Apple Java For Mac

Java for Mac OS X 10.5 Update 10 delivers improved compatibility, security, and reliability by updating J2SE 5.0 to 1.5.030, and updating Java SE 6 to 1.6.026 for 64-bit capable Intel-based Macs.

• Latest Version:

  Java 2017-001 LATEST

• Requirements:

  Mac OS X 10.7 or later

• Author / Product:

  Apple Inc / Java for Mac

• Old Versions:

• Filename:

  javaforosx.dmg

• MD5 Checksum:

  5de80d78f6b500b9c92e4a0d74211efc

• Details:

  Java for Mac 2020 full offline installer setup for Mac

Because programmers can’t get enough caffeine

• Which Java You Got?
• Different Javas
• Install Jenv to manage multiple Versions of Java
• Update Java

There are several ways to install Java.This is a deep dive into the various editions to equip you to debug JVM installation issues.

Which Java You Got?

1. Open a Terminal session.

2. Shell scripts check if Java is available by:

   Alternately, the older form is:

   Either way, the response:

   PROTIP: File “java” in the above path is a binary file.

3. To see what Java VM you have already installed:

   PROTIP: -version is a non-standard parameter. Most other programs use either the -v flag or two-dash --version with the longer-form parameter name.

   A sample response:

4. List which versions are installed on your machine:

   PROTIP: On Macs, all known JVM’s are located at:
   /Library/Java/JavaVirtualMachines/

   NOTE: This directory is at the root for the whole machine, not a particular user’s home folder.

   The response on my machine:

5. PROTIP: The Java program looks for the $JAVA_HOME environment variable to obtain files:

   echo $JAVA_HOME

   Sample response:

   PROTIP: This command is my preferred way to see what a machine has becauseif you invoke java or javac, if it’s not installed, MacOS prompts you to install the JDK. Clever. But don’t do it if you want other version of Java.

   Java is used by Groovy, Grails, Spring Boot, and others.

6. PROTIP: Developers use the JDK rather than the JRE (Runtime Environment) in order to get the javac compiler. See what version of the Java Compiler is installed:

   A sample response:

7. Additional details are provided with this command:

   That’s a capital -V.

   The response on my machine:

   Alternately:

   Apple Java

   PROTIP: The version that comes installed on Apple Macs is obsolete and thus does not have the latest security patches. But do NOT delete the default version.

   But if you did uninstall it, to re-install Java 6 for OS X 2014-001,it can be obtained fromhttps://support.apple.com/kb/DL1572?locale=en_US

   Different Javas

   https://en.wikipedia.org/wiki/List_of_Java_virtual_machines lists all the known Java compilers.Several organizations work on OpenSDK specs from AdoptOpenJDK and certified for Java SE TCK compliance on x64 reference architecture systems

   • When Oracle acquired Sun, the jdk (Java Development Kit) was one of the products obtained. Versions are downloaded directly from Oracle from http://jdk.java.net.

   • https://adoptopenjdk.net/ has both 8, 11, and 13 running the tradition “HotSpot” JVM and the more recent and faster “OpenJ9” JVM. To install the latest (v13):

   • Azul Zuludownloads for macOS, from a company that also sells Java optimization products. Its zulu8.30.0.1-jdk8.0.172-macosx_x64 from zip April 18, 2018 is 179.2 MB expanded

   • IBM OpenJDK with Eclipse OpenJ9

   Latest Version of Oracle Java

8. PROTIP: Hold off downloading the java .dmg installer fileas described athttps://java.com/en/download/help/mac_install.xml

   WARNING: Oracle installs an annoying Ask Toolbar, without asking.

   Oracles docs on installing the JDK:
   https://docs.oracle.com/javase/8/docs/technotes/guides/install/mac_jdk.html

9. Use an internet browser to
   http://www.oracle.com/technetwork/java/javase/downloads/index.html

10. Click the “Download” button for the JDK (not the JRE).

    NOTE: Downloads of the JDK contains the JRE.

Install Jenv to manage multiple Versions of Java

PROTIP: If you’re a developer, you’ll likely need to manage different versions of Java needed by different apps. Much like NPM for Node and rbenv for Ruby.

http://hanxue-it.blogspot.com/2014/05/installing-java-8-managing-multiple.html?q=java
describes the steps.

