How to install JDK8 on Ubuntu 16?

Question

I needed JDK 8 for Bazel. I ran sudo apt-get install openjdk-8* on a freshly built Ubuntu 16.04.02 machine, but after installation update-alternatives --config java show two paths:

/usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java
/usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java

I purged opensdk-8* and then installed apt-get openjdk-9* but the outcome was the same.

How do I get JDK 8?

Answer 1

Usually you install the openjdk like this:

sudo apt-get install openjdk-8-jdk

Maybe this is the problem. You can look this up at http://openjdk.java.net/install/index.html. If you do this you might have fixed this problem. But cant imagine why your command give this result.

Answer 2

I installed oracle-jdk8. If you need,

sudo add-apt-repository ppa:webupd8team/java && sudo apt update
sudo apt install oracle-java8-installer

Answer 3

You can install openJDK with below command -

sudo apt-get install openjdk-8-jdk

OR You can also look at option to install Oracle Java 8. Detailed instructions are updated in the blog here. You can also use below commands for a quick answer -

sudo add-apt-repository ppa:webupd8team/java

sudo apt-get update

sudo apt install oracle-java8-set-default

javac -version

Answer 4

You can simply follow below steps

1. Download JDK 1.8 from https://repo.huaweicloud.com/java/jdk/8u202-b08/jdk-8u202-linux-x64.tar.gz

2. Extract it using tar -xvzf ~/Downloads/jdk-8u202-linux-x64.tar.gz ~/JDK-1.8

3. set JAVA_HOME using command export JAVA_HOME=~/JDK-1.8

4. set PATH using command export PATH=~/JDK-1.8/bin:$PATH

Use below URL for more details https://www.vultr.com/docs/how-to-manually-install-java-8-on-ubuntu-16-04/