Ubuntu – I want to install oracle-java8 on Linux but Ubuntu says: already the newest version

aptjavaoraclepackage-managementupdates

I was following sudo apt-get update to add the java 8 repo to apt-get

$ sudo add-apt-repository ppa:webupd8team/java

Again update the apt-get repo

$ sudo apt-get update

Finally install java 8

$ sudo apt-get install oracle-java8-installer

but I had a lot of errors, so I fixed and reinstalled them, but now it shows this image:

screenshot from running apt

ho@jhost:~$ sudo apt-get install oracle-java8-installer
Reading package lists... Done
Building dependency tree
Reading state information... Done
oracle-java8-installer is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

so I want to know java version is 8

ho@jhost:~$ java -version
java version "1.5.0"
gij (GNU libgcj) version 4.8.4
Copyright (C) 2007 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE

I need a solution to install oracle-java8

Best Answer

You can select the system wide java default executable via update-alternatives. Run the update-alternatives command with --list option to see the currently installed alternatives:

$ update-alternatives --list java
/usr/lib/jvm/java-11-openjdk-amd64/bin/java
...

Than change the default to your required java version with:

$ sudo update-alternatives --config java

and follow the instruction on the screen.