It seems that Oracle Java has become commercialized for commercial use, and it was troublesome to install it with the GUI, so I thought that I would like to be able to manage Java version with CLI like
Is there a Java version control tool like
There was something called
However, it seems that Java itself needs to be installed by itself, and
jenv seems to be positioned as a version switching tool.
I like being able to install and switch versions like
I found SDKMAN when I searched for something that can be installed and switched versions. I installed it referring to the following. #Java: vol1: [java/JDK version management best practices]
By the way, I tried to install Java 8 of AdoptOpenJDK this time, but there are two in
% sdk list java
It seems that the JVM is different when I look it up. Download and install AdoptOpenJDK
j9 = OpenJ9
Eclipse OpenJ9 is a JVM from the Eclipse community. An enterprise-class JVM designed for low memory usage and fast startup, used in IBM’s JDK.
hs = HotSpot
HotSpot is a JVM from the OpenJDK community. It is currently the most widely used JVM and is used by Oracle’s JDK.
It seems to mean that, so this time I safely tried to use the same
hs as the conventional Oracle.
(I think OpenJ9 is for enterprises and has high functionality. Should I use this in the future?)
Uninstall Oracle Java
I think I could refer to this. .. .. (faint memory) How to uninstall Java on Mac
After uninstalling Oracle Java, the example dialog is displayed!
To use the ““java” command line tool every time you start IntelliJ IDEA, you need to have the JDK installed. A dialog like
has been displayed by sdkman` even after Java installation.
As a workaround,
File >Invalidate Caches / Restart no longer displays the dialog.
JDKs installed with SDKMAN are not selectable in the IntelliJ IDE
% java -version openjdk version "1.8.0_252" OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_252-b09) OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.252-b09, mixed mode)
Also, I was able to run a traditional Java project in IntelliJ IDEA. It seems to be okay for the time being.
If you think that you have migrated your Android development environment as well, it seems that Android Studio includes a JDK. What is this guy really? I would like to think about Android when it is needed again.
/Applications/Android\ Studio.app/Contents/jre/jdk/Contents/Home/bin/java -version openjdk version "1.8.0_242-release" OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593) OpenJDK 64-Bit Server VM (build 25.242-b3-6222593, mixed mode)