Difference between revisions of "Oracle Java for Linux"

Revision as of 09:22, 4 August 2018

JRE

JRE on 32-bit and 64-bit Debian / Ubuntu / Mint Linux operating systems.

End users looking for java to run software are looking for JRE. OpenJRE / OpenJDK is an alternative to Oracle Java that is the default on packaged linux systems such as Ubuntu / Kbuntu / Mint.

Are you 32 or 64 bit? Type:

uname -m

Have you downloaded Oracle Java? as of TOR you could find it [ here ] and the file you need is/was called [ jre-8u181-linux-x64.tar.gz ]

note: jre-8u181-linux-x64.tar.gz for 64 bit, jre-8u181-linux-i586.tar.gz 32 bit, and adjust the version number or build number for what is current at the time you are reading this. (as of 2018 there is a jre 10, however, many software recommends jre 8). Companies like Oracle tend to move things around on their website unnecessarily often, so more than a week after TOR that link is probably defunct.

Adjust any version numbers to accommodate your system, otherwise instructions assume currents as of TOR: typically OpenJDK version 7. To REMOVE OpenJDK and install Oracle Java JRE do the following.

1. remove OpenJDK

sudo apt-get autoremove openjdk-7-jre

2. confirm complete removal (other instructions online do not accomplish this ie WikiHow)

sudo java -version

You should see the error: No such file or directory <- that is good!

3. make a home

sudo mkdir /usr/local/java

4. have the oracle installation file ready in the path /usr/local/java

5. set permissions

sudo chmod a+x jre-8u181-linux-x64.tar.gz

6. decompress archive

sudo tar xzvf jre-8u181-linux-x64.tar.gz

7. as an alternative to setting a bunch of path env variables, just use a symlink

sudo ln -s /usr/local/java/jre1.8.0_181/bin/java /usr/bin/java

other guides

Here are some other installation guides that differ however accomplish the same task

• https://www.wikihow.com/Install-Oracle-Java-JRE-on-Ubuntu-Linux
• https://help.ubuntu.com/community/Java