructions here: wikiHow Oracle Java Install

$ java -version
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)

$ javac -version
javac 1.8.0_102

I've not yet had a chance to really stress this install, but this is better than the previous hangs.

Answer 13

It seems that the problem occured with java oracle version, I have download the openJDK version and now it work

Answer 14

Seems installing JDK8 is not working at the moment on Build#14316 of WSL. But trying to install JDK7 worked fine for me. Exploring the limits of this installation at the moment and will keep posted. Idea came from here : https://github.com/Microsoft/BashOnWindows/issues/196