How can I tell what version of Java I have installed? - Ask Ubuntu
I'm not sure which version of java I have, and would like to know if there is a command to see the version of java that is installed and active. Also, which version works best? All this on 32bit …
openjdk - Switch between multiple java versions - Ask Ubuntu
Mar 1, 2016 · Apt-get won't overwrite the existing java versions. To switch between installed java versions, use the update-java-alternatives command. List all java versions: update-java …
How to set default Java version? - Ask Ubuntu
Apr 13, 2012 · I actually have version 6.22 of java and would like to update to version 6.30. So after moving the extracted directory java-6-oracle into /usr/lib/jvm I do not know what to do, …
jdk - Check java version without java -version - Ask Ubuntu
Apr 13, 2018 · I have about 35 different JREs installed in various nonstandard paths on a Linux server, but I cannot execute java -version as they are owned by other users. I also cannot run …
openjdk - How to find path to java? - Ask Ubuntu
May 14, 2016 · PPAs such as 'ppa:webupd8team/java' used in many Java installation tutorials now become unavailable. Here I would like to share how I installed Java 8 on Ubuntu 16.04, and …
Check if active java version is open-jdk or oracle - Ask Ubuntu
Sep 24, 2016 · You can write a simple bash script to check this out: Open any text editor (preferrably vim or emacs). create a file named script.sh (or any name with the .sh extension). …
how do I find openjdk-11 that I just installed? - Ask Ubuntu
May 7, 2021 · Since you have previously checked with whereis whether your binary is installed, now you can check if it can be executed properly : does its location belong to your PATH …
windows subsystem for linux - Command 'java' not found on WSL, …
Jan 10, 2022 · When you called java from Windows, it was smart enough to add the .exe, and run the Windows copy of Java. But, when you switched to WSL, when you typed java, it ran the …
update-java-alternatives vs update-alternatives --config java
However, using update-java-alternatives with a JDK Version changes both programs for me. Using the first commands, you can use a Java VM and Java Compiler from different JDKs. update …
neo4j - How can I check which JRE version I have? - Ask Ubuntu
Feb 17, 2016 · Should I remove the old java? I don't want it to interfere with the new one, and the system is low on memory. Will it have any effect on the Ubuntu if I remove it?
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