How to install java jdk 7 on Snow Leopard

Question

My Mac currently is running Snow Leopard (10.6.8), and I would like to develop with Java 7. I downloaded the Java 7 OS X installer from Oracle\'s website, started to run it.

Answer 1

I was able to compile openJDK 7 for snow leopard (works entirely, AWT included), from some patches at this project:
https://github.com/hgomez/obuildfactory/

If you want my binaries for a little bit of an easier time, here they are:
https://bintray.com/wyatt8740/generic/openjdk7-sdk-osx-10.6/20140622/view

The tarball is about 57 megabytes.

Extract it under /Library/Java/JavaVirtualMachines/. The JDK will be in a directory called jdk1.7.0.jdk. Set your JAVA_HOME environment variable to /Library/Java/JavaVirtualMachines/jdk1.7.0.jdk/Contents/Home, and from then put the command for setting JAVA_HOME in your ~/.profile to make it more permanent. Log out and in for it to take full effect. The only thing missing so far is a JDK 7 browser plugin.

You can also use the "Java preferences' app (can be found in spotlight search) to set it to the default when accessed via GUI as well.

Unfortunately, I don't have access to OS X at the moment to try to make java 1.8 work, so 1.7 is probably the end of the road for 10.6.

Answer 2

What you want is not impossible but for sure NOT recommended but... once you are sure that this is what you want, here is an easy way to install Java (or any software for OS related matters): - navigate to you MainHD/System/Library/CoreServices/SystemVersion.plist - backup this file !! - open it in Text editor and alter the product version:

    <key>ProductUserVisibleVersion</key>
<string>10.6.8</string>
<key>ProductVersion</key>
<string>10.6.8</string>

according to you needs.

Warning: A samurai take 7 breaths before taken any decision.

Answer 3

There are two ways to do this.

1. Download Pacifist from charlessoft.com and open the JDK PKG in it (and extract the application.)
2. Open the PKG in PackageMaker (a tool for developers) and remove the requirement of 10.7.3.

Good luck!

Answer 4

Use Pacifist from http://www.charlessoft.com/ to open and install the 'JDK 7 Update X.pkg' in the 'jdk7-7uX-macosx-x64.dmg' file you download from http://www.oracle.com/technetwork/java/javase/downloads/index.html

Answer 5

You can build your own one. I did this before. It was easy. And it's as official as you can probably get:

https://wikis.oracle.com/display/OpenJDK/Mac+OS+X+Port

Answer 6

From what I have read JDK 7 does not require 10.7+ so I simply opened the shipped .pkg installer file with PackageMaker (an Xcode tool) and removed the OS version requirement and re-built it.

You will need to copy the installer out of the .dmg file since you have to save changes.
Edit: You will need to Build to another directory as the mounted .dmg is read-only.

So far in my using this I haven't experienced any issues, even the Java preference pane is working properly.

One thing to note, you will have to reorder JDKs in Java Preferences.app to get programs to use the new JDK instead of Java 6.

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I've even gone as far as to copy the Java 7 .jdk bundle into /System/Library/Java/JavaVirtualMachines/, and it seems to be function normally.

Just don't move/rename the JDK bundles while Java applications are running; not that I've done that by accident or anything...