[JAVA] Install openjdk11 on mac


openJDK11 has been released. I hurriedly installed it on my mac, so I will summarize the procedure.


1. Download openJDK

Download openJDK for MacOS from the following URL. http://jdk.java.net/11/

I downloaded it from the link in the red frame below. スクリーンショット 2018-09-26 23.22.08.png

2. Extract the download file

Extract the downloaded tar.gz.

$ tar xvzf openjdk-11+28_osx-x64_bin.tar.gz

3. Move the extraction folder

Move the extracted and created folder under "/ Library / Java / JavaVirtualMachines /".

$ sudo mv jdk-11.jdk /Library/Java/JavaVirtualMachines/

4. Confirm with Java_home command

Check if it is recognized by the Java_home command.

$ /usr/libexec/java_home  -V
Matching Java Virtual Machines (3):
    11, x86_64:	"OpenJDK 11"	/Library/Java/JavaVirtualMachines/jdk-11.jdk/Contents/Home
    1.6.0_65-b14-468, x86_64:	"Java SE 6"	/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home

Confirm that "OpenJDK 11" is displayed.

5. Register in environment variable

Register in the environment variable.

export JAVA_HOME=`/usr/libexec/java_home -v 11`

6. Version check

Check the version, and if openJDK is specified, you're done.

$ java -version
openjdk version "11" 2018-09-25
OpenJDK Runtime Environment 18.9 (build 11+28)
OpenJDK 64-Bit Server VM 18.9 (build 11+28, mixed mode)

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