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How to install the JDK on Ubuntu Linux


Question

I am trying to install the Java Development Kit (JDK) on Ubuntu Linux distribution, but I am unable to install it.

What are the steps to install it on Ubuntu?

2018/03/26
1
555
3/26/2018 2:57:52 AM

Accepted Answer

Referring to Ask Ubuntu question How to set JAVA_HOME for OpenJDK?,

How to install Open JDK (Java developement kit) in Ubuntu (Linux)?

  1. Open Terminal from Application Dash or press Ctrl+Alt+T

  2. Update repository:

    sudo add-apt-repository ppa:openjdk-r/ppa  # only Ubuntu 17.4 and earlier
    sudo apt update
    
  3. Optional: To search available distributions of openjdk, use the following command:

    apt search openjdk
    
  4. Install the appropriate version with the following command:

    sudo apt install openjdk-8-jdk
    sudo apt install openjdk-8-source #this is optional, the jdk source code
    
  5. For JAVA_HOME (Environment Variable) type command as shown below, in "Terminal" using your installation path...

    export JAVA_HOME=/usr/lib/jvm/java-8-openjdk
    

    (Note: /usr/lib/jvm/java-8-openjdk is symbolically used here just for demostration. You should use your path as per your installation.)

  6. For PATH (Environment Variable) type command as shown below, in Terminal:

    export PATH=$PATH:$JAVA_HOME/bin

  7. To check your installation:

    java -version

2019/02/07
797
2/7/2019 6:11:01 PM

The following used to work before the Oracle Java license changes in early 2019.

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer

The PPA is discontinued, until the author finds a workaround for the license issues.

2019/09/27

You can install Oracle's JDK 1.7 fairly easily too; as an example this is how to install JDK 1.7.0_13;

As root, do;

cd /usr/local
tar xzf <the file you just downloaded>

As your normal user, add or change these two lines in your ~/.profile to point to the installation;

export JAVA_HOME=/usr/local/jdk1.7.0_13
export PATH=$PATH:$JAVA_HOME/bin

If it's an update, you may also want to remove the old java installation directory in /usr/local.

Log out and in again (or do . ~/.profile), and everything should just work.

The downside with Oracle's JDK is that it won't update with the rest of your system like OpenJDK will, so I'd mostly consider it if you're running programs that require it.

2017/01/20

In case you have already downloaded the ZIP file follow these steps.

Run the following command to unzip your file.

tar -xvf ~/Downloads/jdk-7u3-linux-i586.tar.gz
sudo mkdir -p /usr/lib/jvm/jdk1.7.0
sudo mv jdk1.7.0_03/* /usr/lib/jvm/jdk1.7.0/
sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.7.0/bin/java" 1
sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.7.0/bin/javac" 1
sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/lib/jvm/jdk1.7.0/bin/javaws" 1

After installation is complete, set environment variables as follows.

Edit the system path in file /etc/profile:

sudo gedit /etc/profile

Add the following lines at the end.

JAVA_HOME=/usr/lib/jvm/jdk1.7.0
PATH=$PATH:$HOME/bin:$JAVA_HOME/bin
export JAVA_HOME
export PATH

Source: http://javaandme.com/

2017/10/30

If you want to install the latest JDK 1.8, use the webupd8team PPA.

Add the repository in your system:

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

You can now install Oracle Java 8 using the following command:

sudo apt-get install oracle-java8-installer

This ppa repository also provides a package to set environment variables automatically. Just type:

sudo apt-get install oracle-java8-set-default
2018/03/22

OpenJDK is OK for the most cases, but Oracle JDK can be required for some bank client applications (my case) - I can't use OpenJDK.

I'm surprised that I don't see any answer with the default method (repository without external PPAs) in Ubuntu 12.10+ for Oracle's JDK - I will try to describe it.

  • Install JavaPackage: sudo apt-get install java-package
  • Download Oracle JDK from Oracle downloads page
  • Make a Debian package from the downloaded .tar.gz archive: make-jpkg jdk-YOUR_VERSION-linux-PLATFORM.tar.gz This command will produce a .deb package.
  • Install the package in your favourite way (for example, sudo dpkg -i oracle-java8-jdk_8u40_amd64.deb)

It's the officially supported way from Debian developers for installing Oracle JDK, and I suppose it's very simple.

2018/03/22