If output contains+shows : '/Library/Java/JavaVirtualMachines/jdk-*.jdk/Contents/Home', where * will actually show the Java version number, then its good.

open Terminal, run this command: /usr/libexec/java_home.

MacOS will ask again to enter a privileged accnt Password, do that to complete the move.

copy that newly extracted/decompressed OpenJDK folder 'jdk*.jdk', & goto below destination folder & MOVE (to move use the 'alt/option' button to change the 'paste' mode into 'move' mode) the 'jdk*.jdk' folder inside below destination location:.

Open your 'System-Preferences' > 'Security & Privacy' > under 'General' tab > goto bottomside section 'Allow Apps Downloaded From' > press the 'Allow' or 'Open anyway' button there to allow the decompression of 'openjdk*.tar.gz' archive-file (macOS will ask to enter Password of a privileged Admin type account), then it should decompress, if it does not decompress then again double tap on the 'openjdk*.tar.gz' file in Finder, & choose 'Open'/'Allow' button if macOS asks you again, then it will finally decompress that '*.tar.gz' file, & extract a folder from it,.

double-click on 'openjdk*.tar.gz' (to decompress it) in Finder, MacOS may show notice & stop that,.

Then verify/compare downloaded file's authenticity/integrity : you may use hash/digest SHA256 code shown on openjdk site, Use openssl tool in Terminal utility : with such command: openssl sha256 & then drag the openjdk*.tar.gz file from Finder into that openssl command-line in Terminal, press enter to compute hash/digest, then Compare computed SHA256 digest-code with sha256 what is shown on secure webpage, both must match/same,

in macOS-X Catalina (or macOS-XI/11/X1 after it), obtain the 'openjdk*.tar.gz' archive-file (not dmg/zip) from or its archive-page, (make sure you see 'http s' (or Locked-Lock-symbol) in web-browser when you download).

Oracle Java (JDK) (includes JRE) has OpenJDK & closed-source/proprietary components, & it is free only-for Personal usage, a paid License required for any Commercial usage & for any deployment/distribution, & all users also must do a (free) web-registration to download any binary/source. OpenJDK Java (includes JRE) is open-source, & it is FREE for any Commercial & any deployment/distribution & any Personal usage.

Openjdk 11 mac