How to put old Java (8 series) in macOS 10.15 Catalina
Introduction
Some tools don't work with Java version 12, and Google search for older Java didn't show useful information at the top, so I'll take a note here.
My environment
macOS 10.15 catalina Java is 12.0.2
% /usr/libexec/java_home
/Library/Java/JavaVirtualMachines/openjdk-12.0.2.jdk/Contents/Home
What you want to do
I want to install Java 8 series.
Old Java installation.
This was helpful.
--Procedures for installing Oracle Java 8 (JDK) on macOS
- https://weblabo.oscasierra.net/java-install-oracle-jdk8-macosx/
D / L the JDK from the Oracle site. "Java SE Development Kit 8u202"-"Mac OS X x64" was selected.
| https://www.oracle.com/technetwork/java/javase/downloads/java-archive-javase8-2177648.html |
|---|
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Make sure that JavaVirtualMachines has 8 series installed.
% /usr/libexec/java_home
/Library/Java/JavaVirtualMachines/openjdk-12.0.2.jdk/Contents/Home
% /usr/libexec/java_home -v 1.8
/Library/Java/JavaVirtualMachines/jdk1.8.0_202.jdk/Contents/Home
There is 1.8, but since it is newly added, it is only this, so it is probably 8 series. (suitable
Switch to old Java
You can't just install it, you need to switch JAVA_HOME.
I referred to here.
--Switch Java version on OS X
- https://qiita.com/ringo/items/db58b34dc02a941b297f
Put the following two lines in your shell settings, such as .profile or .bashrc.
export JAVA_HOME=$(/System/Library/Frameworks/JavaVM.framework/Versions/A/Commands/java_home -v "1.8")
PATH=${JAVA_HOME}/bin:${PATH}
Version confirmation
% source ~/.profile
% java -version
java version "1.8.0_202"
Java(TM) SE Runtime Environment (build 1.8.0_202-b08)
Java HotSpot(TM) 64-Bit Server VM (build 25.202-b08, mixed mode)
Finally
Even if you search Google by mixing various words centering on "install macOS old Java", it is painful because only the method of ** uninstalling ** old Java appears. .. Sometimes The way to install Java that you can find is no good now.
I melted a good amount of time. I hope that someone who seems to be addicted to it will be saved. ..
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