1. Install Jenv by specifying the location URL: https://raw.githubusercontent.com/entrypass/jenv/homebrew/homebrew/jenv.rb

   brew install jenv

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   The response:

2. To see if jenv can run, list its version and commands:

   jenv

   The response is like this (at time of writing Oct 15, 2018):

3. See where it was installed:

   which jenv

   My response:

   NOTE: The file jenv is a binary executable.

4. Use Homebrew’s directories rather than ~/.jenv add to the bottom of your bash_profile file:

   export JENV_ROOT=/usr/local/var/jenv

5. To enable shims and autocompletion add to the botton of your bash_profile file:

   Jenv for several Java versions

6. Get info:

   Sample response:

7. List installers available for use by jenv:

   The response:

   If you don’t see any, you need to first download a JVM installer containing folders bin, lib, jre, include, bundle, db, man.

   The path to a particular version is constructed by adding “/Contents/Home” to the end of the path.

8. The point of jenv is to add additional versions, such as back version JDK 7.

   The response:

9. Add JDK 8:

   http://download.oracle.com/otn-pub/java/jdk/8u101-b13/jdk-8u162-macosx-x64.dmg

   The response:

   The above provide a handle for jenv provide other apps to use.

10. List the Java versions jenv knows about:

    jenv versions

    The response if none if brew cask was not installed:

11. To configure global version for all apps to use:

    Example response:

Open JDK

Open JDK is the open-sourced implementation of the JRE spec, athttp://openjdk.java.net

But some say it is not ready for “prime time” on MacOS because its installation is a dirty affair from 2013 when going from v6 to v7:

• https://wiki.openjdk.java.net/display/MacOSXPort/Mac+OS+X+Port+Project+Status

Open JDK’s install page at http://openjdk.java.net/install/shows apt-get (for Debian, Ubuntu) andyum (for Red Hat, CentOS, Oracle Linus, Fedora).

• http://blog.shelan.org/2015/03/how-to-build-open-jdk-9-on-mac-osx.htmlon Yosemite

• http://hanxue-it.blogspot.com/2014/05/installing-java-8-managing-multiple.html

For macOS, this page recommends using Make to compile from source.

1. Download source using Mercurial to a new folder “openjdk9”:

   hg clone http://hg.openjdk.java.net/jdk9/jdk9 openjdk9cd ./openjdk9

   Note JDK 9 is under active development.

   http://hg.openjdk.java.net/jdk8/jdk8 work stopped at 2014-03-04.

2. Install XQuartz for X Window System that runs on Macs:

   brew install Caskroom/cask/xquartz
   brew cask list

   NOTE: Downloaded /Library/Caches/Homebrew/xquartz-2.7.9.dmg was 7.9K

   xquartz staged at ‘/opt/homebrew-cask/Caskroom/xquartz/2.7.9’ (73M)

3. cd to the .tar.gz directory containing the configure file for Make to use.

4. XQuartz fixes an error in this command:

   bash ./configure

5. Install apple-gcc42 the Apple C compiler.

   Mihail recommends:

6. Install ccache (compiler cache):

   brew install ccache

7. Make a symlink /usr/bin/gcc -> /usr/local/Cellar/apple-gcc42/4.2.1-5666.3/bin/gcc-4.2 (same for g++)

Test JDK Build

https://mihail.stoynov.com/2015/01/29/building-openjdk-9-on-a-osx-or-any-linux/ shows JDK 9 install using ccache, mercurial (hg), jtreg “testing harness”, and Webrev to diff code

Update Java

https://java.com/en/download/help/mac_java_update.xml

NOTE: Others include cheatsheet, google-chrome, google-drive, google-hangouts, dropbox, etc.listed in Sourabh Bajaj’s venerableMac OSX Setup Guide, developed and distributed as aGitBook.

Maven (mvn)

1. Install using Homebrew:

2. See its metadata and what java version Maven is based on:

   If it’s installed, the sample response:

   PROTIP: Many have switched to using Gradle instead of Maven or Ant.

Kotlin

Kotlin is a language that makes use of the JVM.Invented by JetBrains (IntelliJ).

Social

Top Java Blogs/bloggers to follow on Twitter:

More on macOS

This is one of a series about macOS (previously Mac OSX):