How to install Java 8 on Mac

最新推荐文章于 2025-06-03 17:22:53 发布

wangbingfeng0

最新推荐文章于 2025-06-03 17:22:53 发布

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分类专栏： Thinking in Java

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本文指导如何使用Homebrew在Mac上正确安装Java，包括最新版OpenJDK及特定版本如Java 8，并介绍如何利用jenv进行多版本Java的高效管理，适合开发者参考。

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Don't rely on Oracle to install Java properly on your Mac.

Use Homebrew. this will install the latest jdk:

brew cask install java

in my case, jdk is openjdk 11.

If you want to manage multiple versions of Java on your Mac, consider using jenv.

UPDATE: Now that Java 8 is no longer the most current version, if you want java 8 install it this way:

brew tap caskroom/versions
brew cask install java8

To get a list of all older versions of java: brew tap caskroom/versions and then use brew search java.

We use brew cask since we'd otherwise use the Oracle GUI installer that will likely not install Java properly on your Mac. (Use brew cask install APP to install GUI apps; use brew install APP.) Java is not a GUI app; It should not require "cask" but at least Oracle is consistent.

If you want to install jdk7, you need to download jdk on oracle website(requires a login). Then install it.

mac default install jdk7 to /Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk

jEnv is a command line tool to help you forget how to set the JAVA_HOME environment variable.

Linux / OS X

$ git clone https://github.com/gcuisinier/jenv.git ~/.jenv

Mac OS X via Homebrew

$ brew install jenv

Installation

Bash

$ echo 'export PATH="$HOME/.jenv/bin:$PATH"' >> ~/.bash_profile
$ echo 'eval "$(jenv init -)"' >> ~/.bash_profile

Zsh

$ echo 'export PATH="$HOME/.jenv/bin:$PATH"' >> ~/.zshrc
$ echo 'eval "$(jenv init -)"' >> ~/.zshrc

Configure

$ jenv add /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
  oracle64-1.6.0.39 added
$ jenv add /Library/Java/JavaVirtualMachines/jdk17011.jdk/Contents/Home
  oracle64-1.7.0.11 added

And Use !

List managed JDKs

$ jenv versions
  system
  oracle64-1.6.0.39
* oracle64-1.7.0.11 (set by /Users/hikage/.jenv/version)

Configure global version

$ jenv global oracle64-1.6.0.39

Configure local version (per directory)

$ jenv local oracle64-1.6.0.39

Configure shell instance version

$ jenv shell oracle64-1.6.0.39

view JAVA_HOME

$ jenv exec bash
bash-3.2$ echo $JAVA_HOME

ps: when install Java, do not use a proxy, because the download speed is faster and do success.

reference address:

1. https://stackoverflow.com/questions/24342886/how-to-install-java-8-on-mac

2. http://www.jenv.be/

3. http://davidcai.github.io/blog/posts/install-multiple-jdk-on-mac/

4. https://github.com/gcuisinier/jenv/issues/44

5. https://github.com/jenv/jenv/wiki/Available-commands