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My purpose is to use jarsigner to sign apk.

I get the following prompt：

% jarsigner     
The operation couldn’t be completed. Unable to locate a Java Runtime that supports jarsigner.
Please visit http://www.java.com for information on installing Java.

my java version hint：

% java -version
java version "1.8.0_321"
Java(TM) SE Runtime Environment (build 1.8.0_321-b07)
Java HotSpot(TM) 64-Bit Server VM (build 25.321-b07, mixed mode)

Mac version is 11.6.3

How can I solve this problem please?

gaohomway
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3 Answers3

52

Mac users, follow the below steps:

  1. brew install openjdk@11
  2. For the system Java wrappers to find this JDK, symlink it with: 
    sudo ln -sfn $(brew --prefix)/opt/openjdk@11/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk-11.jdk

Reference: https://formulae.brew.sh/formula/openjdk@11

This approach will also work for other versions.

Marceli Wac
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Polo
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  • You shouldn't need to symlink. Most programs respect `JAVA_HOME` env-var – OneCricketeer Sep 23 '22 at 02:00
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    It's an alternate way to point Java to correct JDK. For me, first time setup with brew required me to execute symlink. Second scenario, in case you have multiple Java JDK, symlink to switch to correct JDK also works. – Polo Oct 01 '22 at 18:44
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    symlink command needed in MacOS – Shihab Uddin Apr 12 '23 at 08:17
16

I finally solved it by downloading the JDK

gaohomway
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    I used this link to avoid having to create an account with oracle but this worked for me too. https://www.oracle.com/java/technologies/downloads/#jdk18-mac – DrRaspberry May 12 '22 at 18:32
  • Do I need to do something more to make it work? I have installed it but it doesn't work? Should I deactivate the virtual environment? Thanks – R__ Jan 24 '23 at 18:40
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You need to check jdk version which installed to our system. This example is for mac os with m1.

Enter in your terminal:

java -version

Output:

openjdk version "1.8.0_372"
OpenJDK Runtime Environment (Zulu 8.70.0.23-CA-macos-aarch64) (build 1.8.0_372-b07)
OpenJDK 64-Bit Server VM (Zulu 8.70.0.23-CA-macos-aarch64) (build 25.372-b07, mixed mode)

Then input the commands:

  1. sudo ln -sfn /opt/homebrew/opt/openjdk/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk

  2. echo 'export PATH="/opt/homebrew/opt/openjdk/bin:$PATH"' >> ~/.zshrc or ~/.bashrc

  3. export CPPFLAGS="-I/opt/homebrew/opt/openjdk/include"

It worked for me

Aleksandr Galko
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